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The massive black hole in the center of the active galaxy Mrk421
Xie GZ(谢光中)1,2; Bai JM(白金明)1; Zhang X(张雄)1,4; Fan, JH3; Bai, JM
Contribution Rank第1完成单位
Indexed BySCI
KeywordBl Lacertae Objects : Individual : Mrk 421 Gamma-rays : Theory Galaxy : Photometry
AbstractWe report the observation of a dramatic outburst in the optical band from the active galaxy Markarian 421 (Mrk 421). During this outburst, the brightness of Mrk 421 increased rapidly by 1.34mag from B=15.67 to B=14.32 in 26 minutes. 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-ray suggest that they are both produced in the same emission region, and that the emission region is extremely small, R approximate to 1.23 x 10(14) cm. With these results, we prove that there is a massive black hole with M = 2 x 10(6) M. in the centre of Mrk 421. We obtained also a important result R=205R(g) > 200R(g) (Sunyaev 1975). This could provide a new challenge for current theoretical model of such emissions. We prove that the origin of TeV gamma-ray is by Synchrotron self-Compton.
Subject AreaAstronomy & Astrophysics
WOS IDWOS:000074072100008
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
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Document Type期刊论文
Corresponding AuthorBai, JM
Affiliation1.Yunnan Astronomical Observatory, The Chinese Academy of Sciences, Kunming, 650011, P.R. China
2.United Laboratory of Optical Astronomy, The Chinese Academy of Sciences (ULOAC)
3.Astrophysical Center, Guangzhou Teacher’s College, Guangzhou 510400, P.R. China
4.Department of physics of Yunnan Normal University, Kunming, P.R. China
Recommended Citation
GB/T 7714
Xie GZ,Bai JM,Zhang X,et al. The massive black hole in the center of the active galaxy Mrk421[J]. ASTRONOMY & ASTROPHYSICS,1998,334(1):L29-L31.
APA Xie GZ,Bai JM,Zhang X,Fan, JH,&Bai, JM.(1998).The massive black hole in the center of the active galaxy Mrk421.ASTRONOMY & ASTROPHYSICS,334(1),L29-L31.
MLA Xie GZ,et al."The massive black hole in the center of the active galaxy Mrk421".ASTRONOMY & ASTROPHYSICS 334.1(1998):L29-L31.
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