Dr. Tongjiang Wang is a Research Associate at Catholic University of America, working as a contractor at NASA Goddard Space Flight Center since 2007. Dr. Wang’s research includes the dynamics, oscillations and flare activity in solar active region corona using EUV spectroscopic and imaging observations from various space missions (e.g. SOHO, STEREO, Hinode, SDO and IRIS). He has authored and coauthored more than 50 publications on solar physics in refereed journals. He has been invited to give several review talks in international conferences. He has been a PI or Co-I of several NASA grants. He served as a referee for various leading journals in the field such as ApJ, A&A, Solar Physics, JGR, PASJ, New Astronomy,etc., and a reviewer for NASA proposals. He is a member of Solar Physics Division of American Astronomical Society, and a member of American Geophysical Union.
Oscillations and waves in coronal loops
Imaging and spectral detections of various kinds of waves and oscillation modes, measurement of their physical properties, understanding their excitation, propagation and damping mechanism by MHD simulations as well as exploration of their possible applications in coronal seismology, i.e., to determine the unknown physical parameters based on the observations and theories.
Impulsive activity in solar corona
Magnetic energy buildup and release mechanisms for impulsive events from small scale (e.g., jets and microflares) to large scale (e.g., filament eruption, flares and CMEs). Search of the evidence for magnetic energy transfer from the photosphere into the corona (e.g. formation of filaments seen in Hα and EUV, and sigmoid structure in soft X-ray). Exploration of their trigger mechanism by comparing observational signatures with the model prediction. Exploration of the evidence for magnetic reconnection including changes of coronal magnetic structure and topology and the direct detection of magnetic reconnection inflow and outflows using the multi-wavelength observations. Measurement of physical properties (e.g., temperature and density) of coronal structure from EUV spectral data and diagnosis of their heating and cooling processes.
Magnetic field evolution in active regions
Exploration of the responses of the coronal structure and emissions in EUV and X-rays to the photospheric magnetic field evolution such as the roles of magnetic emergence, flux cancellation, shear motion etc.
Reconstruction of the Electron Density Distribution in
the Solar Corona
To reconstruct the 3D electron density distribution for each solar rotation since 2007 using the spherically symmetric inversion method from two week's polarized brightness (pB) radiance using STEREO/COR1 observations.To study long-term and short-term variations of the electron density of the inner corona within 1.5-4 solar radii and their relationship with the evolution of the magnetic flux on the photosphere and the CME mass and occurrance rate.
5/2007
-
Present
Research Associate
Catholic University of America , Physics Department,
620 Michigan Ave., NE, Room 200 Hannan Hall, Washington, DC 20064, and
NASA Goddard Space Flight Center at Greenbelt, MD 2077
1/2006
-
4/2007
Research scientist
Physics Department of Montana State University,
Bozeman, MT 59717-3840
6/2001
-
12/2005
Postdoctoral Researcher
Max-Planck Institute for Sonnensystemforschung,
Katlenburg-Lindau, Germany
6/2000
-
3/2001
Postdoctoral Fellowship
Kwasan Observatory, Kyoto University,
Kyoto, Japan
3/2000
-
5/2000
Associate Research Professor
Chinese National Astronomical Observatories,
Beijing, China
3/1998
-
3/2000
Assistant researcher
Chinese National Astronomical Observatories,
Beijing, China
1987,9-1991,9 Astrophysics, Astronomy Dept., Nanjing University, B.S.
1991,9-1994,9 Astrophysics, Astronomy Dept., Nanjing University, M.S.
1994,9-1998,3 Astrophysics, Beijing Astronomical Observatory,Chinese Academy of Sciences, Ph.D.
Refereed
Wang, T., N. L. Reginald, J. M. Davila, O. C. St Cyr, and W. T. Thompson. 2017. "Variation of Coronal Activity from the Minimum to
Maximum of Solar Cycle 24 using Three Dimensional
Coronal Electron Density Reconstructions from
STEREO/COR1."
Solar Physics,
292
(8):
97 (32 pp)
[10.1007/s11207-017-1130-3]
Dennis, B. R., A. K. Tolbert, A. Inglis, et al. 2017. "Detection and Interpretation of Long-lived X-Ray Quasi-periodic Pulsations in the X-class Solar Flare on 2013 May 14."
The Astrophysical Journal,
836
(1):
84
[10.3847/1538-4357/836/1/84]
Tian, H., P. R. Young, K. K. Reeves, et al. 2016. "GLOBAL SAUSAGE OSCILLATION OF SOLAR FLARE LOOPS DETECTED BY THEINTERFACE REGION IMAGING SPECTROGRAPH."
The Astrophysical Journal,
823
(1):
L16
[10.3847/2041-8205/823/1/l16]
Hariharan, K., R. Ramesh, C. Kathiravan, and T. Wang. 2016. "Simultaneous Near-Sun Observations of a Moving Type IV Radio Burst and the Associated White-Light Coronal Mass Ejection."
Solar Physics,
291
(5):
1405-1416
[10.1007/s11207-016-0918-x]
Wang, T. J. 2016. "Waves in Solar Coronal Loops."
Keiling/Low-Frequency Waves in Space Plasmas,
216:
395-418
[10.1002/9781119055006.ch23]
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]
Sasikumar Raja, K., R. Ramesh, K. Hariharan, C. Kathiravan, and T. J. Wang. 2014. "AN ESTIMATE OF THE MAGNETIC FIELD STRENGTH ASSOCIATED WITH A SOLAR CORONAL MASS EJECTION FROM LOW FREQUENCY RADIO OBSERVATIONS."
The Astrophysical Journal,
796
(1):
56
[10.1088/0004-637x/796/1/56]
Su, Y., P. Gömöry, A. Veronig, et al. 2014. "SOLAR MAGNETIZED TORNADOES: ROTATIONAL MOTION IN A TORNADO-LIKE PROMINENCE."
The Astrophysical Journal,
785
(1):
L2
[10.1088/2041-8205/785/1/l2]
Wang, T., and J. M. Davila. 2014. "Validation of Spherically Symmetric Inversion by Use of a Tomographically Reconstructed Three-Dimensional Electron Density of the Solar Corona."
SOLAR PHYSICS,
289:
3723-3745
[10.1007/s11207-014-0556-0]
Ramesh, R., P. Kishore, S. M. Mulay, et al. 2013. "LOW-FREQUENCY OBSERVATIONS OF DRIFTING, NON-THERMAL CONTINUUM RADIO EMISSION ASSOCIATED WITH THE SOLAR CORONAL MASS EJECTIONS."
The Astrophysical Journal,
778
(1):
30
[10.1088/0004-637x/778/1/30]
Su, Y., A. M. Veronig, G. D. Holman, et al. 2013. "Imaging coronal magnetic-field reconnection in a solar flare."
Nature Physics,
9
(8):
489-493
[10.1038/nphys2675]
Kwon, R., M. Kramar, T. Wang, et al. 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]
Tian, H., S. W. McIntosh, T. Wang, et al. 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]
Su, Y., T. Wang, A. Veronig, M. Temmer, and W. Gan. 2012. "SOLAR MAGNETIZED “TORNADOES:” RELATION TO FILAMENTS."
The Astrophysical Journal,
756
(2):
L41
[10.1088/2041-8205/756/2/l41]
Su, Y., B. R. Dennis, G. D. Holman, et al. 2012. "OBSERVATIONS OF A TWO-STAGE SOLAR ERUPTIVE EVENT (SEE): EVIDENCE FOR SECONDARY HEATING."
The Astrophysical Journal,
746
(1):
L5
[10.1088/2041-8205/746/1/l5]
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]
Wang, T., L. Ofman, and J. M. Davila. 2012. "Spectroscopic Diagnosis of Propagating Disturbances in Coronal Loops: Waves or flows?"
Fifth Hinode Science Meeting,
456:
91-.
Wang, T., L. Ofman, and J. M. Davila. 2012. "Propagating Intensity Disturbances in Fan-like Coronal Loops: Flows or Waves?"
4th Hinode Science Meeting: Unsolved Problems and Recent Insights,
455:
227-.
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]
Wang, T., R. J. Thomas, J. W. Brosius, et al. 2011. "UNDERFLIGHT CALIBRATION OF SOHO /CDS AND HINODE /EIS WITH EUNIS-07."
The Astrophysical Journal Supplement Series,
197
(2):
32
[10.1088/0067-0049/197/2/32]
Liu, R., T.-J. Wang, J. Lee, et al. 2011. "Observing the reconnection region in a transequatorial loop system."
Res. Astron. Astrophys.,
11
(10):
1209-1228
[10.1088/1674-4527/11/10/009]
Wang, T. 2011. "Standing Slow-Mode Waves in Hot Coronal Loops: Observations, Modeling, and Coronal Seismology."
Space Sci Rev,
158
(2-4):
397-419
[10.1007/s11214-010-9716-1]
Liu, R., J. Lee, T. Wang, et al. 2010. "A RECONNECTING CURRENT SHEET IMAGED IN A SOLAR FLARE."
The Astrophysical Journal,
723
(1):
L28-L33
[10.1088/2041-8205/723/1/l28]
Wang, T., J. W. Brosius, R. J. Thomas, D. M. Rabin, and J. M. Davila. 2010. "ABSOLUTE RADIOMETRIC CALIBRATION OF THE EUNIS-06 170-205 Å CHANNEL AND CALIBRATION UPDATE FOR CORONAL DIAGNOSTIC SPECTROMETER/NORMAL-INCIDENCE SPECTROMETER."
The Astrophysical Journal Supplement Series,
186
(2):
222-232
[10.1088/0067-0049/186/2/222]
Wang, T. J., L. Ofman, J. M. Davila, and J. T. Mariska. 2009. "Hinode/EIS observations of propagating low-frequency slow magnetoacoustic waves in fan-like coronal loops."
A&A,
503
(3):
L25-L28
[10.1051/0004-6361/200912534]
Liu, W., T.-J. Wang, B. R. Dennis, and G. D. Holman. 2009. "EPISODIC X-RAY EMISSION ACCOMPANYING THE ACTIVATION OF AN ERUPTIVE PROMINENCE: EVIDENCE OF EPISODIC MAGNETIC RECONNECTION."
The Astrophysical Journal,
698
(1):
632-640
[10.1088/0004-637x/698/1/632]
Wang, T. J., L. Ofman, and J. M. Davila. 2009. "PROPAGATING SLOW MAGNETOACOUSTIC WAVES IN CORONAL LOOPS OBSERVED BY HINODE /EIS."
The Astrophysical Journal,
696
(2):
1448-1460
[10.1088/0004-637x/696/2/1448]
Wang, T. J., S. K. Solanki, and M. Selwa. 2008. "Identification of different types of kink modes in coronal loops: principles and application to TRACE results."
A&A,
489
(3):
1307-1317
[10.1051/0004-6361:200810230]
Goossens, M., I. Arregui, J. L. Ballester, and T. J. Wang. 2008. "Analytic approximate seismology of transversely oscillating coronal loops."
A&A,
484
(3):
851-857
[10.1051/0004-6361:200809728]
Ofman, L., and T. J. Wang. 2008. "Hinode observations of transverse waves with flows in coronal loops."
A&A,
482
(2):
L9-L12
[10.1051/0004-6361:20079340]
Non-Refereed
Wang, T., L. Ofman, X. Sun, E. Provornikova, and J. M. Davila. 2015. "Evidence of thermal conduction suppression in hot coronal loops: supplementary results."
Proceedings of the International Astronomical Union
11
(S320):
202-208
[10.1017/s1743921316000326]
Wang, T., W. Liu, L. Ofman, and J. M. Davila. 2012. "Slow-Mode Oscillations of Hot Loops Excited at Flaring Footpoints."
The Fifth Hinode Science Meeting. ASP Conference Series, Astronomical Society of the Pacific
456:
127.
Wang, T., L. Sui, and J. Qiu. 2009. "Direct Observation of High-Speed Reconnection Outflows With SOHO/SUMER, TRACE and RHESSI."
The Second Hinode Science Meeting: Beyond Discovery-Toward Understanding ASP Conference Series, Astronomical Society of the Pacific
415:
447.
Wang, T., L. Ofman, and J. M. Davila. 2009. "Hinode/EIS Observations of Propagating Slow Magnetoacoustic Waves in a Coronal Loop."
Proceeding of the Second Hinode Science Meeting: Beyond Discovery-Toward Understanding, ASP Conference Series, Astronomical Society of the Pacific
415:
28.
Refereed
Wang, T., N. L. Reginald, J. M. Davila, O. C. St Cyr, and W. T. Thompson. 2017. "Variation of Coronal Activity from the Minimum to
Maximum of Solar Cycle 24 using Three Dimensional
Coronal Electron Density Reconstructions from
STEREO/COR1."
Solar Physics
292
(8):
97 (32 pp)
[10.1007/s11207-017-1130-3]
Dennis, B. R., A. K. Tolbert, A. Inglis, et al. 2017. "Detection and Interpretation of Long-lived X-Ray Quasi-periodic Pulsations in the X-class Solar Flare on 2013 May 14."
The Astrophysical Journal
836
(1):
84
[10.3847/1538-4357/836/1/84]
Tian, H., P. R. Young, K. K. Reeves, et al. 2016. "GLOBAL SAUSAGE OSCILLATION OF SOLAR FLARE LOOPS DETECTED BY THEINTERFACE REGION IMAGING SPECTROGRAPH."
The Astrophysical Journal
823
(1):
L16
[10.3847/2041-8205/823/1/l16]
Hariharan, K., R. Ramesh, C. Kathiravan, and T. Wang. 2016. "Simultaneous Near-Sun Observations of a Moving Type IV Radio Burst and the Associated White-Light Coronal Mass Ejection."
Solar Physics
291
(5):
1405-1416
[10.1007/s11207-016-0918-x]
Wang, T. J. 2016. "Waves in Solar Coronal Loops."
Keiling/Low-Frequency Waves in Space Plasmas
216
395-418
[10.1002/9781119055006.ch23]
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]
Sasikumar Raja, K., R. Ramesh, K. Hariharan, C. Kathiravan, and T. J. Wang. 2014. "AN ESTIMATE OF THE MAGNETIC FIELD STRENGTH ASSOCIATED WITH A SOLAR CORONAL MASS EJECTION FROM LOW FREQUENCY RADIO OBSERVATIONS."
The Astrophysical Journal
796
(1):
56
[10.1088/0004-637x/796/1/56]
Su, Y., P. Gömöry, A. Veronig, et al. 2014. "SOLAR MAGNETIZED TORNADOES: ROTATIONAL MOTION IN A TORNADO-LIKE PROMINENCE."
The Astrophysical Journal
785
(1):
L2
[10.1088/2041-8205/785/1/l2]
Wang, T., and J. M. Davila. 2014. "Validation of Spherically Symmetric Inversion by Use of a Tomographically Reconstructed Three-Dimensional Electron Density of the Solar Corona."
SOLAR PHYSICS
289
3723-3745
[10.1007/s11207-014-0556-0]
Ramesh, R., P. Kishore, S. M. Mulay, et al. 2013. "LOW-FREQUENCY OBSERVATIONS OF DRIFTING, NON-THERMAL CONTINUUM RADIO EMISSION ASSOCIATED WITH THE SOLAR CORONAL MASS EJECTIONS."
The Astrophysical Journal
778
(1):
30
[10.1088/0004-637x/778/1/30]
Su, Y., A. M. Veronig, G. D. Holman, et al. 2013. "Imaging coronal magnetic-field reconnection in a solar flare."
Nature Physics
9
(8):
489-493
[10.1038/nphys2675]
Kwon, R., M. Kramar, T. Wang, et al. 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]
Tian, H., S. W. McIntosh, T. Wang, et al. 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]
Su, Y., T. Wang, A. Veronig, M. Temmer, and W. Gan. 2012. "SOLAR MAGNETIZED “TORNADOES:” RELATION TO FILAMENTS."
The Astrophysical Journal
756
(2):
L41
[10.1088/2041-8205/756/2/l41]
Su, Y., B. R. Dennis, G. D. Holman, et al. 2012. "OBSERVATIONS OF A TWO-STAGE SOLAR ERUPTIVE EVENT (SEE): EVIDENCE FOR SECONDARY HEATING."
The Astrophysical Journal
746
(1):
L5
[10.1088/2041-8205/746/1/l5]
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]
Wang, T., L. Ofman, and J. M. Davila. 2012. "Spectroscopic Diagnosis of Propagating Disturbances in Coronal Loops: Waves or flows?"
Fifth Hinode Science Meeting
456
91-
Wang, T., L. Ofman, and J. M. Davila. 2012. "Propagating Intensity Disturbances in Fan-like Coronal Loops: Flows or Waves?"
4th Hinode Science Meeting: Unsolved Problems and Recent Insights
455
227-
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]
Wang, T., R. J. Thomas, J. W. Brosius, et al. 2011. "UNDERFLIGHT CALIBRATION OF SOHO /CDS AND HINODE /EIS WITH EUNIS-07."
The Astrophysical Journal Supplement Series
197
(2):
32
[10.1088/0067-0049/197/2/32]
Liu, R., T.-J. Wang, J. Lee, et al. 2011. "Observing the reconnection region in a transequatorial loop system."
Res. Astron. Astrophys.
11
(10):
1209-1228
[10.1088/1674-4527/11/10/009]
Wang, T. 2011. "Standing Slow-Mode Waves in Hot Coronal Loops: Observations, Modeling, and Coronal Seismology."
Space Sci Rev
158
(2-4):
397-419
[10.1007/s11214-010-9716-1]
Liu, R., J. Lee, T. Wang, et al. 2010. "A RECONNECTING CURRENT SHEET IMAGED IN A SOLAR FLARE."
The Astrophysical Journal
723
(1):
L28-L33
[10.1088/2041-8205/723/1/l28]
Wang, T., J. W. Brosius, R. J. Thomas, D. M. Rabin, and J. M. Davila. 2010. "ABSOLUTE RADIOMETRIC CALIBRATION OF THE EUNIS-06 170-205 Å CHANNEL AND CALIBRATION UPDATE FOR CORONAL DIAGNOSTIC SPECTROMETER/NORMAL-INCIDENCE SPECTROMETER."
The Astrophysical Journal Supplement Series
186
(2):
222-232
[10.1088/0067-0049/186/2/222]
Wang, T. J., L. Ofman, J. M. Davila, and J. T. Mariska. 2009. "Hinode/EIS observations of propagating low-frequency slow magnetoacoustic waves in fan-like coronal loops."
A&A
503
(3):
L25-L28
[10.1051/0004-6361/200912534]
Liu, W., T.-J. Wang, B. R. Dennis, and G. D. Holman. 2009. "EPISODIC X-RAY EMISSION ACCOMPANYING THE ACTIVATION OF AN ERUPTIVE PROMINENCE: EVIDENCE OF EPISODIC MAGNETIC RECONNECTION."
The Astrophysical Journal
698
(1):
632-640
[10.1088/0004-637x/698/1/632]
Wang, T. J., L. Ofman, and J. M. Davila. 2009. "PROPAGATING SLOW MAGNETOACOUSTIC WAVES IN CORONAL LOOPS OBSERVED BY HINODE /EIS."
The Astrophysical Journal
696
(2):
1448-1460
[10.1088/0004-637x/696/2/1448]
Wang, T. J., S. K. Solanki, and M. Selwa. 2008. "Identification of different types of kink modes in coronal loops: principles and application to TRACE results."
A&A
489
(3):
1307-1317
[10.1051/0004-6361:200810230]
Goossens, M., I. Arregui, J. L. Ballester, and T. J. Wang. 2008. "Analytic approximate seismology of transversely oscillating coronal loops."
A&A
484
(3):
851-857
[10.1051/0004-6361:200809728]
Ofman, L., and T. J. Wang. 2008. "Hinode observations of transverse waves with flows in coronal loops."
A&A
482
(2):
L9-L12
[10.1051/0004-6361:20079340]
Non-Refereed
Wang, T., L. Ofman, X. Sun, E. Provornikova, and J. M. Davila. 2015. "Evidence of thermal conduction suppression in hot coronal loops: supplementary results."
Proceedings of the International Astronomical Union
11
(S320):
202-208
[10.1017/s1743921316000326]
Wang, T., W. Liu, L. Ofman, and J. M. Davila. 2012. "Slow-Mode Oscillations of Hot Loops Excited at Flaring Footpoints."
The Fifth Hinode Science Meeting. ASP Conference Series, Astronomical Society of the Pacific
456
127
Wang, T., L. Sui, and J. Qiu. 2009. "Direct Observation of High-Speed Reconnection Outflows With SOHO/SUMER, TRACE and RHESSI."
The Second Hinode Science Meeting: Beyond Discovery-Toward Understanding ASP Conference Series, Astronomical Society of the Pacific
415
447
Wang, T., L. Ofman, and J. M. Davila. 2009. "Hinode/EIS Observations of Propagating Slow Magnetoacoustic Waves in a Coronal Loop."
Proceeding of the Second Hinode Science Meeting: Beyond Discovery-Toward Understanding, ASP Conference Series, Astronomical Society of the Pacific
415
28
