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Fe K alpha line profile in AGNs: average shape and redshift dependence
Mao, WM; Hu C(胡晨); Wang JM(王建民); Zhang S(张澍); Hu, C; Wang, JM; Zhao, G; Zhang, S
2010
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
卷号10期号:9页码:905-914
通讯作者[Mao, Wei-Ming ; Zhao, Gang] Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China ; [Mao, Wei-Ming ; Hu, Chen ; Wang, Jian-Min ; Zhang, Shu] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China ; [Mao, Wei-Ming] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
摘要We collect a sample of 381 (271 type I) active galactic nuclei (AGNs) with XMM-Newton observations for an analysis of the dependence of Fe K alpha profiles on redshifts to test the potential cosmological evolution of spins of supermassive black holes (SMBHs). The sample spans a redshift range of z = 0.0008 - 4.76, which allows us to rebin the sample into 7 redshift groups. Phenomenological analysis of the Fe profile suggested that the line width (sigma) of the narrow or broad Fe line does not show significant changes in redshift range z < 0.3. Using a physical model, we significantly detect a narrow Fe K alpha line at 6.4 keV with an average equivalent width (EW) = 160 eV except for the two largest redshift bins. The EW of the Fe line does not show significant changes. We also find a relativistic broad line in three redshift bins (z < 0.116, 0.056 < z < 0.12 and 0.12 < z < 0.3) with an average EW = 522 eV.
文章类型Article
关键词galaxies: active X-rays: general methods: data analysis
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
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语种英语
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000282015900004
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238713
专题粒子天体物理中心
实验物理中心
作者单位中国科学院高能物理研究所
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Mao, WM,Hu C,Wang JM,et al. Fe K alpha line profile in AGNs: average shape and redshift dependence[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2010,10(9):905-914.
APA Mao, WM.,胡晨.,王建民.,张澍.,Hu, C.,...&Zhang, S.(2010).Fe K alpha line profile in AGNs: average shape and redshift dependence.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,10(9),905-914.
MLA Mao, WM,et al."Fe K alpha line profile in AGNs: average shape and redshift dependence".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 10.9(2010):905-914.
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