Leon Ofman

Leon Ofman

  • ASTROPHYSICIST
  • 301.286.9913
  • NASA/GSFC
  • Mail Code: 671
  • Greenbelt , MD 20771
  • Employer: CATHOLIC UNIV OF AMERICA
  • Brief Bio

    Prof. Leon Ofman received his B.Sc. in Physics in 1986 and M.Sc. in Physics in 1988 from Tel Aviv University, Israel, and his Ph.D. in Physics in 1992 from the University of Texas at Austin. He held National Research Council Postdoctoral Research Associateship at NASA Goddard Space Flight Center from 1992 to 1994. Since 1994 Prof. Ofman continued working at NASA GSFC, as a contractor via Hughes and Raytheon corporations, and in 2001 he became a Research Associate Professor at Catholic University of America, Associate Professor (2005-2007), and a university affiliate at NASA GSFC to present. From 2007 Prof. Ofman became Visiting Associate Professor at Tel Aviv University. In 2009 Prof. Ofman became Research Professor at CUA’s Department of Physics and Institute for Astrophysics and Computational Sciences (IACS). His main research interests are in solar plasma physics, MHD, waves and instabilities, and kinetic processes related to coronal heating and solar wind acceleration. His main expertise is in numerical modeling of the solar coronal and wind plasma, driven by space based observations. Prof. Ofman has authored and coauthored over 150 publications in solar physics and related fields in refereed journals, and in conference proceeding. Prof. Ofman is the Principal Investigator on NASA and NSF grants supervising postdocs and students that work in solar physics. Prof. Ofman was a member of NASA Science Definition Team for the Solar Probe Plus mission. He is serving as a referee for leading journals in the field, and a reviewer for US and international science funding agencies. Prof. Ofman is a member of the AAS/SPD, AGU, IAU, and COSPAR.

    Selected Publications

    Refereed

    Schmieder, B., P. Mein, N. Mein, et al. P. J. Levens, N. Labrosse, and L. Ofman. 2017. "HαDoppler shifts in a tornado in the solar corona." Astronomy & Astrophysics, 597: A109 [10.1051/0004-6361/201628771]

    Ofman, L., A. Figueroa Vinas, and D. A. Roberts. 2017. "The effects of inhomogeneous proton-α drifts on the heating of the solar wind." Journal of Geophysical Research: Space Physics, 122: [10.1002/2016ja023705]

    Ofman, L., R. E. Denton, J. Bortnik, et al. X. An, A. Glocer, and C. Komar. 2017. "Growth and nonlinear saturation of electromagnetic ion cyclotron waves in multi-ion species magnetospheric plasma." Journal of Geophysical Research: Space Physics, 122: [10.1002/2017ja024172]

    Ofman, L. 2016. "MHD Waves in the Solar Wind (Chapter 14)." Low-Frequency Waves in Space Plasmas, Geophysical Monograph 216, 241-252 [10.1002/9781119055006.ch14]

    Abbo, L., L. Ofman, S. K. Antiochos, et al. V. H. Hansteen, L. Harra, Y.-K. Ko, G. Lapenta, B. Li, P. Riley, L. Strachan, R. von Steiger, and Y.-M. Wang. 2016. "Slow Solar Wind: Observations and Modeling." Space Science Reviews, 201 (1-4): 55-108 [10.1007/s11214-016-0264-1]

    Srivastava, A. K., T. Singh, L. Ofman, and B. N. Dwivedi. 2016. "Inference of magnetic field in the coronal streamer invoking kink wave motions generated by multiple EUV waves." Monthly Notices of the Royal Astronomical Society, 463 (2): 1409-1415 [10.1093/mnras/stw2017]

    Ofman, L., E. Provornikova, L. Abbo, and S. Giordano. 2015. "Three-dimensional multi-fluid model of a coronal streamer belt with a tilted magnetic dipole." Annales Geophysicae, 33 (1): 47-53 [10.5194/angeo-33-47-2015]

    Ozak, N., L. Ofman, and A.-F. Viñas. 2015. "ION HEATING IN INHOMOGENEOUS EXPANDING SOLAR WIND PLASMA: THE ROLE OF PARALLEL AND OBLIQUE ION-CYCLOTRON WAVES." The Astrophysical Journal, 799 (1): 77 [10.1088/0004-637x/799/1/77]

    Maneva, Y. G., L. Ofman, and A. Viñas. 2015. "Relative drifts and temperature anisotropies of protons andαparticles in the expanding solar wind: 2.5D hybrid simulations." Astronomy & Astrophysics, 578: A85 [10.1051/0004-6361/201424401]

    Wang, T., L. Ofman, X. Sun, E. Provornikova, and J. M. Davila. 2015. "EVIDENCE OF THERMAL CONDUCTION SUPPRESSION IN A SOLAR FLARING LOOP BY CORONAL SEISMOLOGY OF SLOW-MODE WAVES." The Astrophysical Journal, 811 (1): L13 [10.1088/2041-8205/811/1/l13]

    Ofman, L., M. Parisi, and A. K. Srivastava. 2015. "Three-dimensional MHD modeling of vertical kink oscillations in an active region plasma curtain." Astronomy & Astrophysics, 582: A75 [10.1051/0004-6361/201425054]

    Zaqarashvili, T. V., I. Zhelyazkov, and L. Ofman. 2015. "STABILITY OF ROTATING MAGNETIZED JETS IN THE SOLAR ATMOSPHERE. I. KELVIN–HELMHOLTZ INSTABILITY." The Astrophysical Journal, 813 (2): 123 [10.1088/0004-637x/813/2/123]

    Ofman, L., K. Knizhnik, T. A. Kucera, and B. Schmieder. 2015. "Nonlinear MHD Waves in a Prominence Foot." Astrophysical Journal, 813: 124 [10.1088/0004-637X/813/2/124]

    Liu, W., and L. Ofman. 2014. "Advances in Observing Various Coronal EUV Waves in the SDO Era and Their Seismological Applications (Invited Review)." Solar Physics, 289 (9): 3233-3277 [10.1007/s11207-014-0528-4]

    Ofman, L., A. Figueroa Vinas, and Y. Maneva. 2014. "Two-dimensional hybrid models of H+-He++expanding solar wind plasma heating." Journal of Geophysical Research: Space Physics, 119 (6): 4223-4238 [10.1002/2013ja019590]

    Uritskiy, V. M., J. M. Davila, N. M. Viall-Kepko, and L. Ofman. 2013. "MEASURING TEMPERATURE-DEPENDENT PROPAGATING DISTURBANCES IN CORONAL FAN LOOPS USING MULTIPLE SDO/AIA CHANNELS AND THE SURFING TRANSFORM TECHNIQUE." ASTROPHYSICAL JOURNAL, 778: [10.1088/0004-637X/778/1/26]

    Kwon, R., M. Kramar, T. Wang, et al. L. Ofman, J. M. Davila, J. Chae, and J. Zhang. 2013. "GLOBAL CORONAL SEISMOLOGY IN THE EXTENDED SOLAR CORONA THROUGH FAST MAGNETOSONIC WAVES OBSERVED BY STEREO SECCHI COR1." ASTROPHYSICAL JOURNAL, 776: [10.1088/0004-637X/776/1/55]

    Wang, T., L. Ofman, and J. M. Davila. 2013. "THREE-DIMENSIONAL MAGNETOHYDRODYNAMIC MODELING OF PROPAGATING DISTURBANCES IN FAN-LIKE CORONAL LOOPS." ASTROPHYSICAL JOURNAL LETTERS, 775: [10.1088/2041-8205/775/1/L23]

    Uritskiy, V. M., J. M. Davila, L. Ofman, and A. J. Coyner. 2013. "STOCHASTIC COUPLING OF SOLAR PHOTOSPHERE AND CORONA." ASTROPHYSICAL JOURNAL, 769: [10.1088/0004-637X/769/1/62]

    Kwon, R., L. Ofman, O. Olmedo, et al. M. Kramar, J. M. Davila, B. J. Thompson, and K. Cho. 2013. "STEREO OBSERVATIONS OF FAST MAGNETOSONIC WAVES IN THE EXTENDED SOLAR CORONA ASSOCIATED WITH EIT/EUV WAVES." ASTROPHYSICAL JOURNAL, 766: [10.1088/0004-637X/766/1/55]

    Gilbert, H. R., A. R. Inglis, M. L. Mays, et al. L. Ofman, B. J. Thompson, and C. A. Young. 2013. "Energy Release from Impacting Prominence Material Following the 2011 June 7 Eruption." The Astrophysical Journal, 776: [L12-10.1088/2041-8205/776/1/L12]

    Ofman, L., and M. Gedalin. 2013. "Two-dimensional hybrid simulations of quasi-perpendicular collisionless shock dynamics: Gyrating downstream ion distributions." Journal of Geophysical Research: Space Physics, 118 (5): 1828-1836 [10.1029/2012ja018188]

    Maneva, Y. G., A. F. Viñas, and L. Ofman. 2013. "Turbulent heating and acceleration of He++ions by spectra of Alfvén-cyclotron waves in the expanding solar wind: 1.5-D hybrid simulations." Journal of Geophysical Research: Space Physics, 118 (6): 2842-2853 [10.1002/jgra.50363]

    Ofman, L., and M. Gedalin. 2013. "Rippled quasi-perpendicular collisionless shocks: Local and global normals." Journal of Geophysical Research: Space Physics, 118 (10): 5999-6006 [10.1002/2013ja018780]

    Wang, T., L. Ofman, J. M. Davila, and Y. Su. 2012. "Growing Transverse Oscillations of a Multistranded Loop Observed by SDO/AIA." The Astrophysical Journal Letters, 751 ( 2): L27 [10.1088/2041-8205/751/2/L27]

    Ofman, L., T. J. Wang, and J. M. Davila. 2012. "Slow Magnetosonic Waves and Fast Flows in Active Region Loops." The Astrophysical Journal, 754: [111-10.1088/0004-637X/754/2/111]

    Liu, W., L. Ofman, N. V. Nitta, et al. M. J. Aschwanden, C. J. Schrijver, A. M. Title, and T. D. Tarbell. 2012. "QUASI-PERIODIC FAST-MODE WAVE TRAINS WITHIN A GLOBAL EUV WAVE AND SEQUENTIAL TRANSVERSE OSCILLATIONS DETECTED BYSDO/AIA." The Astrophysical Journal, 753 (1): 52 [10.1088/0004-637x/753/1/52]

    Israelevich, P., and L. Ofman. 2012. "Hybrid simulation of the shock wave trailing the Moon." Journal of Geophysical Research: Space Physics, 117 (A8): [10.1029/2011ja017358]

    Tian, H., S. W. McIntosh, T. Wang, et al. L. Ofman, B. De Pontieu, D. E. Innes, and H. Peter. 2012. "PERSISTENT DOPPLER SHIFT OSCILLATIONS OBSERVED WITH HINODE /EIS IN THE SOLAR CORONA: SPECTROSCOPIC SIGNATURES OF ALFVÉNIC WAVES AND RECURRING UPFLOWS." The Astrophysical Journal, 759 (2): 144 [10.1088/0004-637x/759/2/144]

    Brief Bio

    Prof. Leon Ofman received his B.Sc. in Physics in 1986 and M.Sc. in Physics in 1988 from Tel Aviv University, Israel, and his Ph.D. in Physics in 1992 from the University of Texas at Austin. He held National Research Council Postdoctoral Research Associateship at NASA Goddard Space Flight Center from 1992 to 1994. Since 1994 Prof. Ofman continued working at NASA GSFC, as a contractor via Hughes and Raytheon corporations, and in 2001 he became a Research Associate Professor at Catholic University of America, Associate Professor (2005-2007), and a university affiliate at NASA GSFC to present. From 2007 Prof. Ofman became Visiting Associate Professor at Tel Aviv University. In 2009 Prof. Ofman became Research Professor at CUA’s Department of Physics and Institute for Astrophysics and Computational Sciences (IACS). His main research interests are in solar plasma physics, MHD, waves and instabilities, and kinetic processes related to coronal heating and solar wind acceleration. His main expertise is in numerical modeling of the solar coronal and wind plasma, driven by space based observations. Prof. Ofman has authored and coauthored over 150 publications in solar physics and related fields in refereed journals, and in conference proceeding. Prof. Ofman is the Principal Investigator on NASA and NSF grants supervising postdocs and students that work in solar physics. Prof. Ofman was a member of NASA Science Definition Team for the Solar Probe Plus mission. He is serving as a referee for leading journals in the field, and a reviewer for US and international science funding agencies. Prof. Ofman is a member of the AAS/SPD, AGU, IAU, and COSPAR.

    Selected Publications

    Refereed

    Schmieder, B., P. Mein, N. Mein, et al. P. J. Levens, N. Labrosse, and L. Ofman. 2017. "HαDoppler shifts in a tornado in the solar corona." Astronomy & Astrophysics 597 A109 [10.1051/0004-6361/201628771]

    Ofman, L., A. Figueroa Vinas, and D. A. Roberts. 2017. "The effects of inhomogeneous proton-α drifts on the heating of the solar wind." Journal of Geophysical Research: Space Physics 122 [10.1002/2016ja023705]

    Ofman, L., R. E. Denton, J. Bortnik, et al. X. An, A. Glocer, and C. Komar. 2017. "Growth and nonlinear saturation of electromagnetic ion cyclotron waves in multi-ion species magnetospheric plasma." Journal of Geophysical Research: Space Physics 122 [10.1002/2017ja024172]

    Ofman, L. 2016. "MHD Waves in the Solar Wind (Chapter 14)." Low-Frequency Waves in Space Plasmas, Geophysical Monograph 216 241-252 [10.1002/9781119055006.ch14]

    Abbo, L., L. Ofman, S. K. Antiochos, et al. V. H. Hansteen, L. Harra, Y.-K. Ko, G. Lapenta, B. Li, P. Riley, L. Strachan, R. von Steiger, and Y.-M. Wang. 2016. "Slow Solar Wind: Observations and Modeling." Space Science Reviews 201 (1-4): 55-108 [10.1007/s11214-016-0264-1]

    Srivastava, A. K., T. Singh, L. Ofman, and B. N. Dwivedi. 2016. "Inference of magnetic field in the coronal streamer invoking kink wave motions generated by multiple EUV waves." Monthly Notices of the Royal Astronomical Society 463 (2): 1409-1415 [10.1093/mnras/stw2017]

    Ofman, L., E. Provornikova, L. Abbo, and S. Giordano. 2015. "Three-dimensional multi-fluid model of a coronal streamer belt with a tilted magnetic dipole." Annales Geophysicae 33 (1): 47-53 [10.5194/angeo-33-47-2015]

    Ozak, N., L. Ofman, and A.-F. Viñas. 2015. "ION HEATING IN INHOMOGENEOUS EXPANDING SOLAR WIND PLASMA: THE ROLE OF PARALLEL AND OBLIQUE ION-CYCLOTRON WAVES." The Astrophysical Journal 799 (1): 77 [10.1088/0004-637x/799/1/77]

    Maneva, Y. G., L. Ofman, and A. Viñas. 2015. "Relative drifts and temperature anisotropies of protons andαparticles in the expanding solar wind: 2.5D hybrid simulations." Astronomy & Astrophysics 578 A85 [10.1051/0004-6361/201424401]

    Wang, T., L. Ofman, X. Sun, E. Provornikova, and J. M. Davila. 2015. "EVIDENCE OF THERMAL CONDUCTION SUPPRESSION IN A SOLAR FLARING LOOP BY CORONAL SEISMOLOGY OF SLOW-MODE WAVES." The Astrophysical Journal 811 (1): L13 [10.1088/2041-8205/811/1/l13]

    Ofman, L., M. Parisi, and A. K. Srivastava. 2015. "Three-dimensional MHD modeling of vertical kink oscillations in an active region plasma curtain." Astronomy & Astrophysics 582 A75 [10.1051/0004-6361/201425054]

    Zaqarashvili, T. V., I. Zhelyazkov, and L. Ofman. 2015. "STABILITY OF ROTATING MAGNETIZED JETS IN THE SOLAR ATMOSPHERE. I. KELVIN–HELMHOLTZ INSTABILITY." The Astrophysical Journal 813 (2): 123 [10.1088/0004-637x/813/2/123]

    Ofman, L., K. Knizhnik, T. A. Kucera, and B. Schmieder. 2015. "Nonlinear MHD Waves in a Prominence Foot." Astrophysical Journal 813 124 [10.1088/0004-637X/813/2/124]

    Liu, W., and L. Ofman. 2014. "Advances in Observing Various Coronal EUV Waves in the SDO Era and Their Seismological Applications (Invited Review)." Solar Physics 289 (9): 3233-3277 [10.1007/s11207-014-0528-4]

    Ofman, L., A. Figueroa Vinas, and Y. Maneva. 2014. "Two-dimensional hybrid models of H+-He++expanding solar wind plasma heating." Journal of Geophysical Research: Space Physics 119 (6): 4223-4238 [10.1002/2013ja019590]

    Uritskiy, V. M., J. M. Davila, N. M. Viall-Kepko, and L. Ofman. 2013. "MEASURING TEMPERATURE-DEPENDENT PROPAGATING DISTURBANCES IN CORONAL FAN LOOPS USING MULTIPLE SDO/AIA CHANNELS AND THE SURFING TRANSFORM TECHNIQUE." ASTROPHYSICAL JOURNAL 778 [10.1088/0004-637X/778/1/26]

    Kwon, R., M. Kramar, T. Wang, et al. L. Ofman, J. M. Davila, J. Chae, and J. Zhang. 2013. "GLOBAL CORONAL SEISMOLOGY IN THE EXTENDED SOLAR CORONA THROUGH FAST MAGNETOSONIC WAVES OBSERVED BY STEREO SECCHI COR1." ASTROPHYSICAL JOURNAL 776 [10.1088/0004-637X/776/1/55]

    Wang, T., L. Ofman, and J. M. Davila. 2013. "THREE-DIMENSIONAL MAGNETOHYDRODYNAMIC MODELING OF PROPAGATING DISTURBANCES IN FAN-LIKE CORONAL LOOPS." ASTROPHYSICAL JOURNAL LETTERS 775 [10.1088/2041-8205/775/1/L23]

    Uritskiy, V. M., J. M. Davila, L. Ofman, and A. J. Coyner. 2013. "STOCHASTIC COUPLING OF SOLAR PHOTOSPHERE AND CORONA." ASTROPHYSICAL JOURNAL 769 [10.1088/0004-637X/769/1/62]

    Kwon, R., L. Ofman, O. Olmedo, et al. M. Kramar, J. M. Davila, B. J. Thompson, and K. Cho. 2013. "STEREO OBSERVATIONS OF FAST MAGNETOSONIC WAVES IN THE EXTENDED SOLAR CORONA ASSOCIATED WITH EIT/EUV WAVES." ASTROPHYSICAL JOURNAL 766 [10.1088/0004-637X/766/1/55]

    Gilbert, H. R., A. R. Inglis, M. L. Mays, et al. L. Ofman, B. J. Thompson, and C. A. Young. 2013. "Energy Release from Impacting Prominence Material Following the 2011 June 7 Eruption." The Astrophysical Journal 776 [L12-10.1088/2041-8205/776/1/L12]

    Ofman, L., and M. Gedalin. 2013. "Two-dimensional hybrid simulations of quasi-perpendicular collisionless shock dynamics: Gyrating downstream ion distributions." Journal of Geophysical Research: Space Physics 118 (5): 1828-1836 [10.1029/2012ja018188]

    Maneva, Y. G., A. F. Viñas, and L. Ofman. 2013. "Turbulent heating and acceleration of He++ions by spectra of Alfvén-cyclotron waves in the expanding solar wind: 1.5-D hybrid simulations." Journal of Geophysical Research: Space Physics 118 (6): 2842-2853 [10.1002/jgra.50363]

    Ofman, L., and M. Gedalin. 2013. "Rippled quasi-perpendicular collisionless shocks: Local and global normals." Journal of Geophysical Research: Space Physics 118 (10): 5999-6006 [10.1002/2013ja018780]

    Wang, T., L. Ofman, J. M. Davila, and Y. Su. 2012. "Growing Transverse Oscillations of a Multistranded Loop Observed by SDO/AIA." The Astrophysical Journal Letters 751 ( 2): L27 [10.1088/2041-8205/751/2/L27]

    Ofman, L., T. J. Wang, and J. M. Davila. 2012. "Slow Magnetosonic Waves and Fast Flows in Active Region Loops." The Astrophysical Journal 754 [111-10.1088/0004-637X/754/2/111]

    Liu, W., L. Ofman, N. V. Nitta, et al. M. J. Aschwanden, C. J. Schrijver, A. M. Title, and T. D. Tarbell. 2012. "QUASI-PERIODIC FAST-MODE WAVE TRAINS WITHIN A GLOBAL EUV WAVE AND SEQUENTIAL TRANSVERSE OSCILLATIONS DETECTED BYSDO/AIA." The Astrophysical Journal 753 (1): 52 [10.1088/0004-637x/753/1/52]

    Israelevich, P., and L. Ofman. 2012. "Hybrid simulation of the shock wave trailing the Moon." Journal of Geophysical Research: Space Physics 117 (A8): [10.1029/2011ja017358]

    Tian, H., S. W. McIntosh, T. Wang, et al. L. Ofman, B. De Pontieu, D. E. Innes, and H. Peter. 2012. "PERSISTENT DOPPLER SHIFT OSCILLATIONS OBSERVED WITH HINODE /EIS IN THE SOLAR CORONA: SPECTROSCOPIC SIGNATURES OF ALFVÉNIC WAVES AND RECURRING UPFLOWS." The Astrophysical Journal 759 (2): 144 [10.1088/0004-637x/759/2/144]

                                                                                                                                                                                            
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