Blazar黑洞自旋能量与红移相关性研究  

A Study of Correlations between Redshifts and Spin Energies of Black Holes in AGN

作　　者：张旭[1] 张雄[1] 

机构地区：[1]云南师范大学物理与电子信息学院,云南昆明650500

出　　处：《天文研究与技术》2015年第3期253-261,共9页Astronomical Research & Technology

基　　金：国家自然科学基金(U1231203);国家自然科学基金(11163007);云南省自然科学基金项目(2010CD046);云南省高能天体物理重点实验室资助

摘　　要：黑洞自旋及其参量能提供黑洞合并及吸积的信息。从文献资料中收集了112个Blazar源,这些源包含了67个FR II射电星系(RG),11个FR II射电噪类星体(RLQ),27个核占优星系(CD)。通过样本数据研究黑洞自旋能量与红移的相关性。研究结果表明:(1)112个Blazar的黑洞自旋能量与红移存在相关性,尤其在爱丁顿磁场条件下(B=BEDD),黑洞自旋能量与红移的相关性最为明显;(2)FR II射电星系(RG)、FR II射电噪类星体(RLQ)、核占优星系(CD)的黑洞自旋能量在3种磁场条件下(B=BEDD,B=104G,B∝j)与红移的相关性强弱上存在差异,但总体趋势较为相似,均呈现正比关系;(3)黑洞自旋能量与红移的强相关性表明,黑洞自旋能量在一定程度上给出黑洞并合与吸积的信息。这些研究结果与其他人用其他方法获得的结果是一致的。We have collected a sample of 112 Blazars. Our sample includes 67 FRII Quasars, 11 FRII Radio-Loud Quasars, and 27 FRII cD galaxies. The Quasars and Radio-Loud Quasars have redshifts from about 0 to about 2. We have analyzed correlations between redshifts and spin energies of black holes for our sampled AGN. The spin energies were calculated using a set of assumptions. Our conclusions are as follows. （ 1 ） The spin energies of the sampled Blazars show appreciable correlations with redshifts; the correlations are most obvious if magnetic-field strengths （B） around the black holes are assumed to follow B =BEDD; （2） The correlations are similar for different types of Blazars and for three different assumptions of magnetic-field strengths （, i. e., B = BEDD, B=104G, and B∝jM） ; （3） The results suggest that spin energies statistically increase with redshifts for black holes in the redshift range of 0 to 3, which is consistent with independent studies of other authors.

关 键 词：BLAZAR 黑洞自旋 自旋能量 红移 相关性 

分 类 号：P157.2[天文地球—天文学]