The long-term optical behavior of Mkn 421
文献类型：期刊论文
| 作者 | Liu FK(刘复坤); Liu BF(刘碧芳); Xie GZ(谢光中) |
| 刊名 | ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
 |
| 出版日期 | 1997-06 |
| 卷号 | 123期号:3页码:569-574 |
| 关键词 | accretion BL Lac objects accretion disk individual Mkn 421 |
| ISSN号 | 0365-0138 |
| 产权排序 | 第二完成单位 |
| 英文摘要 | All data available in B band for the BL Lac object Mkn 421 from 22 publications are used to construct a historical light curve, dating back to 1900. It is found that the light curve is very complicated and consists of a set of outbursts with very large duration. The brightness of Mkn 421 varies from 11.6 magnitude to more than 16 magnitude. Analyses with Jurkevich method of computing periods of cyclic phenomena reveal in the light curve two kinds of behaviors. The first one is non-periodic with rapid, violent variations in intensity on time scales of hours to days. The second one is periodic with a possible period of 23.1 +/- 1.1 years. Another possible period of 15.3 +/- 0.7 years is not very significant. We have tested the robustness of the Jurkevich method. The period of about one year found in the light curves of Mkn 421 and of other objects is a spurious period due to the method and the observing window. We try to explain the period of 23.1 +/- 1.1 years under the thermal instability of a slim accretion disk around a massive black hole of mass 2 10(6) M.. |
| 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 ; UBVRI PHOTOPOLARIMETRIC OBSERVATIONS ; 0.35-3.5 MICRON PHOTOMETRY ; ACCRETION DISKS ; LAC OBJECTS ; VARIABILITY ; QUASARS ; BLAZARS ; RADIATION |
| 收录类别 | SCI |
| 原文出处 | http://adsabs.harvard.edu/abs/1997A%26AS..123..569L |
| 语种 | 英语 |
| WOS记录号 | WOS:A1997XJ14000011 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6880]  |
| 专题 | 云南天文台_星系研究组 |
| 推荐引用方式 GB/T 7714 | Liu FK,Liu BF,Xie GZ. The long-term optical behavior of Mkn 421[J]. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,1997,123(3):569-574. |
| APA | 刘复坤,刘碧芳,&谢光中.(1997).The long-term optical behavior of Mkn 421.ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,123(3),569-574. |
| MLA | 刘复坤,et al."The long-term optical behavior of Mkn 421".ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES 123.3(1997):569-574. |
入库方式： OAI收割
来源：云南天文台
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