A COMPARISON OF HARD X-RAY PHOTON INDICES AND IRON K alpha EMISSION LINES IN X-RAY LUMINOUS NARROW- AND BROAD-LINE SEYFERT 1 GALAXIES
Zhou, XL; Zhang SN(张双南); Zhang, SN
刊名ASTROPHYSICAL JOURNAL LETTERS
2010
卷号713期号:1页码:L11-L15
关键词accretion, accretion disks line: profiles surveys X-rays: galaxies
学科分类Astronomy & Astrophysics
DOI10.1088/2041-8205/713/1/L11
通讯作者[Zhou, Xin-Lin] Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China ; [Zhang, Shuang-Nan] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China ; [Zhang, Shuang-Nan] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA
文章类型Article
英文摘要We use publicly available XMM-Newton data to systematically compare the hard X-ray photon indices, Gamma(2-10) (keV), and the iron K alpha emission lines of narrow-and broad-line Seyfert 1 (NLS1 and BLS1) galaxies. We compile a flux-limited (f(2-10) (keV) >= 1x10(-1)2 erg s(-1) cm(-2)) sample including 114 radio-quiet objects, with the 2-10 keV luminosity ranging from 10(41) to 10(45) erg s(-1). Our main results are: (1) NLS1s and BLS1s show similar luminosity distributions; (2) the weighted means of Gamma(2-10 keV) of NLS1s, BLS1s, and the total sample are 2.04+/-0.04, 1.74+/-0.02, and 1.84+/-0.02, respectively; a significant anti-correlation between Gamma(2-10 keV) and FWHMH beta suggests that Gamma(2-10 keV) > 2.0 may be taken to indicate the X-ray luminous NLS1 type; (3) the 6.4 keV narrow iron K alpha lines from NLS1s are generally weaker than that from BLS1s; this would indicate a smaller covering factor of the dusty tori in NLS1s if the line emission originates from the inner boundary region of the dusty torus in an active galactic nucleus; and (4) all the broadened iron K alpha lines with intrinsic width sigma > 0.5 keV correspond to FWHMH beta <= 4000 km s(-1).
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
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语种英语
WOS记录号WOS:000276594900003
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被引频次:16[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/311005/240240
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
作者单位中国科学院高能物理研究所
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Zhou, XL,Zhang SN,Zhang, SN. A COMPARISON OF HARD X-RAY PHOTON INDICES AND IRON K alpha EMISSION LINES IN X-RAY LUMINOUS NARROW- AND BROAD-LINE SEYFERT 1 GALAXIES[J]. ASTROPHYSICAL JOURNAL LETTERS,2010,713(1):L11-L15.
APA Zhou, XL,张双南,&Zhang, SN.(2010).A COMPARISON OF HARD X-RAY PHOTON INDICES AND IRON K alpha EMISSION LINES IN X-RAY LUMINOUS NARROW- AND BROAD-LINE SEYFERT 1 GALAXIES.ASTROPHYSICAL JOURNAL LETTERS,713(1),L11-L15.
MLA Zhou, XL,et al."A COMPARISON OF HARD X-RAY PHOTON INDICES AND IRON K alpha EMISSION LINES IN X-RAY LUMINOUS NARROW- AND BROAD-LINE SEYFERT 1 GALAXIES".ASTROPHYSICAL JOURNAL LETTERS 713.1(2010):L11-L15.
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