Fermi耀变体喷流、吸积、质光关系的研究

发布时间：2018-07-31 19:40

【摘要】：活动星系在天文学上,是一类特殊的星系,它的核心称为活动星系核(active galactic nuclei,AGN),Blazars是活动星系核中最为活跃的一个子类,它具有高光度、快速大幅光变、高偏振、视超光速运动、喷流指向观测等奇异的观测现象和极端的物理特征。blazars的奇特性质反映出其结构和物理过程都十分复杂,本文主要对Fermi耀变体喷流吸积的关系、质光关系、多波段辐射、吸积率以及黑洞质量等问题进行一系列的研究。首先,对活动星系核的概念,分类,模型做了简单的介绍,对目前活动星系核的黑洞质量、多波段辐射和喷流做了相关的介绍。其次,介绍了耀变体(blazar)的观测特性、辐射机制,并简单的介绍了Fermi卫星以及Fermi源。另外,我们从文献中搜集到了111个Fermi耀变体(73个FSRQ,38个BL Lac),得到了可靠的射电核光度、宽线区光度、热光度和黑洞质量。我们的研究结果表明射电核光度和宽线区光度之间有明显的相关,支持了吸积过程和相对论喷流之间有紧密的联系。分析得到的关系~(0.81?0.06)C BLR RLogL L跟理论模型预测的结果一致,支持了耀变体喷流功率来源于从快速旋转的克尔黑洞中提取能量,吸积盘的磁场导致了黑洞的旋转。通过研究黑洞质量和内禀的热光度之间的关系,支持了Fermi耀变体的质量—光度关系是幂律的,类似于主序星。接下来,讨论了耀变体的演化序列。最后,从文献中搜集了191个Fermi FSRQ样本,我们研究了该样本吸积率和多波段光度之间的关系,黑洞质量和多波段光度之间的关系,得到如下结果:吸积率和多波段光度之间有显著的相关性,支持了喷流的形成和吸积之间有紧密的联系。黑洞质量和多波段光度之间的显著相关性可能暗示着更快速的喷流和更大质量的黑洞之间有紧密的联系。
[Abstract]:Active galaxies are a special class of galaxies in astronomy, whose core is called the (active galactic nuclei AGN) Blazars, one of the most active subclasses of AGNs, which has high luminosity, rapid and large light changes, high polarization, and hypervelocity of light. The strange observation phenomena such as jet pointing observation and extreme physical characteristics. The peculiar properties of blazars reflect the complexity of its structure and physical process. This paper mainly deals with the relationship between jet accretion, mass light relation and multiband radiation. Accretion rate and black hole mass are studied. Firstly, the concept, classification and model of AGNs are briefly introduced, and the mass of black holes, multi-band radiation and jets of AGNs are introduced. Secondly, the observational characteristics and radiation mechanism of (blazar) are introduced, and the Fermi satellite and Fermi source are briefly introduced. In addition, 111 Fermi eau variants (73 FSRQs and 38 BL Lac),) have been collected from the literature to obtain reliable radio nuclear luminosity, wide-line luminosity, thermal luminosity and black hole mass. Our results show that there is an obvious correlation between radio nucleus luminosity and wide-line luminosity, which supports the close relationship between accretion process and relativistic jet. The analysis results of the relation ~ (0.81n) 0.06) C BLR RLogL L are consistent with the theoretical model, which supports that the power of the glowing body jet is derived from the rapidly rotating Kerr black hole, and the magnetic field of the accretion disk leads to the rotation of the black hole. By studying the relationship between black hole mass and intrinsic thermal luminosity, it is supported that the mass-luminosity relationship of Fermi's yaw is a power law, similar to that of a principal ordered star. Next, the evolutionary sequence of the yaw variant is discussed. Finally, 191 Fermi FSRQ samples were collected from the literature. We studied the relationship between accretion rate and multiband luminosity, black hole mass and multiband luminosity. The results are as follows: there is a significant correlation between accretion rate and multiband luminosity, which supports a close relationship between jet formation and accretion. The significant correlation between black hole mass and multispectral luminosity may suggest a close relationship between faster jet and larger mass black hole.
【学位授予单位】：云南师范大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P157.6

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