Variability and beaming of GeV gamma-ray-loud blazars
文献类型：期刊论文
| 作者 | Xie GZ(谢光中)1,2 ; Ma L(马力)1,3,4; Zhou SB(周曙白)1,2,3; Chen LE(陈洛恩)1,3,5; Xie, ZH4
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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| 出版日期 | 2003 |
| 卷号 | 55期号:5页码:933-937 |
| 关键词 | black holes blazars : general galaxies : active galaxies : general gamnia-rays : Klein-Nishina effects observations |
| ISSN号 | 0004-6264 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Xie, GZ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China. |
| 英文摘要 | Considering the Klein-Nishina effects for high-energy gamma-ray emissions, we derived a corrected form of the basic Elliot-Shapiro formula. Two new lower limits to the time scales of the variability expected from an accreting Schwarzschild black hole and Kerr black hole were derived, respectively. For a sample of 25 GeV gamma-ray-loud blazars known to have the shortest time scales of flux variability, t(min), we studied the corrected Elliot-Shapiro relations between t(min) and the GeV gamma-ray luminosities in both the high and low states, respectively. We observe that: (1) No sources have been observed to have GeV gamma-ray luminosities in the low state above the corrected Eddington limit being produced by a Kerr black hole and a Schwarzschild black hole. (2) Only one source has been observed to have a luminosity in the high state above the corrected Eddington limit being produced by a Kerr black hole and a Schwarzschild black hole, which is a new argument for not invoking relativistic beaming models for the present EGRET observational data alone. Our conclusion is that if one considers the Klein-Nishina effect, the evidence for beamed emission from the present gamma-ray data alone is weak. Obviously, our conclusion is consistent with that of Dermer and Gehrels (1995, ApJ, 447, 103), but it is a new independent evidence. |
| 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] | BL-LACERTAE OBJECTS ; ACTIVE GALACTIC NUCLEI ; SUPERMASSIVE BLACK-HOLES ; TIME-SCALES ; EMISSION ; SEARCH ; MASSES ; RADIO ; LAC |
| 收录类别 | SCI |
| 原文出处 | http://pasj.oxfordjournals.org/content/55/5/933 |
| 语种 | 英语 |
| WOS记录号 | WOS:000186281000007 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6965]  |
| 专题 | 云南天文台_星系研究组 |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P. O. Box 110, Kunming 650011, P. R. China 2.Yunnan Astrophysics Center, Physics Department, Yunnan University, Kunming 650091, P. R. China 3.The Graduate School of The Chinese Academy of Sciences 4.Physics Department, Yunnan Normal University, Kunming 650092, P. R. China 5.Physics Department, Yuxi Normal College, Yuxi 653100, P. R. China |
| 推荐引用方式 GB/T 7714 | Xie GZ,Ma L,Zhou SB,et al. Variability and beaming of GeV gamma-ray-loud blazars[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2003,55(5):933-937. |
| APA | Xie GZ,Ma L,Zhou SB,Chen LE,&Xie, ZH.(2003).Variability and beaming of GeV gamma-ray-loud blazars.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,55(5),933-937. |
| MLA | Xie GZ,et al."Variability and beaming of GeV gamma-ray-loud blazars".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 55.5(2003):933-937. |
入库方式： OAI收割
来源：云南天文台
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