Chang Liu carried out solar physics research on Flare-related Changes in Magnetic Field and Sunspot Structure, Circular-ribbon Flares, Hard X-ray Imaging and Spectroscopy, Solar Flare Forecasting, and Miscellaneous Topics (jets, D3 flares, sigmoids, Moreton waves, microflares, etc.). He served as PI of 6 federal grants. He transferred 2 new PI federal grants to colleagues in mid 2021, as he changed career path.

Full List of Chang Liu's Publications in Solar Physics at ADS Public Library

Circular-ribbon Flares:

• Liu, C., Prasad, A., Lee, J., & Wang, H. 2020, An Eruptive Circular-ribbon Flare with Extended Remote Brightenings, ApJ, 899, 34

• Liu, C., Lee, J., & Wang, H. 2019, The Eruption of Outer Spine-Like Loops Leading to A Double-Stage Circular-Ribbon Flare, ApJ, 883, 47

• Liu, C., Deng, N., Liu, R., Lee, J., Pariat, E., Wiegelmann, T., Liu, Y., Kleint, L., & Wang, H. 2015, A Circular-ribbon Solar Flare Following an Asymmetric Filament Eruption, ApJ Letters, 812, L19

Flare-related Changes in Magnetic Field and Sunspot Structure:

• Liu, C., Cao, W., Chae, J., Ahn, K., Choudhary, D. P., Lee, J., Liu, R., Deng, N., Wang, J., & Wang, H. 2018, Evolution of Photospheric Vector Magnetic Field Associated with Moving Flare Ribbons as Seen by GST, ApJ, 869, 21

• Liu, C., Xu, Y., Cao, W., Deng, N., Lee, J., Hudson, H.S., Gary, D.E., Wang, J., Jing, J., & Wang, H. 2016, Flare differentially rotates sunspot on Sun's surface, Nature Communications, 7, 13104 [ADS]

• Liu, C., Deng, N., Lee J., Wiegelmann, T., Jiang C., Dennis B. R., Su Y., Donea A. & Wang H. 2014, Three-dimensional Magnetic Restructuring in Two Homologous Solar Flares in the Seismically Active NOAA AR 11283, ApJ, 795, 128

• Liu, C., Deng N., Lee, J., Wiegelmann T., Moore, R.L., & Wang, H. 2013, Evidence for Solar Tether-cutting Magnetic Reconnection from Coronal Field Extrapolations, ApJ Letters, 778, L36(7pp)

• Liu, C., Deng, N., Liu, R., Lee, J., Wiegelmann, T., Jing, J., Xu, Y., Wang, S. & Wang, H. 2012, Rapid Changes of Photospheric Magnetic Field After Tether-cutting Reconnection and Magnetic Implosion, ApJ Letters, 745, L4

• Liu, C., Deng, N., Liu, Y., Falconer, D., Goode, P. R., Denker, C. & Wang, H. 2005, Rapid Change of Delta Spot Structure Associated with Seven Major Flares, ApJ, 622, 722

Solar Flare Forecasting:

• Liu, C., Deng, N., Wang, J. T.L., & Wang, H. 2017, Predicting Solar Flares Using SDO/HMI Vector Magnetic Data Product and Random Forest Algorithm, ApJ, 843, 104

Hard X-ray Imaging and Spectroscopy:

• Liu, C., Lee, J., Jing, J., Liu, R., Deng, N. & Wang, H. 2010, Motions of Hard X-ray Sources During an Asymmetric Eruption, ApJ Letters, 721, L193

• Liu, C. & Wang, H. 2009, Reconnection Electric Field and Hardness of X-ray Emission of Solar Flares, ApJ Letters, 696, L27

• Liu, C., Lee, J., Jing, J., Gary, D. E. & Wang, H. 2008, The Spatial Distribution of Hard X-Ray Spectral Index and Local Magnetic Reconnection Rate, ApJ Letters, 672, L69

• Liu, C., Lee, J., Gary, D. E. & Wang, H. 2007, The Ribbon-Like Hard X-Ray Emission in a Sigmoidal Solar Active Region, ApJ Letters, 658, L127 (Also see RHESSI Science Nuggets #40; RHESSI's Tenth Anniversary)

Miscellaneous:

• Liu, C., Xu, Y., Deng, N., Lee, J., Zhang, J., Choudhary, D. P. & Wang, H. 2013, He I D3 Observation of the 1984 May 22 M6.3 Solar Flare, ApJ, 774, 60(9pp)

• Liu, C., Deng, N., Liu, R., Ugarte-Urra, I., Wang, S. & Wang, H. 2011, A Standard-to-Blowout Jet, ApJ Letters, 735, L18

• Liu, C., Lee, J., Karlicky, M., Choudhary, D. P., Deng, N. & Wang, H. 2009, The Successive Solar Flares and Coronal Mass Ejections on 2005 September 13, ApJ, 703, 757

• Liu, C., Lee, J., Yurchyshyn, V., Deng, N., Cho, K., Karlicky, M. & Wang, H. 2007, The Eruption from a Sigmoidal Solar Active Region on 2005 May 13, ApJ, 669, 1372

• Liu, C., Lee, J., Deng, N., Gary, D. E. & Wang, H. 2006, Large-Scale Activities Associated with the 2003 October 29 X10 Flare, ApJ, 642, 1205

• Liu, C., Qiu, J., Gary, D. E., Krucker, S. & Wang, H. 2004, Studies of Microflares in RHESSI Hard X-ray, Big Bear Solar Observatory H-alpha and Michelson Doppler Imager Magnetograms, ApJ, 604, 442