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BLAZAR ANTI-SEQUENCE OF SPECTRAL VARIATION WITHIN INDIVIDUAL BLAZARS: CASES FOR MRK 501 AND 3C 279
Zhang, Jin1,2; Zhang, Shuang-Nan1,3; Liang, En-Wei1,4
Source PublicationASTROPHYSICAL JOURNAL
2013-04-10
Volume767Issue:1
DOI10.1088/0004-637X/767/1/8
Indexed BySCI
KeywordBl Lacertae Objects: Individual (Mrk 501) Gamma Rays: Galaxies Radiation Mechanisms: Non-thermal Quasars: Individual (3c 279)
Abstract

The jet properties of Mrk 501 and 3C 279 are derived by fitting broadband spectral energy distributions (SEDs) with lepton models. The derived gamma(b) (the break Lorenz factor of the electron distribution) is 10(4)-10(6) for Mrk 501 and 200 similar to 600 for 3C 279. The magnetic field strength (B) of Mrk 501 is usually one order of magnitude lower than that of 3C 279, but their Doppler factors (delta) are comparable. A spectral variation feature where the peak luminosity is correlated with the peak frequency, which is opposite from the blazar sequence, is observed in the two sources. We find that (1) the peak luminosities of the two bumps in the SEDs for Mrk 501 depend on gamma(b) in both the observer and co-moving frames, but they are not correlated with B and delta and (2) the luminosity variation of 3C 279 is dominated by the external Compton (EC) peak and its peak luminosity is correlated with gamma(b) and d, but anti-correlated with B. These results suggest that gamma(b) may govern the spectral variation of Mrk 501 and delta and B would be responsible for the spectral variation of 3C 279. The narrow distribution of gamma b and the correlation of gamma b and B in 3C 279 would be due to the cooling from the EC process and the strong magnetic field. Based on our brief discussion, we propose that this spectral variation feature may originate from the instability of the corona but not from the variation of the accretion rate as does the blazar sequence.

Funding ProjectNational Basic Research Program (973 Programme) of China[2009CB824800] ; National Natural Science Foundation of China[11078008] ; National Natural Science Foundation of China[11025313] ; National Natural Science Foundation of China[11133002] ; National Natural Science Foundation of China[10725313] ; Guangxi Science Foundation[2011GXNSFB018063] ; Guangxi Science Foundation[2010GXNSFC013011] ; Guangxi SHI-BAI-QIAN project[2007201] ; Qianren start-up grant[292012312D1117210] ; Key Laboratory for the Structure and Evolution of Celestial Objects of the Chinese Academy of Sciences
Funding OrganizationNational Basic Research Program (973 Programme) of China[2009CB824800] ; National Natural Science Foundation of China[11078008, 11025313, 11133002, 10725313] ; Guangxi Science Foundation[2011GXNSFB018063, 2010GXNSFC013011] ; Guangxi SHI-BAI-QIAN project[2007201] ; Qianren start-up grant[292012312D1117210] ; Key Laboratory for the Structure and Evolution of Celestial Objects of the Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000316947500008
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordACTIVE GALACTIC NUCLEI ; MASS BLACK-HOLES ; MULTIWAVELENGTH OBSERVATIONS ; GAMMA-RAYS ; X-RAY ; CORRELATED VARIABILITY ; BRIGHT BLAZARS ; EVOLUTION ; EMISSION ; RADIATION
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9411
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorZhang, Jin
Affiliation1.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
4.Department of Physics and GXU-NAOC Center for Astrophysics and Space Sciences, Guangxi University, Nanning 530004, China
Recommended Citation
GB/T 7714
Zhang, Jin,Zhang, Shuang-Nan,Liang, En-Wei. BLAZAR ANTI-SEQUENCE OF SPECTRAL VARIATION WITHIN INDIVIDUAL BLAZARS: CASES FOR MRK 501 AND 3C 279[J]. ASTROPHYSICAL JOURNAL,2013,767(1).
APA Zhang, Jin,Zhang, Shuang-Nan,&Liang, En-Wei.(2013).BLAZAR ANTI-SEQUENCE OF SPECTRAL VARIATION WITHIN INDIVIDUAL BLAZARS: CASES FOR MRK 501 AND 3C 279.ASTROPHYSICAL JOURNAL,767(1).
MLA Zhang, Jin,et al."BLAZAR ANTI-SEQUENCE OF SPECTRAL VARIATION WITHIN INDIVIDUAL BLAZARS: CASES FOR MRK 501 AND 3C 279".ASTROPHYSICAL JOURNAL 767.1(2013).
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