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Statistical Analysis on XMM-Newton X-Ray Flares of Mrk 421: Distributions of Peak Flux and Flaring Time Duration
Yan DH(闫大海)1,2; Yang, Shenbang3; Zhang, Pengfei3,4; Dai, Benzhong3; Wang JC(王建成)1,2; Zhang, Li3
发表期刊ASTROPHYSICAL JOURNAL
2018-09-10
卷号864期号:2页码:16
DOI10.3847/1538-4357/aadd01
产权排序第1完成单位
收录类别SCI
关键词Galaxies: Jets Gamma Rays: Galaxies Radiation Mechanisms: Nonthermal
摘要

The energy dissipation mechanism in blazar jet is unknown. Blazar flares could provide insights into this problem. Here we report statistical results of XMM-Newton observations of X-ray flares in Mrk 421. We analyze all public XMM-Newton X-ray observations for Mrk 421, and construct the light curves. Through fitting the light curves, we obtain the flare-profile parameters, such as peak flux (F-p) and flaring time duration (T-fl). It is found that the distributions of F-p and T-fl both obey a power-law form, with the same index of alpha(F) = alpha(T) approximate to 1. The statistical properties are consistent with the predictions for a self-organized criticality system with energy dissipation in one-dimensional space. This is similar to a solar flare, but with different space dimensions of the energy dissipation domain. This suggests that the X-ray flaers of Mrk 421 might be driven by a magnetic reconnection mechanism. Moreover, in the analysis, we find that variability on a timescale of similar to 1000 s appears frequently. This rapid variability indicates a magnetic field of >= 2.1 delta(-1/3)(D) G (delta(D) is the Doppler factor) in the emission region.

资助项目CAS Light of West China Program ; National Natural Science Foundation of China[NSFC-11573060] ; National Natural Science Foundation of China[NSFC-11573026] ; National Natural Science Foundation of China[NSFC-U1738124] ; National Natural Science Foundation of China[NSFC-11661161010] ; National Natural Science Foundation of China[NSFC-U1531131] ; National Natural Science Foundation of China[NSFC-11803081] ; Key Laboratory of Astroparticle Physics of Yunnan Province[2016DG006]
语种英语
学科领域天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
ISSN0004-637X
URL查看原文
WOS记录号WOS:000444645600001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]Bl-lac Objects ; Self-organized Criticality ; Supermassive Black-holes ; Light Curves ; Multiwavelength Observations ; Tidal Disruption ; Blazar Model ; Tev Blazars ; Gamma-rays ; Jet Model
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/17914
专题高能天体物理研究组
中国科学院天体结构与演化重点实验室
通讯作者Yan DH(闫大海); Dai, Benzhong
作者单位1.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China
3.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China
4.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People's Republic of China
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Yan DH,Yang, Shenbang,Zhang, Pengfei,et al. Statistical Analysis on XMM-Newton X-Ray Flares of Mrk 421: Distributions of Peak Flux and Flaring Time Duration[J]. ASTROPHYSICAL JOURNAL,2018,864(2):16.
APA Yan DH,Yang, Shenbang,Zhang, Pengfei,Dai, Benzhong,Wang JC,&Zhang, Li.(2018).Statistical Analysis on XMM-Newton X-Ray Flares of Mrk 421: Distributions of Peak Flux and Flaring Time Duration.ASTROPHYSICAL JOURNAL,864(2),16.
MLA Yan DH,et al."Statistical Analysis on XMM-Newton X-Ray Flares of Mrk 421: Distributions of Peak Flux and Flaring Time Duration".ASTROPHYSICAL JOURNAL 864.2(2018):16.
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