活动星系核黑洞质量、偏振及喷流特性研究

发布时间：2018-01-03 17:14

本文关键词：活动星系核黑洞质量、偏振及喷流特性研究　出处：《云南师范大学》2016年硕士论文　论文类型：学位论文

【摘要】：本文对费米耀变体偏振特性和聚束效应的关系,活动星系核中心黑洞质量、喷流和吸积的关系,平谱射电类星体(FSRQs)和FRI型射电星系,蝎虎天体(BL Lacs)和FRII型射电星系的统一模型等一系列问题进行了主要的研究。首先,简单介绍了活动星系核的一些基本特性,例如活动星系核的分类和统一模型;活动星系核中心黑洞质量的计算方法;活动星系核的偏振、喷流和吸积;费米伽马射线空间望远镜。随后,通过费米伽马射线望远镜探测的耀变体样本,我们研究了费米耀变体(FBlazars)和非费米耀变体(NFBlazars)的偏振和聚束效应的特性,得到如下的结论:(1)费米耀变体具有高的核主导参数和偏振比非费米耀变体;(2)费米FSRQs的核主导参数和f(聚束光度比上非聚束光度)比费米BL Lacs的低;(3)在偏振和多普勒因子的关系图表中,费米FSRQs有,费米BL Lacs有。上述结果表明:偏振和聚束效应之间有关系;聚束效应和喷流模型导致了费米FSRQs和费米BL Lacs的偏振和核主导参数的不同。此外,我们研究了费米耀变体和射电星系的喷流功率与黑洞质量和吸积率之间的关系。得到如下结论:(1)FSRQs和FRII型高激发射电星系(HEG)的喷流功率依靠于黑洞质量,这个结果表明FSRQs和FRII-HEG在辐射压主导的区域。BL Lacs和FRI型低激发射电星系(LEG)的喷流功率依靠于吸积率,这个结果表明BL Lacs和FRI-LEG在气体压主导的区域;(2)大多数的吸积模式是不同的。最后,我们研究了费米和非费米耀变体(Blazars)的喷流功率和吸积之间的关系。结果如下:(1)费米和非费米耀变体间的红移,黑洞质量和宽线光度的分布有显著性差异;(2)和非费米耀变体比,费米耀变体有高的核主导参数,这个结果表明费米耀变体有强的聚束效应;(3)费米和非费米耀变体的喷流功率和宽线光度之间的强相关性表明喷流和吸积之间有紧密的联系;(4)费米和非费米耀变体的吸积和黑洞质量可能有不同的贡献对它们的喷流功率。
[Abstract]:This paper deals with the relationship between the polarization characteristics of Fermiyao variant and the bunching effect, the mass of the black hole at the center of the active galaxy nucleus, the relationship between jet and accretion, the flat-spectrum radio quasar FSRQs) and the FRI type radio galaxy. BL-Lacs) and the unified model of FRII radio galaxies are studied in this paper. Firstly, some basic characteristics of AGNs are briefly introduced. For example, the classification and unified model of active galactic nuclei; A method for calculating the mass of a black hole at the center of an active galaxy nucleus; Polarization, jet and accretion of active galactic nuclei; Fermi Gamma-ray Space Telescope. Subsequently, a sample of a brilliant variety detected through the Fermi Gamma-Ray Telescope. The polarization and bunching effects of FBlazars and NFBlazars) have been studied. The following conclusions are obtained: 1) Fermiyao variant has high nuclear dominant parameter and polarization ratio. (2) the nuclear dominant parameters of Fermi FSRQs are lower than those of Fermi BL Lacs. (3) in the diagram of the relationship between polarization and Doppler factor, Fermi FSRQs and Fermi BL Lacs have. The above results show that there is a relationship between polarization and bunching effect. The spotlight effect and jet model lead to the difference of polarization and nuclear dominant parameters between Fermi FSRQs and Fermi BL Lacs. We have studied the relationship between jet power of Fermiyao variants and radio galaxies and black hole mass and accretion rate. The following conclusions are obtained: 1 FSRQs and FRII type highly excited radio galaxies (HEGs). The power of the jet depends on the mass of the black hole. The results show that the jet power of FSRQs and FRII-HEG in the radiation-pressure-dominated region. BL Lacs and FRI type low excited radio galaxy (LEG) depends on the accretion rate. The results show that BL Lacs and FRI-LEG are in the region dominated by gas pressure. Most accretion patterns are different. Finally. We have studied the relationship between jet power and accretion of Fermi and non-Fermiyao variants. The results are as follows: 1) Redshift between Fermi and non-Fermiyao variants. The distribution of black hole mass and wide-line luminosity is significantly different. Compared with the non-Fermiyao variant, the Fermiyao variant has a high nuclear dominant parameter, which indicates that the Fermiyao variant has a strong bunching effect. 3) the strong correlation between jet power and wide line luminosity of Fermi and non-Fermiyao variants indicates that there is a close relationship between jet and accretion. 4) the accretion and black hole mass of Fermi and non-Fermiyao variants may have different contributions to their jet power.
【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】：P145.8;P157.6

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