摘要
耀变体的喷流辐射机制是一个非常重要的问题。从文献中收集了442个耀变体的数据,这些耀变体包括215个平谱射电类星体(Flat Spectrum Radio Quasars,FSRQ)和227个蝎虎天体(BL Lac),通过数据研究了耀变体的喷流功率与多波段光度的相关性。研究结果表明:(1)对于平谱射电类星体,喷流功率与射电波段、光学波段、X射线和γ射线的光度都有强相关性,且光度分布顺序为log Lγ>log L O>log L X>log L R。(2)对于蝎虎天体,喷流功率与射电波段、光学波段和γ射线的光度都有强相关性,但是喷流功率与X射线的光度只有弱相关性;蝎虎天体的光度分布顺序为log L O>log Lγ>log L X>log L R,而且蝎虎天体的各波段光度都小于平谱射电类星体。我们认为这些差异是由于平谱射电类星体与蝎虎天体的内禀属性不同导致的,即吸积模式不同和喷流辐射机制不同等。
The jet radiation mechanism of fermi blazars is a very important problem.442 groups of blazar data are collected,including 215 flat-spectrum radio quasars(FSRQ)and 227 BL Lac.Based on the data,the correlation between jet power and multi-wave luminosity is studied.The results are as follows:(1)for FSRQ,jet power is strongly correlated with the luminosity of radio,optical band,X-ray and gamma rays.And the order of luminosity distrbution is:log Lγ>log L O>log L X>log L R.(2)For BL Lac,jet power is strongly correlated with the luminosity of radio,optical bands and gamma-rays.But there is only a weak correlation between jet power and X-ray luminosity.And the order of luminosity distrbution is:log L O>log Lγ>log L X>log L R.Moreover,the luminosity of each band of BL Lac is less than that of FSRQ.We believe that these differences are due to differences in the intrinsic properties of FSRQ and BL Lac,i.e.,differences in accretion modes and jet radiation mechanisms,etc.
作者
马凯旋
张皓晶
晏培琳
陆林
张欢
Ma Kaixuan;Zhang Haojing;Yan Peilin;Lu Lin;Zhang Huan(School of Physics and Electronic Information,Yunnan Normal University,Kunming 650500,China;Key Laboratory of Colleges and Universities in Yunnan Province for High-energy Astrophysics,Kunming 650500,China)
出处
《天文研究与技术》
CSCD
2021年第4期437-444,共8页
Astronomical Research & Technology
基金
国家自然科学基金(11063004)
云南省中青年学术和技术带头人后备人才(2017HB020)资助.
