A new way to measure supermassive black hole spin in accretion disc-dominated active galaxies

doi:10.1093/mnras/stt1138

IHEP OpenIR > 粒子天体物理中心

	A new way to measure supermassive black hole spin in accretion disc-dominated active galaxies
	Done, C; Jin, C; Middleton, M; Ward, M
	2013
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (IF:4.961[JCR-2016],4.62[5-Year])
ISSN	0035-8711
EISSN	1365-2966
卷号	434 期号:3 页码:1955-1963
摘要	We show that disc continuum fitting can be used to constrain black hole spin in a subclass of narrow-line Seyfert 1 (NLS1) active galactic nuclei as their low mass and high mass accretion rate means that the disc peaks at energies just below the soft X-ray bandpass. We apply the technique to the NLS1 PG1244+026, where the optical/UV/X-ray spectrum is consistent with being dominated by a standard disc component. This gives a best estimate for black hole spin which is low, with a firm upper limit of a(*) < 0.86. This contrasts with the recent X-ray determinations of (close to) maximal black hole spin in other NLS1 based on relativistic smearing of the iron profile. While our data on PG1244+026 do not have sufficient statistics at high energy to give a good measure of black hole spin from the iron line profile, cosmological simulations predict that black holes with similar masses have similar growth histories and so should have similar spins. This suggests that there is a problem either in our understanding of disc spectra, or/and X-ray reflection or/and the evolution of black hole spin.
关键词	accretion, accretion discs black hole physics galaxies: Seyfert ultraviolet: galaxies X-rays: galaxies
学科领域	Astronomy & Astrophysics
DOI	10.1093/mnras/stt1138
收录类别	SCI ; INSPIREHEP ; ADS
语种	英语
WOS记录号	WOS:000323639900012
ADS Bibcode	2013MNRAS.434.1955D
ADS URL	https://ui.adsabs.harvard.edu/abs/2013MNRAS.434.1955D
ADS引文	https://ui.adsabs.harvard.edu/abs/2013MNRAS.434.1955D/citations
INSPIRE ID	1239305
INSPIRE URL	https://inspirehep.net/literature/1239305
引用统计	正在获取... 被引频次：48 [INSPIRE] 被引频次：71 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/224178
专题	粒子天体物理中心
推荐引用方式 GB/T 7714	Done, C,Jin, C,Middleton, M,et al. A new way to measure supermassive black hole spin in accretion disc-dominated active galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,434(3):1955-1963.
APA	Done, C,Jin, C,Middleton, M,&Ward, M.(2013).A new way to measure supermassive black hole spin in accretion disc-dominated active galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,434(3),1955-1963.
MLA	Done, C,et al."A new way to measure supermassive black hole spin in accretion disc-dominated active galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 434.3(2013):1955-1963.