A study of the massive black hole in the center of the BL Lac object Mark 421

	A study of the massive black hole in the center of the BL Lac object Mark 421
	Zhang X(张雄); Xie GZ(谢光中); Zhao, G ; Ma, L ; Bai JM(白金明); Bai JM(白金明); Ma L(马力); Xie GZ(谢光中); Zhang X(张雄)
刊名	ACTA PHYSICA SINICA
	2000-02
卷号	49 期号:2 页码:379-382
ISSN号	1000-3290
通讯作者	Zhang, X
产权排序	第一完成单位
英文摘要	We report the observation of a dramatic outburst in the optical band from the BL Lac object Markarian 421(Mark 421). During this outburst, the brightness of Mark 421 increased rapidly by 1.34mag from B = 5.67 to B = 14.32 in 26 min. Another interesting fact is that this extremely rapid burst in the optical band is similar to the dramatic outburst of TeV photons which was obtained by Gaidos et al.(1996) in every essential respect, for example, the time scales on which they vary, and the shapes of the light curves. These data in the optical band and TeV gamma-rays suggest that they are both produced in the same emission region, and that the emission region is extremely small, R = 1.23 x 10(12)m. With these results, we prove that there is a massive black hole with M similar or equal to 2 x 10(6) M. in the center of Mark 421. This could provide a new challenge for current theoretical model of such emissions. We prove that the origin of TeV gamma-rays is by synchotron self-Compton.
学科主题	Physics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	CONFIRMATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000085139300039
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6851]
专题	云南天文台_星系研究组
通讯作者	Zhang X(张雄)
作者单位	1.Chinese Acad Sci, Beijing Astron Observ, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Yunan Astron Observ, Kunming 65001, Peoples R China 3.Yunnan Normal Univ, Dept Phys, Kunming 650092, Peoples R China
推荐引用方式 GB/T 7714	Zhang X,Xie GZ,Zhao, G,et al. A study of the massive black hole in the center of the BL Lac object Mark 421[J]. ACTA PHYSICA SINICA,2000,49(2):379-382.
APA	Zhang X.,Xie GZ.,Zhao, G.,Ma, L.,Bai JM.,...&张雄.(2000).A study of the massive black hole in the center of the BL Lac object Mark 421.ACTA PHYSICA SINICA,49(2),379-382.
MLA	Zhang X,et al."A study of the massive black hole in the center of the BL Lac object Mark 421".ACTA PHYSICA SINICA 49.2(2000):379-382.