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Statistical Analysis on XMM-Newton X-Ray Flares of Mrk 421: Distributions of Peak Flux and Flaring Time Duration
Yan, Dahai1,2; Yang, Shenbang3; Zhang, Pengfei3,4; Dai, Benzhong3; Wang, Jiancheng1,2; Zhang, Li3
2018-09-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume864Issue:2Pages:16
Abstract

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.

Keywordgalaxies: jets gamma rays: galaxies radiation mechanisms: nonthermal
DOI10.3847/1538-4357/aadd01
WOS KeywordBL-LAC OBJECTS ; SELF-ORGANIZED CRITICALITY ; SUPERMASSIVE BLACK-HOLES ; LIGHT CURVES ; MULTIWAVELENGTH OBSERVATIONS ; TIDAL DISRUPTION ; BLAZAR MODEL ; TEV BLAZARS ; GAMMA-RAYS ; JET MODEL
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000444645600001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/21328
Collection中国科学院紫金山天文台
Corresponding AuthorYan, Dahai
Affiliation1.Chinese Acad Sci, Yunnan Observ, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China
2.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China
3.Yunnan Univ, Key Lab Astroparticle Phys Yunnan Prov, Kunming 650091, Yunnan, Peoples R China
4.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Yan, Dahai,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, Dahai,Yang, Shenbang,Zhang, Pengfei,Dai, Benzhong,Wang, Jiancheng,&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, Dahai,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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