Group of Solar Eruptions
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(More information: http://space.wh.sdu.edu.cn)
Solar eruptions, including coronal mass ejections (CMEs) and solar flares, are spectacular eruptive phenomena occurring in the solar atmosphere. They represent the strongest energy release process in the solar system, with sometimes catastrophic impact on the geo-space environment. Despite intensive investigations over past decades, the exact physical process initiating and driving the eruption remains not resolved.
During solar eruptions, a significant amount of magnetic energy is transformed into kinetic energy of energetic particles. It remains elusive regarding how particles are accelerated during solar eruptions (through shock or reconnection related processes). The energetic particles, especially the electrons, can excite various types ofelectro-magnetic emission enhancement through a number of emitting mechanisms. Of particular interests are the radio bursts at the metric and centimeter (microwave) wavelengths, as well as the hard-X-ray and soft-X-ray emissions. They are important since they carry important information about the background coronal media and the energetic particles.
The group explores various aspects of solar eruptions, including the initiation and eruptive mechanisms of CMEs/flares, particle acceleration via shocks and magnetic reconnections, as well as critical issues relevant to solar radio bursts and x-ray emissions. We are also developing state-of-the-art instruments observing the sun via radio wavelengths.
The solar radio spectrographs built and operated by us at ChaShan. The 6-m parabola works at 150-500 MHz, and the 1*3 LPDA array worksin the range of 30-180 MHz. The two systems are independent and both featured by very high spectral (10 kHz) and temporal (ms) resolution.
GROUP PHOTOS (with collaborators Gang Li, Qiang Hu, and Suli Ma, in the absence of Dr. ArtemKoval&H. Mahboub)
Prof. Dr. Yao Chen (http://space.wh.sdu.edu.cn/bencandy.php?fid=36&aid=555)
Prof. Dr. Hongqiang Song
Dr. Chaoling Tang, Dr. MaoshuiLv, Dr. GuipingRuan, Mr. Qingfu Du
Associate Researcher: Dr. Ruisheng Zheng, Dr. Xiangliang Kong
Technician: Dr. Shiwei Feng, Mr. Zhao Wu (also a phd student)
Postdoctoral Scientists: H. Mahboub, ArtemKoval
Guohui Du, Zhao Wu, Bing Wang, Guang Lu, Chuanyang Li, Di Zhao, Hao Ning, Sulan Ni, Mehdi Yousefzadeh
Main Research Grants
Studies on dynamic/kinetic processes of solar flares and coronal mass ejections, NSFC, key project, Yuan 3,540,000, 2018.1-2022.12. (PI: Yao CHEN)
Development of Key Technologies in the Two-element Interferometer ofSolar-flare Microwave Bursts (20-40 GHz), Yuan 710,000, NSFC, general project, 2018.1-2021.12.(PI: Yao CHEN)
Roles of streamers in coronal shock acceleration of energetic electrons in the corona, NSFC, general project, Yuan 800,000, 2013.1-2017.12.(PI: Yao CHEN)
Solar eruptions, shocks, electron acceleration and solar radio bursts, NSFC, key project, Yuan 2850,000, 2014.1-2018.12.(PI: Yao CHEN)
Effects of coronal magnetic structures on shock-electron acceleration and type II solar radio bursts, NSFC grant for youths, Yuan 220,000, 2016.1-2018.12.(PI: Xiangliang, Kong)
Imaging study of type II solar radio bursts, NSFC, general joint project in astronomy, 480,000, 2015.1-2017.12.(PI: Shiwei Feng)
Evolution of magnetic field and relevant eruptive events in solar active regions, NSFC, general joint project in astronomy, Yuan 540,000, 2014.1-2016.12.(PI: GuipingRuan)
Streamer classification and observations of corresponding plasma sheet-solar wind plasmas, Yuan 800,000, 2014.1-2016.12.(PI: Hongqiang Song)
Publications in 2012-2017
S. W. Feng, Y. Chen, C. Y. Li, B. Wang, Z. Wu, X. L. Kong, Q. F. Du, J. R. Zhang, G. Q. Zhao, Harmonics of solar radio spikes at metric wavelengths, Solar Physics, in press, 2017.
Hongyu Liu, Yao Chen, Kysunguk Cho, et al., A Solar Stationary Type IV Radio Burst and its Radiation Mechanism, Solar Physics, 2017, in press.
MaoshuiLv, Yao Chen, Chuanyang Li, et al., Sources of a multi-lane type-II solar radio burst on 5 November 2014, Solar Physics, 2017, in press.
Xiangliang Kong, Fan Guo, Joe Giacalone, Hui Li, and Yao Chen, The acceleration of high-energy protons at coronal shocks: the effect of large-scale streamer-like magnetic field structures, the Astrophysical Journal, 851:38 (9pp), 2017 December 10
Qing-Fu Du, Lei Chen, Yue-Chang Zhao, Xin Li, Yan Zhou, Jun-Rui Zhang, Fa-Bao Yan, Shi-Wei Feng, Chuan-Yang Li, Yao Chen, A Solar Radio Dynamic Spectrograph with Flexible Temporal-spectral Resolution, Research in Astronomy and Astrophysics, 2017, 17, 098.
Hong-Qiang Song, Xin Cheng, Yao Chen, Jie Zhang, Bing Wang, Le-Ping Li, Bo Li, Qiang Hu, and Gang Li, The Three-Part Structure of A Filament-Unrelated Solar Coronal Mass Ejection, The Astrophysical Journal, 848:21 (7pp), 2017 October 10.
ArtemKoval, Yao CHEN, Aleksander Stanislavsky, Qing-He Zhang, Traveling Ionospheric Disturbances as Huge Natural Lenses: Solar Radio Emission Focusing Effect, J. Geophys. Res. Space Physics, 122, doi:10.1002/2017JA024080.
Yao Chen, Zhao Wu, Wei Liu, Richard A. Schwartz, Di Zhao, Bing Wang and Guohui Du, Double Coronal X-ray and Microwave Sources Associated With A Magnetic Breakout Solar Eruption, ApJ, 843:8 (10pp), 2017 July 1.
C.Y. Li, Y. Chen*, W. Bing, G.P. Ruan, S.W. Feng, G.H. Du, X.L. Kong, EUV and Magnetic Activities Associated with Type-I Solar Radio Bursts, Solar Phys (2017) 292:82, DOI 10.1007/s11207-017-1108-1.
Ruisheng Zheng, Yao Chen, Bing Wang, Gang Li and Yongyuan Xiang, Interchange reconnection associated with a confined filament eruption: Implications for the source of transient cold-dense plasma in solar winds, The Astrophysical Journal, 840:3 (9pp), 2017.
Hongqiang Song, Yao Chen, et al., The Origin of Solar Filament Plasma Inferred from in situ Observations of Elemental Abundances, The Astrophysical Journal Letters, 836:L11 (7pp), 2017.
Ruisheng Zheng, Qingmin Zhang, Yao Chen, et al., Interaction of Two Filaments in a Long Filament Channel Associated with Twin Coronal Mass Ejections, ApJ, Volume 836, Issue 2, article id. 160, (9pp), 2017.
Xiangliang Kong, Yao Chen, Shiwei Feng, Guohui Du, Chuanyang Li, ArtemKoval, V. Vasanth, Bing Wang, Fan Guo, and Gang Li, Observation of a metric type N solar radio burst, ApJ, 830:37, 2016.
V.Vasanth, Yao Chen*, Shiwei Feng, Suli Ma, Guohui Du, Hongqiang Song,Xiangliang Kong, and Bing Wang, An Eruptive Hot-Channel Structure Observed at MetricWavelength as a Moving Type-IV Solar Radio Burst, ApJL, 830:L2 (8pp), 2016.
Bing Wang, Yao Chen*, Jie Fu, Bo Li, Xing Li, and Wei Liu, Dynamics of a prominence-horn structure during its evaporation in the solarcorona,ApJL, 827:L33, 2016.
Shiwei Feng, Yao Chen*, Hongqiang Song, Bing Wang, and Xiangliang Kong, An imaging study of a complex solar coronal radio eruption, ApJ, 827, L9, 2016
A.A. Koval, A.A. Stanislavsky, Y. Chen, S. W. Feng, A.A. Konovalenko, and Ya.S. Volvach, DECAMETER STATIONARY TYPE IV BURST IN IMAGING OBSERVATIONSON THE 6TH OF SEPTEMBER 2014, ApJ, 826:125, 2016.
Chunlin Tian, Yao Chen, Numerical simulations of Kelvin-Helmholtz instability: a two-dimensional parametric study, The Astrophysical Journal, 824:60 (10pp), 2016.
Ruisheng Zheng, Yao Chen, and Bing Wang, Slipping Magnetic Reconnections with Multiple Flare Ribbons during an X-class Solar Flare, 823, 136, ApJ, 2016.
H.Q. Song, Z. Zhong, Y. Chen, J. Zhang, X. Cheng, L. Zhao, Q. Hu, and G. Li., A Statistical Study of the Average Iron Charge State Distributions inside Magnetic Clouds for Solar Cycle 23,The Astrophysical Journal Supplement Series, 224 (2), article id. 27, 2016.
Yao Chen, Guohui Du, Di Zhao, Zhao Wu, Wei Liu, Bing Wang, Shiwei Feng, and HongqiangSong, IMAGING A MAGNETIC-BREAKOUT SOLAR ERUPTION, The Astrophysical Journal Letters, 820:L37 (8pp), 2016.
Zhao Wu, Yao Chen*, Guangli Huang, Hiroshi Nakajima, Hongqiang Song, Victor Melnikov,Wei Liu, Gang Li, KalugoduChandrashekhar, and Fangran Jiao, MICROWAVE IMAGING OF A HOT FLUX ROPE STRUCTURE DURINGTHE PRE-IMPULSIVE STAGE OF AN ERUPTIVE M7.7 SOLAR FLARE, The Astrophysical Journal Letters, 820:L29 (7pp), 2016
Xiangliang Kong, Yao Chen, Fan Guo, Shiwei Feng, Guohui Du, and Gang Li, Electron Acceleration at a Coronal Shock Propagating Through a Large-scale Streamer-like Magnetic Field, The Astrophysical Journal, 821:32 (12pp), 2016.
Xiangliang Kong, Yao Chen, and Fan Guo, The acceleration of electrons at a spherical coronal shock in a streamer-like coronalfield, AIP Conference Proceedings 1720, 070003 (2016); doi: 10.1063/1.4943840.
Ruisheng Zheng, Yao Chen, Guohui Du, and Chuanyang Li, Solar jet-coronal hole collision and a closely related coronal mass ejection, 819:L18 (7pp), 2016.
Jia Huang, Yong C.-M. Liu, Berndt Klecker, Yao Chen, Coincidence of Heliospheric Current Sheet andStream Interface: Implications for the Originand Evolution of the Solar Wind,Journal of Geophysical Research: Space Physics, Volume 121, Issue 1, pp. 19-29, 2016.
Lulu Zhao, Gang Li, R. W. Ebert, M. A. Dayeh, M. I. Desai, G. M.Mason, Z. Wu, Y. Chen, Modeling transport of energetic particles in corotating interaction regions: A case study, Journal of Geophysical Research: Space Physics, Volume 121, Issue 1, pp.77-92, 2016.
RuanGuiping, Yao Chen, Haiming Wang, GRADUAL MAGNETIC EVOLUTION OF SUNSPOT STRUCTURE AND FILAMENT–CORONA DYNAMICSASSOCIATED WITH THE X1.8 FLARE IN AR11283, 812:120, ApJ, 2015.
Guohui Du,Xiangliang Kong,Yao Chen, Shiwei Feng, Bing Wang, and Gang Li, An observational revisit of band-split solar type-II radio bursts, 812:52, ApJ, 2015.
Hongqiang SONG, Yao CHEN,Jie ZHANG, Xin CHENG, Bing Wang, Qiang HU, Gang LI, and Yuming WANG, Evidence of the solar EUV hot channel as a magnetic flux rope from remote-sensing and in situ observations, ApJL, 2015.
Hongqiang Song, Yao Chen, Jie Zhang, Xin Cheng, H. Fu, and Gang Li, ACCELERATION PHASES OF A SOLAR FILAMENT DURING ITS ERUPTION, ApJ, 804:L38 (5pp), 2015 May 10.
H. Q. Song, J. Zhang, Y. Chen, X. Cheng, G. Li, and Y. M. Wang, First taste of a hot channel in interplanetary space, ApJL, 2015, 803:96, doi:10.1088/0004-637X/803/2/96.
V. Vasanth, Yao Chen, Xiangliang Kong, and Bing Wang, Investigation on Geoeffectiveness of CMEs associated with IP type-II Radio Bursts, Solar Physics, 2015, DOI 10.1007/s11207-015-0713-0.
Shiwei Feng, Guohui Du, Yao Chen,Xiangliang Kong, Gang Li, Fan Guo, Simultaneous Radio and EUV Imagingof a Multi-lane Coronal Type II Radio Burst, Solar Physics, 2015, 290:1195-1205, DOI 10.1007/s11207-015-0673-4.
Xiangliang Kong, Yao Chen, et al., The Possible Role of Coronal Streamer as Magnetically-closed Structures in Shock-induced Energetic Electrons and Metric Type II Radio Bursts, ApJ, 798:81, 2015, doi:10.1088/0004-637X/798/2/81/.
Guohui Du, Yao Chen, et al., Temporal spectral shift and polarization of a band-splitting solar type II radio burst, ApJ Letters, 2014, 793:L39 (5pp).
Ding, Liu-Guan, Li, Gang2, Jiang, Yong, Le, Gui-Ming, Shen, Cheng-Long, Wang,Yu-Ming, Chen, Yao, Xu, Fei, Gu, Bin, Zhang, Ya-Nan, Interaction of two Coronal Mass Ejections 1 in the 2013 May 22 large Solar Energetic Particle event, ApJ, 2014, 793:L35 (7pp).
H. Q. Song, J. Zhang, Y. Chen, and X. Cheng, Direct observations of magnetic flux rope formation during a solar coronal mass ejection, ApJ, 792:L40 (6pp), 2014.
Yao Chen, Guohui Du, Li Feng, Shiwei Feng, Xiangliang, Kong, Fan Guo, Bing Wang, and Gang Li, A solar type II radio burst from CME-streamer interaction:simultaneous radio and EUV imaging, ApJ, 787:59 (7pp), 2014.
GuipingRuan, Yao Chen, Shuo Wang, Hongqi Zhang, Gang Li, Ju Jing, Jiangtao Su, Xing Li, Hairong Xu, Haiming Wang, A solar eruption driven by rapid sunspot rotation, ApJ, 784:165, 2014.
H. Q. Song, J. Zhang, X. Cheng, Y. Chen, R. Liu, Y. M. Wang and B. Li,Temperature evolution of a magnetic flux rope in a failed solar eruption, ApJ, 784:48, 2014.
Zhao Wu, Yao Chen, Gang Li, Y. Liu, R. W. Ebert, M. I. Desai, G. M. Mason, L. Zhao,F. Guo, C. L. Tang, Observation and modeling of a CIR pair event, ApJ, 781:17, 2014.
Li,G.; Kong,X.;Chen,Y.; Zank,G.P.; Zhao,L, Electron Acceleration and Spectral Hardening of Continuum Emission in Solar Flares, Proceedings of a conference held 14-19 April 2013 at Myrtle Beach, South Carolina, USA. Edited by Qiang Hu and Gary P. Zank. ASP Conference Series, Vol. 484, 2014, p.123.
Xiang Liang Kong, Gang Li, and Yao Chen, A statistical study on spectral hardening in gamma-ray solar flares, ApJ, 774:140 (8pp), 2013.
A study on fast flareless CMEs, Hong-qiang Song, Yao Chen, D. D. Ye, G. Q. HAN, G. H. Du, G. Li, J. Zhang, Q.Hu, A study on fast flareless CMEs, ApJ, 773: 129, 2013
Gang Li, X. L. Kong, G. Zank, Yao Chen, On the spectral hardening at > 300 keV in solar flares, ApJL, 769:22,2013.
C. L. Shen, Gang Li, X, L. Kong, J. Hu, X. D. Sun, L. Ding, Y. Chen, Y. M. Wang, Compound twin coronal mass ejections in the 2012 May 17 GLE event, the Astrophysical Journal, 2013, 763:114 (8pp), 2013 February 1.
Yao Chen, A Review of Recent Studies on Coronal Dynamics: Streamers, Coronal Mass Ejections, and Their Interactions, Chinese Science Bulletin, 58(14): 1599-1624, 2013.
S. W. Feng, Y. Chen, X.L. Kong, Gang Li, H.Q. Song, X. S. Feng, & F. Guo, Diagnostics on the source properties of type II radio burst with spectral bumps, the Astrophysical Journal, 767:29, 2013.
S.W. Feng, Y. Chen, X.L. Kong, Gang Li, H.Q. Song, X. S. Feng, & Ying Liu, Radio signatures of CME-streamer interactions and sourcediagnostics of Type-II radio bursts, the Astrophysical Journal, 753: 21, 2012.
X. L. Kong, Y. Chen, Gang Li, S. W. Feng, H. Q. Song, F. Guo and F. R. Jiao, A Broken Solar Type II Radio Burst Induced by a Coronal Shock Propagating across the Streamer Boundary, the Astrophysical Journal, 750, 158 (7pp), 2012.
H.Q. Song, Y. Chen, G. Li, X.L. Kong, S. W. Feng, Coalescence of macroscopic magnetic islands and electronacceleration from STEREO observation, Physical Review X, 2, 021015 (2012).
Hong-Qiang Song, Xiang-Liang Kong, Yao Chen, Bo Li, Gang Li, Shi-Wei Feng, Li-Dong Xia, A Statistical Study on the Ray Morphology and Blob Dynamics in the Wake of Coronal Mass Ejections, Solar Physics, 2012, DOI 10.1007/s11207-011-9848-9.
Li Bo,Yao Chen,and Li-dong Xia, What geometrical factors determine the in situ solar wind speed, Chinese Science Bulletin, 57(12), pp 1409-1414, 2012.