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Gamma-ray emission from the gamma-ray-loud BL Lac objects
Xie GZ(谢光中)1,2,3,4; Dai BZ(戴本忠)1,3; Liang EW(梁恩维)1,2,5; Xie, ZH6; Xie, GZ (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China.
Source PublicationCHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2001-12
Volume1Issue:6Pages:494-500
DOI10.1088/1009-9271/1/6/494
Contribution Rank第1完成单位
Indexed BySCI
KeywordGamma Rays Bl Lacertae Objects : General
AbstractUsing the HST observation data of BL Lac objects by Urry et al. and gamma-ray observation data, we find that there is a correlation between Fgamma and F-O(nuclei) for gamma-ray-loud BL Lac objects (correlation coefficients: gamma = 0.63, p = 4.0 x 10(-2)), but no correlation between F-gamma and F-O(host), where F-O(nuclei) and F-O(host) are the fluxes of nuclei and host galaxy in V-band. For 19 gamma-ray-loud BL Lac objects with observed spectral index in multi-wavebands, the spectral index correlations between any two bands are as follow: (1) there is a strong correlation between alpha(gamma) and alpha(K) for 15 BL Lac objects (gamma = 0.84, p = 3.11 x 10(-4)); (2) the correlation between alpha(gamma) and alpha(O) for 12 BL Lac objects is gamma = 0.82, p = 1.5 x 10(-3); (3) there is no correlation between alpha(gamma), and alpha(x) for 16 BL Lac objects. The results, together with characteristic double-humped shape of their SEDs, show that the synchrotron self-Compton mechanism might be a main mechanism for the gamma-ray emission of the BL Lac objects. The electrons emitting IR and optical radiation via synchrotron are also responsible for upscattering these photons to gamma-rays, and a variability in IR-optical regime should be accompanied by a change in the gamma-rays.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN1009-9271
URL查看原文
Archive Date2002-02-27
WOS IDWOS:000173057800003
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordACTIVE GALAXY MARKARIAN-421 ; NEAR-INFRARED EMISSION ; LACERTAE OBJECTS ; GALACTIC NUCLEI ; TEV PHOTONS ; BLAZARS ; SPECTRA ; MODEL ; PKS-2155-304 ; PHOTOMETRY
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6932
Collection星系研究组
Corresponding AuthorXie, GZ (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China.
Affiliation1.Yunnan Astronomical Observatory, Chinese Academy of Science, Kunming 650011
2.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
3.Yunnan Astrophysics Center, Yunnan University, Kunming 650091
4.United Laboratory of Optical Astronomy, Chinese Academy of Sciences
5.Department of Physics, Guangxi University, Nanning 530004
6.Department of Physics, University of Hong Kong
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Xie GZ,Dai BZ,Liang EW,et al. Gamma-ray emission from the gamma-ray-loud BL Lac objects[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2001,1(6):494-500.
APA Xie GZ,Dai BZ,Liang EW,Xie, ZH,&Xie, GZ .(2001).Gamma-ray emission from the gamma-ray-loud BL Lac objects.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,1(6),494-500.
MLA Xie GZ,et al."Gamma-ray emission from the gamma-ray-loud BL Lac objects".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 1.6(2001):494-500.
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