Non-thermal Electron Energization During the Impulsive Phase of an X9.3 Flare Revealed by Insight-HXMT

doi:10.3847/1538-4357/ac0cfb

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	Non-thermal Electron Energization During the Impulsive Phase of an X9.3 Flare Revealed by Insight-HXMT
	Zhang, P.; Wang, W.; Su, Y.; Song, L. M.; Li, C. K.; Zhou, D. K.; Zhang, S. N.; Tian, H.; Liu, S. M.; Zhao, H. S.
刊名	The Astrophysical Journal
	2021
卷号	918 页码:42
ISSN号	0004-637X
DOI	10.3847/1538-4357/ac0cfb
英文摘要	The X9.3 flare SOL20170906T11:55 was observed by the CsI detector aboard the first Chinese X-ray observatory Hard X-ray Modulation telescope (Insight-HXMT). Using the wavelets method, we report 22 s quasiperiodic pulsations during the impulsive phase. The spectra from 100 keV to 800 keV show the evolution with the gamma-ray flux of a power-law photon index from ~1.8 before the peak, ~2.0 around the flare peak, to ~1.8 again. The gyrosynchrotron microwave spectral analysis reveals a 36"6 ± 0"6 radius gyrosynchrotron source with mean transverse magnetic field around 608.2 Gauss. The penetrated ݱ0 keV non-thermal electron density is about 10^6.7 cm^-3 at peak time. The magnetic field strength followed the evolution of high-frequency radio flux. Further gyrosynchrotron source modeling analysis implies that there exists a quite steady gyrosynchrotron source, and the non-thermal electron density and transverse magnetic field evolution are similar to higher-frequency light curves. The temporal spectral analysis reveals that those non-thermal electrons are accelerated by repeated magnetic reconnection, likely from a lower corona source.
WOS记录号	WOS:000693408200001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/289804]
专题	高能物理研究所_粒子天体物理中心硬X射线调制望远镜卫星
推荐引用方式 GB/T 7714	Zhang, P.,Wang, W.,Su, Y.,et al. Non-thermal Electron Energization During the Impulsive Phase of an X9.3 Flare Revealed by Insight-HXMT[J]. The Astrophysical Journal,2021,918:42.
APA	Zhang, P..,Wang, W..,Su, Y..,Song, L. M..,Li, C. K..,...&Zhang, S..(2021).Non-thermal Electron Energization During the Impulsive Phase of an X9.3 Flare Revealed by Insight-HXMT.The Astrophysical Journal,918,42.
MLA	Zhang, P.,et al."Non-thermal Electron Energization During the Impulsive Phase of an X9.3 Flare Revealed by Insight-HXMT".The Astrophysical Journal 918(2021):42.