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ABSORPTION OF 10 GeV-1 TeV GAMMA RAYS FROM 3C 279
Bai JM(白金明)1; Liu HT(刘洪涛)1; Ma, L2; Ma, L (reprint author), Yunnan Normal Univ, Dept Phys, Kunming 650092, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2009-07-10
卷号699期号:2页码:2002-2008
DOI10.1088/0004-637X/699/2/2002
产权排序第1完成单位
收录类别SCI
关键词Gamma Rays: Theory Quasars: Individual (3c 279)
摘要In this paper, we revisit gamma-ray-emitting region for 10 GeV-1 TeV gamma rays from 3C 279 through studying the photon-photon absorption optical depth due to the diffuse radiation of the broad-line region (BLR) and the extragalactic background light (EBL). Based on the power-law spectrum detected by MAGIC, the preabsorbed spectra are inferred by correcting the photon-photon absorption on the diffuse photons of the BLR (internal absorption) and the EBL (external absorption). Position of gamma-ray-emitting region R(gamma) determines the relative contributions of this two diffuse radiations to the total absorption. Our results indicate that R(gamma) may be within the BLR shell for 3C 279, likely closer to the inner radius, which is consistent with our previous results. This is neither consistent with the suggestions of Bottcher et al., that very high energy (VHE) gamma-ray emission is produced far outside the BLR, nor with the assumptions of Tavecchio and Mazin, that VHE gamma-ray-emitting region is inside the BLR cavity. R(gamma) is a key physical quantity that could set some constraints on emission mechanisms that produce the VHE gamma rays from 3C 279. Observations of Fermi-Large Area Telescope, MAGIC, H. E. S. S., and VERITAS in the near future could give more constraints on the position of gamma-ray-emitting region relative to the BLR.
项目资助者Training Programme for the Talents of West Light Foundation of the CAS ; National Natural Science Foundation of China (NSFC) [10533050, 10778702] ; NSFC [10778726] ; CAS, China [2009CB824800]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
归档日期2009-06-29
WOS记录号WOS:000267401500095
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EXTRAGALACTIC BACKGROUND LIGHT ; ACTIVE GALACTIC NUCLEI ; BROAD-LINE REGION ; INTERGALACTIC INFRARED RADIATION ; HIGH-ENERGY EMISSION ; 2ND EGRET CATALOG ; UPPER LIMITS ; BLAZAR 3C-279 ; MARKARIAN 501 ; LOUD BLAZARS
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被引频次:20[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5386
专题南方基地
通讯作者Ma, L (reprint author), Yunnan Normal Univ, Dept Phys, Kunming 650092, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
2.Physics Department, Yunnan Normal University, Kunming 650092, China
第一作者单位中国科学院云南天文台
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Bai JM,Liu HT,Ma, L,et al. ABSORPTION OF 10 GeV-1 TeV GAMMA RAYS FROM 3C 279[J]. ASTROPHYSICAL JOURNAL,2009,699(2):2002-2008.
APA Bai JM,Liu HT,Ma, L,&Ma, L .(2009).ABSORPTION OF 10 GeV-1 TeV GAMMA RAYS FROM 3C 279.ASTROPHYSICAL JOURNAL,699(2),2002-2008.
MLA Bai JM,et al."ABSORPTION OF 10 GeV-1 TeV GAMMA RAYS FROM 3C 279".ASTROPHYSICAL JOURNAL 699.2(2009):2002-2008.
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