A new model for the periodic outbursts of the BL Lac object OJ287
文献类型：期刊论文
| 作者 | Shi, Weizhao1,2 ; Liu, Xiang1; Song, Huagang1
|
| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 310期号:1-2页码:59-63 |
| 关键词 | black hole physics : BL Lac objects : individual : OJ287 radiation mechanisms non-thermal |
| 通讯作者 | Shi, Weizhao |
| 英文摘要 | Recent observations provide strong evidence for the BL Lac object OJ287 exhibiting a 11.6 +/- 0.5 yr periodicity with a double-peaked maxima in its optical flux variations. Several models have been proposed for the optical behavior. The 2005 November outburst in OJ287 gives us a surprising result since calculation based on the periodicity was predicting such an outburst in late 2006. Here we suggest a new model, it can not only explain the optical quasi-periodic behavior, but also the radio flares behavior which is and simultaneous with the optical flares. We propose that OJ287 is a binary pair of super-massive black holes, both of them creating a jet. The quasi-periodic double peaks would be due to the relativistic beaming effect on the emission coming from the double helix jets. We used "core flares" to explain the large lags between light curves at different frequencies, and the assumption of two jets appear to be merged with each other partly in the radio frequency emitting regions provides a viable interpretation that we can see only a broad maximum which contains two radio flares that we cannot distinguish. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | BLACK-HOLE MODEL ; OJ 287 ; JET |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247635000009 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/815]  |
| 专题 | 星系宇宙学研究团组 新疆天文台_射电天文研究室 新疆天文台_科普办公室 研究生 |
| 作者单位 | 1.Natl Astron Observ, Urumqi Observ, Urumqi, Peoples R China 2.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Weizhao,Liu, Xiang,Song, Huagang. A new model for the periodic outbursts of the BL Lac object OJ287[J]. ASTROPHYSICS AND SPACE SCIENCE,2007,310(1-2):59-63. |
| APA | Shi, Weizhao,Liu, Xiang,&Song, Huagang.(2007).A new model for the periodic outbursts of the BL Lac object OJ287.ASTROPHYSICS AND SPACE SCIENCE,310(1-2),59-63. |
| MLA | Shi, Weizhao,et al."A new model for the periodic outbursts of the BL Lac object OJ287".ASTROPHYSICS AND SPACE SCIENCE 310.1-2(2007):59-63. |
入库方式： OAI收割
来源：新疆天文台
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