中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Gamma-ray emission from the gamma-ray-loud BL Lac objects

文献类型:期刊论文

作者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
刊名CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
出版日期2001-12
卷号1期号:6页码:494-500
关键词gamma rays BL Lacertae objects : general
ISSN号1009-9271
产权排序第一完成单位
通讯作者Xie, GZ (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China.
英文摘要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.
WOS标题词Science & Technology ; Physical Sciences
学科主题Astronomy & Astrophysics
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]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
收录类别SCI
原文出处http://iopscience.iop.org/1009-9271/1/6/494/
语种英语
WOS记录号WOS:000173057800003
源URL[http://ir.ynao.ac.cn/handle/114a53/6932]  
专题云南天文台_星系研究组
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
推荐引用方式
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.(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.

入库方式: OAI收割

来源:云南天文台

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。