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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.
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2001-12
卷号1期号:6页码:494-500
DOI10.1088/1009-9271/1/6/494
产权排序第1完成单位
收录类别SCI
关键词Gamma Rays Bl Lacertae Objects : General
摘要Using 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.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1009-9271
URL查看原文
归档日期2002-02-27
WOS记录号WOS:000173057800003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ACTIVE GALAXY MARKARIAN-421 ; NEAR-INFRARED EMISSION ; LACERTAE OBJECTS ; GALACTIC NUCLEI ; TEV PHOTONS ; BLAZARS ; SPECTRA ; MODEL ; PKS-2155-304 ; PHOTOMETRY
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6932
专题星系研究组
通讯作者Xie, GZ (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China.
作者单位1.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
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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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