Scott A Boardsen

Scott A Boardsen

  • RESEARCH SCIENTIST
  • 301.286.0837
  • NASA/GSFC
  • Mail Code: 674
  • Greenbelt , MD 20771
  • Employer: UNIVERSITY OF MARYLAND BALTIMORE COUNTY
  • Brief Bio

    Dr Boardsen studies plasma waves, plasma structures, and their interaction with particles in planetary magnetospheres. He has worked at GSFC since 1993. He received his PhD in physics from the University of Iowa in 1988.

    He is currently working on RBSP (Van Allen Probes), C/NOFS, and MESSENGER missions. He also works with the SPDF. His current research topics are 1) coherent ~1 Hz waves found in Mercury's inner magnetosphere, 2) the characterizing the fine frequency structure and surveying of the fast mode between the proton and lower hybrid frequencies observed by RBSP, 3) relationship between waves observed by C/NOFS and RBSP and 4) plasma wave ray-tracing and path integrated gain analysis of waves in the planetary magnetospheres. He is working on improving the accessibility of data by the science community available from the SPDF.

    One topic he focused on was the warm plasma ray-tracing of the ion-Bernstein mode in Mercury's inner (< 2 Mercury radii) magnetosphere in an environment that has large planetary proton loss cone distributions. He showed that the ~1 Hz harmonic waves observed in Mercury's inner magnetosphere are highly unstable to these proton loss cone distributions. He discovered that, through propagation, these waves can become highly compressional in ~0.1 proton beta environment, that an environment of ~2 proton beta is not needed for these waves to become highly compressional. He found the this mode cycles back and forth across the magnetic equator. For 1/2 of each cycle the waves experience strong growth with moderate compression and on the other 1/2 these waves experience strong compression with small growth or damping. Two types of propagation cycles where observed: 1) one where compression maximizes at the magnetic equator, and 2) the other where the compression maximizes off the magnetic equator. During the compression the group velocity drops and the wave energy piles up. He suggested that the later cycle explains why the compression is sometimes observed to maximize (straddle) off the magnetic equator. A dynamic spectrogram is shown along with the ray-tracing of the compression maximizing off (straddles) the magnetic equator. He reconciled the frequency shift between the observed and linear growth rate derived frequencies by proposing that the waves are anti-aligned with the bulk plasma flow velocity creating a Doppler shift, and showed that with this alignment the waves experience maximum growth while inside the magnetosphere.

    Publications

    Refereed

    Schriver, D., P. M. Travnicek, B. J. Anderson, et al. M. Ashour-Abdalla, D. N. Baker, S. A. Boardsen, P. Hellinger, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, R. L. Richard, J. A. Slavin, S. C. Solomon, R. D. Starr, and T. Zurbuchen. 2013. "What Happened to the High-Energy (> 100 keV) Particles at Mercury?" AGU Fall Meeting Abstracts,

    DiBraccio, G. A., J. A. Slavin, S. A. Boardsen, et al. B. J. Anderson, H. Korth, T. Zurbuchen, J. M. Raines, D. N. Baker, R. L. McNutt, and S. C. Solomon. 2013. "MESSENGER Observations of Magnetopause Reconnection at Mercury (Invited)." AGU Fall Meeting Abstracts, A3-:

    DiBraccio, G. A., J. A. Slavin, S. M. Imber, et al. D. J. Gershman, J. M. Raines, S. A. Boardsen, B. J. Anderson, H. Korth, T. Zurbuchen, R. L. McNutt, and S. C. Solomon. 2013. "MESSENGER Observations of Plasmoid-type Flux Ropes in Mercury's Magnetotail." AGU Fall Meeting Abstracts, -:

    Imber, S. M., J. A. Slavin, S. A. Boardsen, et al. B. J. Anderson, H. Korth, D. N. Baker, R. L. McNutt, and S. C. Solomon. 2013. "MESSENGER observations of dayside flux transfer events: Do they drive Mercury's substorm cycle? (Invited)." AGU Fall Meeting Abstracts, 7-:

    Wang, Y., D. G. Sibeck, J. Merka, et al. S. A. Boardsen, H. Arimabadi, T. B. Sipes, J. Safrankova, K. Jelinek, and R. Lin. 2013. "A new three-dimensional magnetopause model with a support vector egression machine and a large database of multiple spacecraft bservations." Journal of Geophysical Research (Space Physics), 118: 2173-2184 [10.1002/jgra.50226]

    Lee, K., E. Kim, S. A. Boardsen, et al. J. Johnson, D. Lee, and J. A. Slavin. 2013. "ULF wave modeling in Mercury's magnetosphere: Field-line resonance structures at Mercury." AGU Fall Meeting Abstracts, A2165-:

    DiBraccio, G. A., J. A. Slavin, S. A. Boardsen, et al. B. J. Anderson, H. Korth, T. H. Zurbuchen, J. M. Raines, R. L. McNutt, and S. C. Solomon. 2012. "MESSENGER observations of magnetopause structure at Mercury." EGU General Assembly Conference Abstracts, 14: 6363-.

    Sundberg, T., J. A. Slavin, S. A. Boardsen, et al. B. J. Anderson, H. Korth, J. M. Raines, T. H. Zurbuchen, G. A. DiBraccio, G. Gloeckler, G. C. Ho, M. Sarantos, S. M. Krimigis, R. L. McNutt, D. N. Baker, and S. C. Solomon. 2012. "MESSENGER observations of dipolarization events in Mercury's magnetotail." EGU General Assembly Conference Abstracts, 14: 3168-.

    Slavin, J. A., S. M. Imber, G. A. DiBraccio, et al. T. Sundberg, S. A. Boardsen, B. J. Anderson, H. Korth, D. N. Baker, R. L. McNutt, and S. C. Solomon. 2012. "MESSENGER Observations of Magnetotail Dynamics at Mercury." EGU General Assembly Conference Abstracts, 14: 3817-.

    Slavin, J. A., G. A. DiBraccio, J. M. Raines, et al. T. H. Zurbuchen, G. Gloeckler, S. A. Boardsen, M. Sarantos, T. Sundberg, B. J. Anderson, H. Korth, G. C. Ho, S. M. Krimigis, R. L. McNutt, D. N. Baker, and S. C. Solomon. 2012. "MESSENGER Observations of Magnetopause Reconnection and Its Effects on Mercury's Magnetosphere." EGU General Assembly Conference Abstracts, 14: 3813-.

    Boardsen, S. A., B. J. Anderson, J. A. Slavin, et al. J. M. Raines, H. Korth, D. Schriver, and S. C. Solomon. 2012. "Coherent ULF waves in Mercury's nightside magnetosphere: Their source and impact." EGU General Assembly Conference Abstracts, 14: 3194-.

    Collinson, G. A., D. G. Sibeck, A. Masters, et al. N. Shane, J. A. Slavin, A. J. Coates, T. L. Zhang, M. Sarantos, S. Boardsen, T. E. Moore, and S. Barabash. 2012. "Hot flow anomalies at Venus." JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 117: [10.1029/2011JA017277]

    Uritsky, V. M., J. A. Slavin, G. V. Khazanov, et al. E. F. Donovan, S. A. Boardsen, B. J. Anderson, and H. Korth. 2011. "Kinetic-scale magnetic turbulence and finite Larmor radius effects at Mercury." Journal of Geophysical Research (Space Physics), 116: [9236-10.1029/2011JA016744]

    Uritsky, V. M., J. A. Slavin, G. V. Khazanov, et al. E. Donovan, S. A. Boardsen, B. J. Anderson, and H. Korth. 2011. "Kinetic-Scale Magnetic Fluctuations in the Near-Mercury Space Environment." AGU Fall Meeting Abstracts, A2054-:

    Collinson, G. A., D. G. Sibeck, A. Masters, et al. N. Shane, J. A. Slavin, A. J. Coates, T. Zhang, S. A. Boardsen, T. E. Moore, and S. Barabash. 2011. "Hot Flow Anomalies at Venus." AGU Fall Meeting Abstracts, A1995-:

    Slavin, J. A., S. M. Imber, S. A. Boardsen, et al. B. J. Anderson, H. Korth, T. Zurbuchen, J. M. Raines, D. N. Baker, D. Schriver, and S. C. Solomon. 2011. "MESSENGER Observations of Flux Transfer Events at Mercury." AGU Fall Meeting Abstracts, A6-:

    Schriver, D., P. M. Travnicek, B. J. Anderson, et al. M. Ashour-Abdalla, D. N. Baker, S. A. Boardsen, R. E. Gold, P. Hellinger, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, R. L. Richard, J. A. Slavin, S. C. Solomon, R. D. Starr, and T. Zurbuchen. 2011. "MESSENGER Observations and Kinetic Simulations of Quasi-Trapped Ion and Electron Populations at Mercury." AGU Fall Meeting Abstracts, A10-:

    Sundberg, T., S. A. Boardsen, J. A. Slavin, et al. B. J. Anderson, H. Korth, T. Zurbuchen, J. M. Raines, and S. C. Solomon. 2011. "MESSENGER observations of Kelvin-Helmholtz waves at Mercury's magnetopause." AGU Fall Meeting Abstracts, A1604-:

    Boardsen, S. A., B. J. Anderson, J. A. Slavin, et al. H. Korth, D. Schriver, and S. C. Solomon. 2011. "Distribution of ~1 Hz ULF Waves in Mercury's Inner Magnetosphere." AGU Fall Meeting Abstracts, A1603-:

    DiBraccio, G. A., J. A. Slavin, S. A. Boardsen, et al. B. J. Anderson, H. Korth, T. Zurbuchen, J. M. Raines, R. L. McNutt, and S. C. Solomon. 2011. "MESSENGER observations of magnetopause structure at Mercury." AGU Fall Meeting Abstracts, A1601-:

    Slavin, J. A., S. A. Boardsen, M. Sarantos, et al. D. N. Baker, B. J. Anderson, H. Korth, D. Schriver, T. Zurbuchen, J. M. Raines, and S. C. Solomon. 2011. "Structure of Mercury's magnetosphere during MESSENGER's first three months in orbit." AGU Fall Meeting Abstracts, A1599-:

    Sundberg, T., S. A. Boardsen, J. A. Slavin, et al. B. J. Anderson, H. Korth, T. H. Zurbuchen, J. M. Raines, and S. C. Solomon. 2011. "MESSENGER observations of large-amplitude Kelvin-Helmholtz waves at Mercury's magnetopause." EPSC-DPS Joint Meeting 2011, 844-:

    Imber, S. M., S. A. Boardsen, H. Korth, and S. C. Solomon. 2011. "Formation and Transport of Flux Transfer Events at Mercury." EPSC-DPS Joint Meeting 2011, 321-:

    Boardsen, S. A., B. J. Anderson, J. A. Slavin, et al. H. Korth, D. Schriver, and S. C. Solomon. 2011. "MESSENGER observations of ULF waves in Mercury's inner magnetosphere." EPSC-DPS Joint Meeting 2011, 239-:

    Uritsky, V. M., J. A. Slavin, G. V. Khazanov, et al. E. F. Donovan, S. A. Boardsen, B. J. Anderson, and H. Korth. 2011. "Kinetic-scale magnetic turbulence and finite Larmor radius effects at Mercury." J Geophys Res, 116: A09236 [ doi:10.1029/2011JA016744]

    Jian, L. K., C. T. Russell, J. G. Luhmann, et al. B. J. Anderson, S. A. Boardsen, R. J. Strangeway, M. M. Cowee, and A. Wennmacher. 2010. "Observations of ion cyclotron waves in the solar wind near 0.3 AU." Journal of Geophysical Research (Space Physics), 115: [12115-10.1029/2010JA015737]

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, et al. H. Korth, J. M. Raines, S. C. Solomon, G. Gloeckler, and T. Zurbuchen. 2010. "MESSENGER Plasma Wave Observations in Mercury's Magnetosphere." AGU Fall Meeting Abstracts, 1805-:

    Sundberg, T., S. A. Boardsen, J. A. Slavin, et al. L. G. Blomberg, J. A. Cumnock, S. C. Solomon, B. J. Anderson, and H. Korth. 2010. "Reconstruction of propagating Kelvin-Helmholtz vortices at Mercury's magnetopause." AGU Fall Meeting Abstracts, 7-:

    Schriver, D., P. M. Travnicek, M. Ashour-Abdalla, et al. R. L. Richard, P. Hellinger, J. A. Slavin, B. J. Anderson, D. N. Baker, S. A. Boardsen, R. E. Gold, G. C. Ho, H. Korth, S. M. Krimigis, W. E. McClintock, T. M. Orlando, M. Sarantos, A. L. Sprague, and R. D. Starr. 2010. "Electron Transport and Energization in Mercury's Magnetosphere." AGU Fall Meeting Abstracts, 1897-:

    Fung, S. F., L. N. Garcia, S. A. Boardsen, K. Hashimoto, and H. Matsumoto. 2010. "Terrestrial Myriametric Radio Burst Observed by IMAGE and Geotail Satellites." AGU Fall Meeting Abstracts, 1734-:

    Sundberg, T., S. A. Boardsen, J. A. Slavin, L. G. Blomberg, and H. Korth. 2010. "The Kelvin-Helmholtz instability at Mercury: An assessment." Planetary and Space Science, 58: 1434-1441 [10.1016/j.pss.2010.06.008]

    Benna, M., B. Anderson, D. Baker, et al. S. A. Boardsen, G. Gloeckler, R. Gold, G. Ho, R. M. Killen, H. Korth, S. Krimigis, M. E. Purucker, R. McNutt, J. Raines, W. McClintock, M. Sarantos, J. A. Slavin, S. Solomon, and T. Zurbuchen. 2010. "Modeling of the magnetosphere of Mercury at the time of the first MESSENGER flyby ." Icarus, 209 (1): 3-10.

    Alexeev, I., E. Belenkaya, J. A. Slavin, et al. H. Korth, B. Anderson, D. Baker, S. A. Boardsen, C. Johnson, M. E. Purucker, M. Sarantos, and S. Solomon. 2010. "Mercury's magnetospheric magnetic field after the first two MESSENGER flybys." Icarus, 209 (1): 23-39.

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. D. N. Baker, S. A. Boardsen, H. Korth, S. M. Krimigis, R. L. McNutt, S. C. Solomon, and T. H. Zurbuchen. 2009. "MESSENGER Observations of Magnetic Reconnection in Mercury's Magnetosphere." EGU General Assembly Conference Abstracts, 11: 3847-.

    Alexeev, I. I., E. S. Belenkaya, J. A. Slavin, et al. M. H. Acuna, B. J. Anderson, S. A. Boardsen, C. L. Johnson, K. Haje, M. E. Purucker, M. Sarantos, and S. C. Solomon. 2009. "Self-consistent Planetary Dipole and Paraboloidal Model Parameters Fitting by the Mercury's Magnetic Field after MESSENGER's First and Second Flybys." AGU Spring Meeting Abstracts, 4-:

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. D. N. Baker, S. A. Boardsen, G. Gloeckler, R. E. Gold, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, D. Schriver, S. C. Solomon, P. Travnieek, and T. H. Zurbuchen. 2009. "MESSENGER Observations of Mercury's Magnetosphere." AGU Spring Meeting Abstracts, 3-:

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, et al. M. H. Acuna, H. Korth, and S. C. Solomon. 2009. "Comparison of Ultra-Low-Frequency Waves at Mercury under Northward and Southward IMF." AGU Spring Meeting Abstracts, A3-:

    Wang, Y., D. G. Sibeck, S. A. Boardsen, H. Karimabadi, and T. Sipes. 2009. "A New 3D Asymmetric Magnetopause Model with New Consistent Magnetopause Crossing Database and Machine Learning Techniques." AGU Fall Meeting Abstracts, A1598-:

    Anderson, B. J., D. Baker, S. A. Boardsen, et al. R. M. Killen, H. Korth, S. M. Krimigis, M. E. Purucker, R. L. McNutt, J. M. Raines, W. E. McClintock, M. Sarantos, J. A. Slavin, S. C. Solomon, D. Schriver, P. Travnicek, and T. Zurbuchen. 2009. "MHD modeling of the interaction of the magnetosphere of Mercury with the solar wind during the MESSENGER flybys." AGU Fall Meeting Abstracts, A8-:

    Korth, H., B. J. Anderson, J. A. Slavin, et al. S. A. Boardsen, S. M. Krimigis, R. E. Gold, R. L. McNutt, S. C. Solomon, C. L. Johnson, and M. E. Purucker. 2009. "Overview of magnetic field observations from MESSENGER’s third flyby of Mercury." AGU Fall Meeting Abstracts, A3-:

    Slavin, J. A., B. J. Anderson, D. Baker, et al. S. A. Boardsen, C. L. Johnson, G. Gloeckler, R. E. Gold, R. M. Killen, H. Korth, S. M. Krimigis, W. E. McClintock, R. L. McNutt, M. E. Purucker, M. Sarantos, D. Schriver, S. C. Solomon, A. L. Sprague, R. J. Vervack, T. Zurbuchen, and P. Travnicek. 2009. "Mercury’s atmosphere and magnetosphere: MESSENGER third flyby observations (Invited)." AGU Fall Meeting Abstracts, A1-:

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, H. Korth, and S. C. Solomon. 2009. "Ultra-Low-Frequency Wave Observations at Mercury during the 29 September 2009 MESSENGER Flyby." AGU Fall Meeting Abstracts, A1205-:

    Krimigis, S. M., J. A. Slavin, M. A. Acuna, et al. B. J. Anderson, D. N. Baker, S. A. Boardsen, G. Gloeckler, R. E. Gold, and G. C. Ho. 2009. "MESSENGER observations of Mercury's Dynamic Atmosphere and Magnetosphere." European Planetary Science Congress 2009, 384-:

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, et al. M. H. Acuna, H. Korth, and S. C. Solomon. 2008. "Narrow-Band Ultra-Low-Frequency Wave Observations During the October 6, 2008, Flyby of Mercury." AGU Fall Meeting Abstracts, A37-:

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, et al. M. H. Acuna, H. Korth, and S. C. Solomon. 2008. "Narrow-Band Ultra-Low-Frequency Wave Observations During the October 6, 2008, Flyby of Mercury." AGU Fall Meeting Abstracts, A37-:

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. D. Schriver, S. C. Solomon, D. N. Baker, S. A. Boardsen, G. Gloeckler, R. E. Gold, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, P. Travnicek, and T. H. Zurbuchen. 2008. "MESSENGER Observations of Magnetic Reconnection and its Effects on Mercury's Magnetosphere." AGU Fall Meeting Abstracts, A5-:

    Boardsen, S. A., B. J. Anderson, H. Korth, et al. J. A. Slavin, M. H. Acuna, J. L. Green, J. M. Raines, T. H. Zurbuchen, D. Schriver, and P. Travnicek. 2008. "Ultra-low-frequency wave observations by MESSENGER during its January 2008 flyby through Mercury's magnetosphere." European Planetary Science Congress 2008, 279-:

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. D. N. Baker, S. A. Boardsen, G. Gloeckler, R. E. Gold, G. C. Ho, H. Korth, S. M. Krimigis, M. Sarantos, S. A. Livi, R. L. McNutt, J. M. Raines, D. Schriver, S. C. Solomon, P. Travnicek, and T. H. Zurbuchen. 2008. "MESSENGER Observations of Mercury's Magnetopause: Structure and Dynamics." AGU Spring Meeting Abstracts, A1-:

    Anderson, B. J., M. H. Acuna, J. A. Slavin, et al. H. Korth, M. E. Purucker, C. L. Johnson, D. Schriver, S. A. Boardsen, and S. C. Solomon. 2008. "The Magnetic Field of Mercury: Insights After the First MESSENGER Flyby." Lunar and Planetary Institute Science Conference Abstracts, 39: 1363-.

    Sarantos, M., J. A. Slavin, S. A. Boardsen, and R. M. Killen. 2008. "Distribution of sodium pickup ions during MESSENGER's first and second Mercury flybys: constraints on exospheric models." AGU Fall Meeting Abstracts, A43-:

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, et al. M. H. Acuna, H. Korth, and S. C. Solomon. 2008. "Narrow-Band Ultra-Low-Frequency Wave Observations During the October 6, 2008, Flyby of Mercury." AGU Fall Meeting Abstracts, A37-:

    Alexeev, I. I., E. S. Belenkaya, J. A. Slavin, and S. A. Boardsen. 2008. "Definition of Mercury Dipole Moment and its Offset Using the MESSENGER First Flyby data." AGU Fall Meeting Abstracts, A2-:

    Anderson, B. J., H. Korth, M. H. Acuna, et al. J. A. Slavin, S. A. Boardsen, J. M. Raines, T. H. Zurbuchen, G. Gloeckler, S. M. Krimigis, G. C. Ho, R. E. Gold, R. L. McNutt, S. C. Solomon, C. L. Johnson, H. Uno, and M. E. Purucker. 2008. "Overview of magnetosphere and magnetic field observations from MESSENGER's second flyby of Mercury." AGU Fall Meeting Abstracts, A4-:

    Boardsen, S. A., B. J. Anderson, H. Korth, and J. A. Slavin. 2008. "Ultra-Low Frequency Wave Observations by MESSENGER during its January 2008 flyby through Mercury's magnetosphere." AGU Spring Meeting Abstracts, A6-:

    Anderson, B. J., J. A. Slavin, M. H. Acuna, et al. H. Korth, T. H. Zurbuchen, J. M. Raines, G. Gloecker, R. E. Gold, G. C. Ho, S. M. Krimigis, S. A. Livi, D. N. Baker, D. Schriver, P. Travnicek, S. A. Boardsen, R. L. McNutt, and S. C. Solomon. 2008. "An Overview of MESSENGER's First Encounter with Mercury's Magnetosphere." AGU Spring Meeting Abstracts, A1-:

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. S. Barabash, S. A. Boardsen, G. Gloeckler, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, S. C. Solomon, T. Zhang, and T. H. Zurbuchen. 2007. "Modeling of the Interaction Between the Induced Magnetosphere of Venus and the Solar Wind During the MESSENGER Flyby." AGU Fall Meeting Abstracts, 7-:

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. S. Barabash, S. A. Boardsen, G. Gloeckler, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, S. C. Solomon, T. Zhang, and T. H. Zurbuchen. 2007. "Modeling of the Interaction Between the Induced Magnetosphere of Venus and the Solar Wind During the MESSENGER Flyby." AGU Fall Meeting Abstracts, 7-:

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. S. Barabash, S. A. Boardsen, M. Fraenz, G. Gloeckler, R. E. Gold, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, S. C. Solomon, T. L. Zhang, and T. H. Zurbuchen. 2007. "MESSENGER and Venus Express Observations of the Solar Wind Interaction with Venus: A Dual Spacecraft Study." AGU Fall Meeting Abstracts, 6-:

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. S. Barabash, S. A. Boardsen, G. Gloeckler, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, S. C. Solomon, T. Zhang, and T. H. Zurbuchen. 2007. "Modeling of the Interaction Between the Induced Magnetosphere of Venus and the Solar Wind During the MESSENGER Flyby." AGU Fall Meeting Abstracts, 7-:

    Boardsen, S. A., and J. A. Slavin. 2007. "Search for pick-up ion generated Na+ cyclotron waves at Mercury." Geophysical Research Letters, 34: [22106-10.1029/2007GL031504]

    Boardsen, S. A., and J. A. Slavin. 2007. "Search for Na+ Pickup Ion Generated Waves at Mercury." AGU Spring Meeting Abstracts, 1-:

    Boardsen, S. A., N. Omidi, and J. A. Slavin. 2007. "Thermalization of Na+ Pickup Ions in Mercury's Magnetosheath and Magnetosphere via Hybrid Simulation." AGU Fall Meeting Abstracts, 1410-:

    Korth, H., B. J. Anderson, M. H. Acuna, J. A. Slavin, and S. A. Boardsen. 2007. "Coherent Electromagnetic Waves Observed Upstream of the Venus Bow Shock Recorded by the MESSENGER Magnetometer Experiment." AGU Fall Meeting Abstracts, 8-:

    Boardsen, S. A., and J. A. Slavin. 2006. "Examination of MARINER-10 Magnetic Field Data for Heavy Ion Signatures During the Mercury I and III Encounters by Mariner-10." AGU Fall Meeting Abstracts, A309-:

    Boardsen, S. A., J. L. Green, K. Hashimoto, et al. H. Matsumoto, D. L. Gallagher, and P. A. Webb. 2006. "Is the Linear Mode Conversion Theory viable for generating Kilometric Continuum?" AGU Spring Meeting Abstracts, 10-:

    Benson, R. F., V. A. Osherovich, J. Fainberg, et al. J. L. Green, S. A. Boardsen, L. N. Garcia, N. Tsyganenko, and B. W. Reinisch. 2006. "RPI/IMAGE Plasma and Magnetic Signatures of Solar Wind/Magnetosphere Interactions." AGU Spring Meeting Abstracts, A5-:

    Garcia, L. N., J. L. Green, S. A. Boardsen, S. F. Fung, and B. W. Reinisch. 2006. "Auroral Kilometric Radiation Source Region Variations with Season and Solar Cycle." Planetary Radio Emissions VI, 231-:

    Green, J. L., S. A. Boardsen, L. N. Garcia, and S. F. Fung. 2005. "Role of Density Depletion Ducts on the Generation of Continuum Radiation." AGU Fall Meeting Abstracts, 1178-:

    Boardsen, S. A., J. L. Green, and D. L. Gallagher. 2005. "Analysis of 'Christmas Tree' radiation patterns seen in Kilometric Continuum detected by RPI on the IMAGE spacecraft." AGU Fall Meeting Abstracts, 1177-:

    Fung, S. F., J. L. Green, L. Garcia, et al. S. A. Boardsen, X. Shao, and L. C. Tan. 2005. "Correlative Study of High- and Low-Altitude Whistler Wave Observations and Radiation Belt Structure." AGU Spring Meeting Abstracts, A5-:

    Collier, M. R., T. E. Moore, M. C. Fok, et al. B. Pilkerton, S. Boardsen, and H. Khan. 2005. "Low-energy neutral atom signatures of magnetopause motion in response to southward B-z." JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 110: [10.1029/2004JA010626]

    Green, J. L., and S. A. Boardsen. 2004. "Evolution of the Aurora during the Great Geomagnetic Storm of 1859." AGU Fall Meeting Abstracts, A8-:

    Boardsen, S. A., J. L. Green, K. Hashimoto, et al. H. Matsumoto, B. R. Sandel, and B. W. Reinisch. 2004. "New Observations of the Non-Thermal Continuum Radiation at the Plasmapause." AGU Fall Meeting Abstracts, A1197-:

    Boardsen, S. A., J. L. Green, S. F. Fung, L. N. Garcia, and B. Reinisch. 2003. "Intensity Distribution of Plasmaspheric Hiss in the Plasmasphere." AGU Fall Meeting Abstracts, 544-:

    Green, J. L., S. A. Boardsen, L. Garcia, et al. S. F. Fung, H. U. Frey, S. B. Mende, and B. W. Reinisch. 2002. "Correlations between AKR with Auroral Dynamics and Dipole Tilt Angle." AGU Fall Meeting Abstracts, 628-:

    Carpenter, D. L., M. A. Spasojevic, T. F. Bell, et al. U. S. Inan, B. W. Reinisch, I. A. Galkin, R. F. Benson, J. L. Green, S. F. Fung, and S. A. Boardsen. 2002. "Small-scale field-aligned plasmaspheric density structures inferred from the Radio Plasma Imager on IMAGE." Journal of Geophysical Research (Space Physics), 107: [1258-10.1029/2001JA009199]

    Green, J. L., S. F. Fung, S. A. Boardsen, R. F. Benson, and B. W. Reinisch. 2002. "Plasma Waves in the Plasmapause Region: Recent Results." AGU Spring Meeting Abstracts, -:

    Boardsen, S. A., J. L. Green, S. F. Fung, and B. W. Reinisch. 2002. "Characteristics of the Kilometric Continuum Source Region as Observed by the Radio Plasma Imager on IMAGE." AGU Spring Meeting Abstracts, A10-:

    Rilee, M. L., S. A. Boardsen, M. K. Bhat, and S. A. Curtis. 2001. "A Virtual Principal Investigator for on Board Space Science Data Analysis." AGU Spring Meeting Abstracts, 21-:

    Reinisch, B. W., X. Huang, D. M. Haines, et al. I. A. Galkin, J. L. Green, R. F. Benson, S. F. Fung, W. W. Taylor, P. H. Reiff, D. L. Gallagher, J.-L. Bougeret, R. Manning, D. L. Carpenter, and S. A. Boardsen. 2001. "First results from the Radio Plasma Imager on IMAGE." Geophysical Research Letters, 28: 1167-1170 [10.1029/2000GL012398]

    Rilee, M. L., S. A. Curtis, J. C. Ling, et al. D. S. Katz, M. A. Johnson, M. K. Bhat, S. A. Boardsen, and T. W. Atwater. 2001. "MPACT: Architecture and Design of a COTS Science Co-Processor for Space Science Missions." AGU Fall Meeting Abstracts, A840-:

    Boardsen, S. A., J. L. Green, S. F. Fung, et al. B. W. Reinich, B. R. Sandel, R. R. Anderson, H. Matsumoto, K. Hashimoto, H. Kojima, M. L. Kaiser, and T. Forrester. 2001. "The association of kilometric continuum with plasmaspheric bite-outs: a multi-event study using IMAGE, GEOTAIL and WIND measurements." AGU Fall Meeting Abstracts, A766-:

    Collier, M. R., T. E. Moore, K. W. Ogilvie, et al. D. Chornay, J. W. Keller, S. Boardsen, J. Burch, B. El Marji, M. C. Fok, S. A. Fuselier, A. G. Ghielmetti, B. L. Giles, D. C. Hamilton, B. L. Peko, J. M. Quinn, E. C. Roelof, T. M. Stephen, G. R. Wilson, and P. Wurz. 2001. "Observations of neutral atoms from the solar wind." Journal of Geophysical Research, 106 (A11): 24,893-24,906 [10.1029/2000JA000382]

    Green, J. L., R. F. Benson, S. F. Fung, et al. W. W. Taylor, S. A. Boardsen, and B. W. Reinisch. 2000. "Radio Sounding in the Earth's Magnetosphere." Washington DC American Geophysical Union Geophysical Monograph Series, 119: 359-.

    Green, J. L., R. F. Benson, S. F. Fung, et al. W. W. Taylor, S. A. Boardsen, B. W. Reinisch, D. M. Haines, K. Bibl, G. Cheney, I. A. Galkin, X. Huang, S. H. Myers, G. S. Sales, J.-L. Bougeret, R. Manning, N. Meyer-Vernet, M. Moncuquet, D. L. Carpenter, D. L. Gallagher, and P. H. Reiff. 2000. "Radio plasma imager simulations and measurements." Space Science Reviews, 91: 361-389.

    Eastman, T. E., S. A. Boardsen, S.-H. Chen, S. F. Fung, and R. L. Kessel. 2000. "Configuration of high-latitude and high-altitude boundary layers." Journal of Geophysical Research, 105: 23221-23238 [10.1029/1999JA900269]

    Boardsen, S. A., T. E. Eastman, T. Sotirelis, and J. L. Green. 2000. "An empirical model of the high-latitude magnetopause." Journal of Geophysical Research, 105: 23193-23220 [10.1029/1998JA000143]

    Chen, S.-H., S. A. Boardsen, S. F. Fung, et al. J. L. Green, R. L. Kessel, L. C. Tan, T. E. Eastman, and J. D. Craven. 1997. "Exterior and interior polar cusps: Observations from Hawkeye." Journal of Geophysical Research, 102: 11335-11348 [10.1029/97JA00743]

    Kessel, R. L., S.-H. Chen, J. L. Green, et al. S. F. Fung, S. A. Boardsen, L. C. Tan, T. E. Eastman, J. D. Craven, and L. A. Frank. 1996. "Evidence of high-latitude reconnecting during northward IMF: Hawkeye observations." Geophysical Research Letters, 23: 583-586 [10.1029/95GL03083]

    Olsen, R. C., L. J. Scott, and S. A. Boardsen. 1994. "Comparison between Liouville's theorem and observed latitudinal distributions of trapped ions in the plasmapause region." Journal of Geophysical Research, 99: 2191-2203 [10.1029/93JA02776]

    Boardsen, S. A., D. L. Gallagher, D. A. Gurnett, W. K. Peterson, and J. L. Green. 1992. "Funnel-shaped, low-frequency equatorial waves." Journal of Geophysical Research, 97: [14967-10.1029/92JA00827]

    Boardsen, S. A., D. A. Gurnett, and W. K. Peterson. 1990. "Double-peaked electrostatic ion cyclotron harmonic waves." Journal of Geophysical Research, 95: 10591-10598 [10.1029/JA095iA07p10591]

    Peterson, W. K., E. G. Shelley, S. A. Boardsen, et al. D. A. Gurnett, B. G. Ledley, M. Sugiura, and T. E. Moore. 1988. "Transverse ion energization and low-frequency plasma waves in the mid-altitude auroral zone: A case study." J. Geophys. Res., 93 (A10): 11,405-11,428 [10.1029/JA093iA10p11405]

    Brief Bio

    Dr Boardsen studies plasma waves, plasma structures, and their interaction with particles in planetary magnetospheres. He has worked at GSFC since 1993. He received his PhD in physics from the University of Iowa in 1988.

    He is currently working on RBSP (Van Allen Probes), C/NOFS, and MESSENGER missions. He also works with the SPDF. His current research topics are 1) coherent ~1 Hz waves found in Mercury's inner magnetosphere, 2) the characterizing the fine frequency structure and surveying of the fast mode between the proton and lower hybrid frequencies observed by RBSP, 3) relationship between waves observed by C/NOFS and RBSP and 4) plasma wave ray-tracing and path integrated gain analysis of waves in the planetary magnetospheres. He is working on improving the accessibility of data by the science community available from the SPDF.

    One topic he focused on was the warm plasma ray-tracing of the ion-Bernstein mode in Mercury's inner (< 2 Mercury radii) magnetosphere in an environment that has large planetary proton loss cone distributions. He showed that the ~1 Hz harmonic waves observed in Mercury's inner magnetosphere are highly unstable to these proton loss cone distributions. He discovered that, through propagation, these waves can become highly compressional in ~0.1 proton beta environment, that an environment of ~2 proton beta is not needed for these waves to become highly compressional. He found the this mode cycles back and forth across the magnetic equator. For 1/2 of each cycle the waves experience strong growth with moderate compression and on the other 1/2 these waves experience strong compression with small growth or damping. Two types of propagation cycles where observed: 1) one where compression maximizes at the magnetic equator, and 2) the other where the compression maximizes off the magnetic equator. During the compression the group velocity drops and the wave energy piles up. He suggested that the later cycle explains why the compression is sometimes observed to maximize (straddle) off the magnetic equator. A dynamic spectrogram is shown along with the ray-tracing of the compression maximizing off (straddles) the magnetic equator. He reconciled the frequency shift between the observed and linear growth rate derived frequencies by proposing that the waves are anti-aligned with the bulk plasma flow velocity creating a Doppler shift, and showed that with this alignment the waves experience maximum growth while inside the magnetosphere.

    Publications

    Refereed

    Schriver, D., P. M. Travnicek, B. J. Anderson, et al. M. Ashour-Abdalla, D. N. Baker, S. A. Boardsen, P. Hellinger, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, R. L. Richard, J. A. Slavin, S. C. Solomon, R. D. Starr, and T. Zurbuchen. 2013. "What Happened to the High-Energy (> 100 keV) Particles at Mercury?" AGU Fall Meeting Abstracts

    DiBraccio, G. A., J. A. Slavin, S. A. Boardsen, et al. B. J. Anderson, H. Korth, T. Zurbuchen, J. M. Raines, D. N. Baker, R. L. McNutt, and S. C. Solomon. 2013. "MESSENGER Observations of Magnetopause Reconnection at Mercury (Invited)." AGU Fall Meeting Abstracts A3-

    DiBraccio, G. A., J. A. Slavin, S. M. Imber, et al. D. J. Gershman, J. M. Raines, S. A. Boardsen, B. J. Anderson, H. Korth, T. Zurbuchen, R. L. McNutt, and S. C. Solomon. 2013. "MESSENGER Observations of Plasmoid-type Flux Ropes in Mercury's Magnetotail." AGU Fall Meeting Abstracts -

    Imber, S. M., J. A. Slavin, S. A. Boardsen, et al. B. J. Anderson, H. Korth, D. N. Baker, R. L. McNutt, and S. C. Solomon. 2013. "MESSENGER observations of dayside flux transfer events: Do they drive Mercury's substorm cycle? (Invited)." AGU Fall Meeting Abstracts 7-

    Wang, Y., D. G. Sibeck, J. Merka, et al. S. A. Boardsen, H. Arimabadi, T. B. Sipes, J. Safrankova, K. Jelinek, and R. Lin. 2013. "A new three-dimensional magnetopause model with a support vector egression machine and a large database of multiple spacecraft bservations." Journal of Geophysical Research (Space Physics) 118 2173-2184 [10.1002/jgra.50226]

    Lee, K., E. Kim, S. A. Boardsen, et al. J. Johnson, D. Lee, and J. A. Slavin. 2013. "ULF wave modeling in Mercury's magnetosphere: Field-line resonance structures at Mercury." AGU Fall Meeting Abstracts A2165-

    DiBraccio, G. A., J. A. Slavin, S. A. Boardsen, et al. B. J. Anderson, H. Korth, T. H. Zurbuchen, J. M. Raines, R. L. McNutt, and S. C. Solomon. 2012. "MESSENGER observations of magnetopause structure at Mercury." EGU General Assembly Conference Abstracts 14 6363-

    Sundberg, T., J. A. Slavin, S. A. Boardsen, et al. B. J. Anderson, H. Korth, J. M. Raines, T. H. Zurbuchen, G. A. DiBraccio, G. Gloeckler, G. C. Ho, M. Sarantos, S. M. Krimigis, R. L. McNutt, D. N. Baker, and S. C. Solomon. 2012. "MESSENGER observations of dipolarization events in Mercury's magnetotail." EGU General Assembly Conference Abstracts 14 3168-

    Slavin, J. A., S. M. Imber, G. A. DiBraccio, et al. T. Sundberg, S. A. Boardsen, B. J. Anderson, H. Korth, D. N. Baker, R. L. McNutt, and S. C. Solomon. 2012. "MESSENGER Observations of Magnetotail Dynamics at Mercury." EGU General Assembly Conference Abstracts 14 3817-

    Slavin, J. A., G. A. DiBraccio, J. M. Raines, et al. T. H. Zurbuchen, G. Gloeckler, S. A. Boardsen, M. Sarantos, T. Sundberg, B. J. Anderson, H. Korth, G. C. Ho, S. M. Krimigis, R. L. McNutt, D. N. Baker, and S. C. Solomon. 2012. "MESSENGER Observations of Magnetopause Reconnection and Its Effects on Mercury's Magnetosphere." EGU General Assembly Conference Abstracts 14 3813-

    Boardsen, S. A., B. J. Anderson, J. A. Slavin, et al. J. M. Raines, H. Korth, D. Schriver, and S. C. Solomon. 2012. "Coherent ULF waves in Mercury's nightside magnetosphere: Their source and impact." EGU General Assembly Conference Abstracts 14 3194-

    Collinson, G. A., D. G. Sibeck, A. Masters, et al. N. Shane, J. A. Slavin, A. J. Coates, T. L. Zhang, M. Sarantos, S. Boardsen, T. E. Moore, and S. Barabash. 2012. "Hot flow anomalies at Venus." JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 117 [10.1029/2011JA017277]

    Uritsky, V. M., J. A. Slavin, G. V. Khazanov, et al. E. F. Donovan, S. A. Boardsen, B. J. Anderson, and H. Korth. 2011. "Kinetic-scale magnetic turbulence and finite Larmor radius effects at Mercury." Journal of Geophysical Research (Space Physics) 116 [9236-10.1029/2011JA016744]

    Uritsky, V. M., J. A. Slavin, G. V. Khazanov, et al. E. Donovan, S. A. Boardsen, B. J. Anderson, and H. Korth. 2011. "Kinetic-Scale Magnetic Fluctuations in the Near-Mercury Space Environment." AGU Fall Meeting Abstracts A2054-

    Collinson, G. A., D. G. Sibeck, A. Masters, et al. N. Shane, J. A. Slavin, A. J. Coates, T. Zhang, S. A. Boardsen, T. E. Moore, and S. Barabash. 2011. "Hot Flow Anomalies at Venus." AGU Fall Meeting Abstracts A1995-

    Slavin, J. A., S. M. Imber, S. A. Boardsen, et al. B. J. Anderson, H. Korth, T. Zurbuchen, J. M. Raines, D. N. Baker, D. Schriver, and S. C. Solomon. 2011. "MESSENGER Observations of Flux Transfer Events at Mercury." AGU Fall Meeting Abstracts A6-

    Schriver, D., P. M. Travnicek, B. J. Anderson, et al. M. Ashour-Abdalla, D. N. Baker, S. A. Boardsen, R. E. Gold, P. Hellinger, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, R. L. Richard, J. A. Slavin, S. C. Solomon, R. D. Starr, and T. Zurbuchen. 2011. "MESSENGER Observations and Kinetic Simulations of Quasi-Trapped Ion and Electron Populations at Mercury." AGU Fall Meeting Abstracts A10-

    Sundberg, T., S. A. Boardsen, J. A. Slavin, et al. B. J. Anderson, H. Korth, T. Zurbuchen, J. M. Raines, and S. C. Solomon. 2011. "MESSENGER observations of Kelvin-Helmholtz waves at Mercury's magnetopause." AGU Fall Meeting Abstracts A1604-

    Boardsen, S. A., B. J. Anderson, J. A. Slavin, et al. H. Korth, D. Schriver, and S. C. Solomon. 2011. "Distribution of ~1 Hz ULF Waves in Mercury's Inner Magnetosphere." AGU Fall Meeting Abstracts A1603-

    DiBraccio, G. A., J. A. Slavin, S. A. Boardsen, et al. B. J. Anderson, H. Korth, T. Zurbuchen, J. M. Raines, R. L. McNutt, and S. C. Solomon. 2011. "MESSENGER observations of magnetopause structure at Mercury." AGU Fall Meeting Abstracts A1601-

    Slavin, J. A., S. A. Boardsen, M. Sarantos, et al. D. N. Baker, B. J. Anderson, H. Korth, D. Schriver, T. Zurbuchen, J. M. Raines, and S. C. Solomon. 2011. "Structure of Mercury's magnetosphere during MESSENGER's first three months in orbit." AGU Fall Meeting Abstracts A1599-

    Sundberg, T., S. A. Boardsen, J. A. Slavin, et al. B. J. Anderson, H. Korth, T. H. Zurbuchen, J. M. Raines, and S. C. Solomon. 2011. "MESSENGER observations of large-amplitude Kelvin-Helmholtz waves at Mercury's magnetopause." EPSC-DPS Joint Meeting 2011 844-

    Imber, S. M., S. A. Boardsen, H. Korth, and S. C. Solomon. 2011. "Formation and Transport of Flux Transfer Events at Mercury." EPSC-DPS Joint Meeting 2011 321-

    Boardsen, S. A., B. J. Anderson, J. A. Slavin, et al. H. Korth, D. Schriver, and S. C. Solomon. 2011. "MESSENGER observations of ULF waves in Mercury's inner magnetosphere." EPSC-DPS Joint Meeting 2011 239-

    Uritsky, V. M., J. A. Slavin, G. V. Khazanov, et al. E. F. Donovan, S. A. Boardsen, B. J. Anderson, and H. Korth. 2011. "Kinetic-scale magnetic turbulence and finite Larmor radius effects at Mercury." J Geophys Res 116 A09236 [ doi:10.1029/2011JA016744]

    Jian, L. K., C. T. Russell, J. G. Luhmann, et al. B. J. Anderson, S. A. Boardsen, R. J. Strangeway, M. M. Cowee, and A. Wennmacher. 2010. "Observations of ion cyclotron waves in the solar wind near 0.3 AU." Journal of Geophysical Research (Space Physics) 115 [12115-10.1029/2010JA015737]

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, et al. H. Korth, J. M. Raines, S. C. Solomon, G. Gloeckler, and T. Zurbuchen. 2010. "MESSENGER Plasma Wave Observations in Mercury's Magnetosphere." AGU Fall Meeting Abstracts 1805-

    Sundberg, T., S. A. Boardsen, J. A. Slavin, et al. L. G. Blomberg, J. A. Cumnock, S. C. Solomon, B. J. Anderson, and H. Korth. 2010. "Reconstruction of propagating Kelvin-Helmholtz vortices at Mercury's magnetopause." AGU Fall Meeting Abstracts 7-

    Schriver, D., P. M. Travnicek, M. Ashour-Abdalla, et al. R. L. Richard, P. Hellinger, J. A. Slavin, B. J. Anderson, D. N. Baker, S. A. Boardsen, R. E. Gold, G. C. Ho, H. Korth, S. M. Krimigis, W. E. McClintock, T. M. Orlando, M. Sarantos, A. L. Sprague, and R. D. Starr. 2010. "Electron Transport and Energization in Mercury's Magnetosphere." AGU Fall Meeting Abstracts 1897-

    Fung, S. F., L. N. Garcia, S. A. Boardsen, K. Hashimoto, and H. Matsumoto. 2010. "Terrestrial Myriametric Radio Burst Observed by IMAGE and Geotail Satellites." AGU Fall Meeting Abstracts 1734-

    Sundberg, T., S. A. Boardsen, J. A. Slavin, L. G. Blomberg, and H. Korth. 2010. "The Kelvin-Helmholtz instability at Mercury: An assessment." Planetary and Space Science 58 1434-1441 [10.1016/j.pss.2010.06.008]

    Benna, M., B. Anderson, D. Baker, et al. S. A. Boardsen, G. Gloeckler, R. Gold, G. Ho, R. M. Killen, H. Korth, S. Krimigis, M. E. Purucker, R. McNutt, J. Raines, W. McClintock, M. Sarantos, J. A. Slavin, S. Solomon, and T. Zurbuchen. 2010. "Modeling of the magnetosphere of Mercury at the time of the first MESSENGER flyby ." Icarus 209 (1): 3-10

    Alexeev, I., E. Belenkaya, J. A. Slavin, et al. H. Korth, B. Anderson, D. Baker, S. A. Boardsen, C. Johnson, M. E. Purucker, M. Sarantos, and S. Solomon. 2010. "Mercury's magnetospheric magnetic field after the first two MESSENGER flybys." Icarus 209 (1): 23-39

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. D. N. Baker, S. A. Boardsen, H. Korth, S. M. Krimigis, R. L. McNutt, S. C. Solomon, and T. H. Zurbuchen. 2009. "MESSENGER Observations of Magnetic Reconnection in Mercury's Magnetosphere." EGU General Assembly Conference Abstracts 11 3847-

    Alexeev, I. I., E. S. Belenkaya, J. A. Slavin, et al. M. H. Acuna, B. J. Anderson, S. A. Boardsen, C. L. Johnson, K. Haje, M. E. Purucker, M. Sarantos, and S. C. Solomon. 2009. "Self-consistent Planetary Dipole and Paraboloidal Model Parameters Fitting by the Mercury's Magnetic Field after MESSENGER's First and Second Flybys." AGU Spring Meeting Abstracts 4-

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. D. N. Baker, S. A. Boardsen, G. Gloeckler, R. E. Gold, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, D. Schriver, S. C. Solomon, P. Travnieek, and T. H. Zurbuchen. 2009. "MESSENGER Observations of Mercury's Magnetosphere." AGU Spring Meeting Abstracts 3-

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, et al. M. H. Acuna, H. Korth, and S. C. Solomon. 2009. "Comparison of Ultra-Low-Frequency Waves at Mercury under Northward and Southward IMF." AGU Spring Meeting Abstracts A3-

    Wang, Y., D. G. Sibeck, S. A. Boardsen, H. Karimabadi, and T. Sipes. 2009. "A New 3D Asymmetric Magnetopause Model with New Consistent Magnetopause Crossing Database and Machine Learning Techniques." AGU Fall Meeting Abstracts A1598-

    Anderson, B. J., D. Baker, S. A. Boardsen, et al. R. M. Killen, H. Korth, S. M. Krimigis, M. E. Purucker, R. L. McNutt, J. M. Raines, W. E. McClintock, M. Sarantos, J. A. Slavin, S. C. Solomon, D. Schriver, P. Travnicek, and T. Zurbuchen. 2009. "MHD modeling of the interaction of the magnetosphere of Mercury with the solar wind during the MESSENGER flybys." AGU Fall Meeting Abstracts A8-

    Korth, H., B. J. Anderson, J. A. Slavin, et al. S. A. Boardsen, S. M. Krimigis, R. E. Gold, R. L. McNutt, S. C. Solomon, C. L. Johnson, and M. E. Purucker. 2009. "Overview of magnetic field observations from MESSENGER’s third flyby of Mercury." AGU Fall Meeting Abstracts A3-

    Slavin, J. A., B. J. Anderson, D. Baker, et al. S. A. Boardsen, C. L. Johnson, G. Gloeckler, R. E. Gold, R. M. Killen, H. Korth, S. M. Krimigis, W. E. McClintock, R. L. McNutt, M. E. Purucker, M. Sarantos, D. Schriver, S. C. Solomon, A. L. Sprague, R. J. Vervack, T. Zurbuchen, and P. Travnicek. 2009. "Mercury’s atmosphere and magnetosphere: MESSENGER third flyby observations (Invited)." AGU Fall Meeting Abstracts A1-

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, H. Korth, and S. C. Solomon. 2009. "Ultra-Low-Frequency Wave Observations at Mercury during the 29 September 2009 MESSENGER Flyby." AGU Fall Meeting Abstracts A1205-

    Krimigis, S. M., J. A. Slavin, M. A. Acuna, et al. B. J. Anderson, D. N. Baker, S. A. Boardsen, G. Gloeckler, R. E. Gold, and G. C. Ho. 2009. "MESSENGER observations of Mercury's Dynamic Atmosphere and Magnetosphere." European Planetary Science Congress 2009 384-

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, et al. M. H. Acuna, H. Korth, and S. C. Solomon. 2008. "Narrow-Band Ultra-Low-Frequency Wave Observations During the October 6, 2008, Flyby of Mercury." AGU Fall Meeting Abstracts A37-

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, et al. M. H. Acuna, H. Korth, and S. C. Solomon. 2008. "Narrow-Band Ultra-Low-Frequency Wave Observations During the October 6, 2008, Flyby of Mercury." AGU Fall Meeting Abstracts A37-

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. D. Schriver, S. C. Solomon, D. N. Baker, S. A. Boardsen, G. Gloeckler, R. E. Gold, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, P. Travnicek, and T. H. Zurbuchen. 2008. "MESSENGER Observations of Magnetic Reconnection and its Effects on Mercury's Magnetosphere." AGU Fall Meeting Abstracts A5-

    Boardsen, S. A., B. J. Anderson, H. Korth, et al. J. A. Slavin, M. H. Acuna, J. L. Green, J. M. Raines, T. H. Zurbuchen, D. Schriver, and P. Travnicek. 2008. "Ultra-low-frequency wave observations by MESSENGER during its January 2008 flyby through Mercury's magnetosphere." European Planetary Science Congress 2008 279-

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. D. N. Baker, S. A. Boardsen, G. Gloeckler, R. E. Gold, G. C. Ho, H. Korth, S. M. Krimigis, M. Sarantos, S. A. Livi, R. L. McNutt, J. M. Raines, D. Schriver, S. C. Solomon, P. Travnicek, and T. H. Zurbuchen. 2008. "MESSENGER Observations of Mercury's Magnetopause: Structure and Dynamics." AGU Spring Meeting Abstracts A1-

    Anderson, B. J., M. H. Acuna, J. A. Slavin, et al. H. Korth, M. E. Purucker, C. L. Johnson, D. Schriver, S. A. Boardsen, and S. C. Solomon. 2008. "The Magnetic Field of Mercury: Insights After the First MESSENGER Flyby." Lunar and Planetary Institute Science Conference Abstracts 39 1363-

    Sarantos, M., J. A. Slavin, S. A. Boardsen, and R. M. Killen. 2008. "Distribution of sodium pickup ions during MESSENGER's first and second Mercury flybys: constraints on exospheric models." AGU Fall Meeting Abstracts A43-

    Boardsen, S. A., J. A. Slavin, B. J. Anderson, et al. M. H. Acuna, H. Korth, and S. C. Solomon. 2008. "Narrow-Band Ultra-Low-Frequency Wave Observations During the October 6, 2008, Flyby of Mercury." AGU Fall Meeting Abstracts A37-

    Alexeev, I. I., E. S. Belenkaya, J. A. Slavin, and S. A. Boardsen. 2008. "Definition of Mercury Dipole Moment and its Offset Using the MESSENGER First Flyby data." AGU Fall Meeting Abstracts A2-

    Anderson, B. J., H. Korth, M. H. Acuna, et al. J. A. Slavin, S. A. Boardsen, J. M. Raines, T. H. Zurbuchen, G. Gloeckler, S. M. Krimigis, G. C. Ho, R. E. Gold, R. L. McNutt, S. C. Solomon, C. L. Johnson, H. Uno, and M. E. Purucker. 2008. "Overview of magnetosphere and magnetic field observations from MESSENGER's second flyby of Mercury." AGU Fall Meeting Abstracts A4-

    Boardsen, S. A., B. J. Anderson, H. Korth, and J. A. Slavin. 2008. "Ultra-Low Frequency Wave Observations by MESSENGER during its January 2008 flyby through Mercury's magnetosphere." AGU Spring Meeting Abstracts A6-

    Anderson, B. J., J. A. Slavin, M. H. Acuna, et al. H. Korth, T. H. Zurbuchen, J. M. Raines, G. Gloecker, R. E. Gold, G. C. Ho, S. M. Krimigis, S. A. Livi, D. N. Baker, D. Schriver, P. Travnicek, S. A. Boardsen, R. L. McNutt, and S. C. Solomon. 2008. "An Overview of MESSENGER's First Encounter with Mercury's Magnetosphere." AGU Spring Meeting Abstracts A1-

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. S. Barabash, S. A. Boardsen, G. Gloeckler, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, S. C. Solomon, T. Zhang, and T. H. Zurbuchen. 2007. "Modeling of the Interaction Between the Induced Magnetosphere of Venus and the Solar Wind During the MESSENGER Flyby." AGU Fall Meeting Abstracts 7-

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. S. Barabash, S. A. Boardsen, G. Gloeckler, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, S. C. Solomon, T. Zhang, and T. H. Zurbuchen. 2007. "Modeling of the Interaction Between the Induced Magnetosphere of Venus and the Solar Wind During the MESSENGER Flyby." AGU Fall Meeting Abstracts 7-

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. S. Barabash, S. A. Boardsen, M. Fraenz, G. Gloeckler, R. E. Gold, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, S. C. Solomon, T. L. Zhang, and T. H. Zurbuchen. 2007. "MESSENGER and Venus Express Observations of the Solar Wind Interaction with Venus: A Dual Spacecraft Study." AGU Fall Meeting Abstracts 6-

    Slavin, J. A., M. H. Acuna, B. J. Anderson, et al. S. Barabash, S. A. Boardsen, G. Gloeckler, G. C. Ho, H. Korth, S. M. Krimigis, R. L. McNutt, J. M. Raines, M. Sarantos, S. C. Solomon, T. Zhang, and T. H. Zurbuchen. 2007. "Modeling of the Interaction Between the Induced Magnetosphere of Venus and the Solar Wind During the MESSENGER Flyby." AGU Fall Meeting Abstracts 7-

    Boardsen, S. A., and J. A. Slavin. 2007. "Search for pick-up ion generated Na+ cyclotron waves at Mercury." Geophysical Research Letters 34 [22106-10.1029/2007GL031504]

    Boardsen, S. A., and J. A. Slavin. 2007. "Search for Na+ Pickup Ion Generated Waves at Mercury." AGU Spring Meeting Abstracts 1-

    Boardsen, S. A., N. Omidi, and J. A. Slavin. 2007. "Thermalization of Na+ Pickup Ions in Mercury's Magnetosheath and Magnetosphere via Hybrid Simulation." AGU Fall Meeting Abstracts 1410-

    Korth, H., B. J. Anderson, M. H. Acuna, J. A. Slavin, and S. A. Boardsen. 2007. "Coherent Electromagnetic Waves Observed Upstream of the Venus Bow Shock Recorded by the MESSENGER Magnetometer Experiment." AGU Fall Meeting Abstracts 8-

    Boardsen, S. A., and J. A. Slavin. 2006. "Examination of MARINER-10 Magnetic Field Data for Heavy Ion Signatures During the Mercury I and III Encounters by Mariner-10." AGU Fall Meeting Abstracts A309-

    Boardsen, S. A., J. L. Green, K. Hashimoto, et al. H. Matsumoto, D. L. Gallagher, and P. A. Webb. 2006. "Is the Linear Mode Conversion Theory viable for generating Kilometric Continuum?" AGU Spring Meeting Abstracts 10-

    Benson, R. F., V. A. Osherovich, J. Fainberg, et al. J. L. Green, S. A. Boardsen, L. N. Garcia, N. Tsyganenko, and B. W. Reinisch. 2006. "RPI/IMAGE Plasma and Magnetic Signatures of Solar Wind/Magnetosphere Interactions." AGU Spring Meeting Abstracts A5-

    Garcia, L. N., J. L. Green, S. A. Boardsen, S. F. Fung, and B. W. Reinisch. 2006. "Auroral Kilometric Radiation Source Region Variations with Season and Solar Cycle." Planetary Radio Emissions VI 231-

    Green, J. L., S. A. Boardsen, L. N. Garcia, and S. F. Fung. 2005. "Role of Density Depletion Ducts on the Generation of Continuum Radiation." AGU Fall Meeting Abstracts 1178-

    Boardsen, S. A., J. L. Green, and D. L. Gallagher. 2005. "Analysis of 'Christmas Tree' radiation patterns seen in Kilometric Continuum detected by RPI on the IMAGE spacecraft." AGU Fall Meeting Abstracts 1177-

    Fung, S. F., J. L. Green, L. Garcia, et al. S. A. Boardsen, X. Shao, and L. C. Tan. 2005. "Correlative Study of High- and Low-Altitude Whistler Wave Observations and Radiation Belt Structure." AGU Spring Meeting Abstracts A5-

    Collier, M. R., T. E. Moore, M. C. Fok, et al. B. Pilkerton, S. Boardsen, and H. Khan. 2005. "Low-energy neutral atom signatures of magnetopause motion in response to southward B-z." JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 110 [10.1029/2004JA010626]

    Green, J. L., and S. A. Boardsen. 2004. "Evolution of the Aurora during the Great Geomagnetic Storm of 1859." AGU Fall Meeting Abstracts A8-

    Boardsen, S. A., J. L. Green, K. Hashimoto, et al. H. Matsumoto, B. R. Sandel, and B. W. Reinisch. 2004. "New Observations of the Non-Thermal Continuum Radiation at the Plasmapause." AGU Fall Meeting Abstracts A1197-

    Boardsen, S. A., J. L. Green, S. F. Fung, L. N. Garcia, and B. Reinisch. 2003. "Intensity Distribution of Plasmaspheric Hiss in the Plasmasphere." AGU Fall Meeting Abstracts 544-

    Green, J. L., S. A. Boardsen, L. Garcia, et al. S. F. Fung, H. U. Frey, S. B. Mende, and B. W. Reinisch. 2002. "Correlations between AKR with Auroral Dynamics and Dipole Tilt Angle." AGU Fall Meeting Abstracts 628-

    Carpenter, D. L., M. A. Spasojevic, T. F. Bell, et al. U. S. Inan, B. W. Reinisch, I. A. Galkin, R. F. Benson, J. L. Green, S. F. Fung, and S. A. Boardsen. 2002. "Small-scale field-aligned plasmaspheric density structures inferred from the Radio Plasma Imager on IMAGE." Journal of Geophysical Research (Space Physics) 107 [1258-10.1029/2001JA009199]

    Green, J. L., S. F. Fung, S. A. Boardsen, R. F. Benson, and B. W. Reinisch. 2002. "Plasma Waves in the Plasmapause Region: Recent Results." AGU Spring Meeting Abstracts -

    Boardsen, S. A., J. L. Green, S. F. Fung, and B. W. Reinisch. 2002. "Characteristics of the Kilometric Continuum Source Region as Observed by the Radio Plasma Imager on IMAGE." AGU Spring Meeting Abstracts A10-

    Rilee, M. L., S. A. Boardsen, M. K. Bhat, and S. A. Curtis. 2001. "A Virtual Principal Investigator for on Board Space Science Data Analysis." AGU Spring Meeting Abstracts 21-

    Reinisch, B. W., X. Huang, D. M. Haines, et al. I. A. Galkin, J. L. Green, R. F. Benson, S. F. Fung, W. W. Taylor, P. H. Reiff, D. L. Gallagher, J.-L. Bougeret, R. Manning, D. L. Carpenter, and S. A. Boardsen. 2001. "First results from the Radio Plasma Imager on IMAGE." Geophysical Research Letters 28 1167-1170 [10.1029/2000GL012398]

    Rilee, M. L., S. A. Curtis, J. C. Ling, et al. D. S. Katz, M. A. Johnson, M. K. Bhat, S. A. Boardsen, and T. W. Atwater. 2001. "MPACT: Architecture and Design of a COTS Science Co-Processor for Space Science Missions." AGU Fall Meeting Abstracts A840-

    Boardsen, S. A., J. L. Green, S. F. Fung, et al. B. W. Reinich, B. R. Sandel, R. R. Anderson, H. Matsumoto, K. Hashimoto, H. Kojima, M. L. Kaiser, and T. Forrester. 2001. "The association of kilometric continuum with plasmaspheric bite-outs: a multi-event study using IMAGE, GEOTAIL and WIND measurements." AGU Fall Meeting Abstracts A766-

    Collier, M. R., T. E. Moore, K. W. Ogilvie, et al. D. Chornay, J. W. Keller, S. Boardsen, J. Burch, B. El Marji, M. C. Fok, S. A. Fuselier, A. G. Ghielmetti, B. L. Giles, D. C. Hamilton, B. L. Peko, J. M. Quinn, E. C. Roelof, T. M. Stephen, G. R. Wilson, and P. Wurz. 2001. "Observations of neutral atoms from the solar wind." Journal of Geophysical Research 106 (A11): 24,893-24,906 [10.1029/2000JA000382]

    Green, J. L., R. F. Benson, S. F. Fung, et al. W. W. Taylor, S. A. Boardsen, and B. W. Reinisch. 2000. "Radio Sounding in the Earth's Magnetosphere." Washington DC American Geophysical Union Geophysical Monograph Series 119 359-

    Green, J. L., R. F. Benson, S. F. Fung, et al. W. W. Taylor, S. A. Boardsen, B. W. Reinisch, D. M. Haines, K. Bibl, G. Cheney, I. A. Galkin, X. Huang, S. H. Myers, G. S. Sales, J.-L. Bougeret, R. Manning, N. Meyer-Vernet, M. Moncuquet, D. L. Carpenter, D. L. Gallagher, and P. H. Reiff. 2000. "Radio plasma imager simulations and measurements." Space Science Reviews 91 361-389

    Eastman, T. E., S. A. Boardsen, S.-H. Chen, S. F. Fung, and R. L. Kessel. 2000. "Configuration of high-latitude and high-altitude boundary layers." Journal of Geophysical Research 105 23221-23238 [10.1029/1999JA900269]

    Boardsen, S. A., T. E. Eastman, T. Sotirelis, and J. L. Green. 2000. "An empirical model of the high-latitude magnetopause." Journal of Geophysical Research 105 23193-23220 [10.1029/1998JA000143]

    Chen, S.-H., S. A. Boardsen, S. F. Fung, et al. J. L. Green, R. L. Kessel, L. C. Tan, T. E. Eastman, and J. D. Craven. 1997. "Exterior and interior polar cusps: Observations from Hawkeye." Journal of Geophysical Research 102 11335-11348 [10.1029/97JA00743]

    Kessel, R. L., S.-H. Chen, J. L. Green, et al. S. F. Fung, S. A. Boardsen, L. C. Tan, T. E. Eastman, J. D. Craven, and L. A. Frank. 1996. "Evidence of high-latitude reconnecting during northward IMF: Hawkeye observations." Geophysical Research Letters 23 583-586 [10.1029/95GL03083]

    Olsen, R. C., L. J. Scott, and S. A. Boardsen. 1994. "Comparison between Liouville's theorem and observed latitudinal distributions of trapped ions in the plasmapause region." Journal of Geophysical Research 99 2191-2203 [10.1029/93JA02776]

    Boardsen, S. A., D. L. Gallagher, D. A. Gurnett, W. K. Peterson, and J. L. Green. 1992. "Funnel-shaped, low-frequency equatorial waves." Journal of Geophysical Research 97 [14967-10.1029/92JA00827]

    Boardsen, S. A., D. A. Gurnett, and W. K. Peterson. 1990. "Double-peaked electrostatic ion cyclotron harmonic waves." Journal of Geophysical Research 95 10591-10598 [10.1029/JA095iA07p10591]

    Peterson, W. K., E. G. Shelley, S. A. Boardsen, et al. D. A. Gurnett, B. G. Ledley, M. Sugiura, and T. E. Moore. 1988. "Transverse ion energization and low-frequency plasma waves in the mid-altitude auroral zone: A case study." J. Geophys. Res. 93 (A10): 11,405-11,428 [10.1029/JA093iA10p11405]

                                                                                                                                                                                            
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