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THE IMPACT OF ACCRETION DISK WINDS ON THE X-RAY SPECTRA OF ACTIVE GALACTIC NUCLEI. II. XSCORT plus HYDRODYNAMIC SIMULATIONS
Schurch, NJ; Done, C; Proga, D
2009
发表期刊ASTROPHYSICAL JOURNAL
卷号694期号:1页码:1-11
通讯作者Schurch, NJ (reprint author), Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China.
摘要We use XSCORT, together with the hydrodynamic accretion disk wind simulation from Proga & Kallman, to calculate the impact that the accretion disk wind has on the X-ray spectra from 108 solar mass black hole active galactic nuclei (AGNs) accreting at 0.5 L/L(Edd). The numerical simulation provides a set of self-consistent physical properties for the outflow that mitigates many of the problems inherent in previous XSCORT simulations. The properties of the resulting spectra depend on the viewing angle and clearly reflect the distinct regions apparent in the original hydrodynamic simulation. Very equatorial lines of sight (LOSs) encounter extremely Compton thick column densities and produce spectra that are dominated by Compton scattering and nearly neutral absorption. Polar LOSs encounter small, highly ionized, column densities, and result in largely featureless spectra. Finally, LOSs that intersect the transition region between these extremes encounter moderately ionized, marginally Compton thick column densities, which imprint a wide range of absorption features on the spectrum. Both polar and transition region LOSs produce spectra that show highly ionized, blueshifted, Fe absorption features that are qualitatively similar to features observed in the X-ray spectra of a growing number of AGNs. The spectra cannot reproduce the > 8 keV lines, or the deep similar to 7-13 keV absorption trough, observed in some high-redshift quasars, although a considerably faster wind may well be able to reproduce these features. The spectra presented here clearly demonstrate that current simulations of line-driven AGN accretion disk winds cannot reproduce the smooth, soft X-ray excess. Furthermore, they predict that high accretion rate (L/L(Edd)) AGNs are likely to be strongly affected by obscuration, in sharp contrast to the clean picture that is generally assumed, based on the observed relation between the opening angle of the molecular torus and AGN luminosity.
文章类型Article
关键词accretion, accretion disks galaxies: active quasars: general radiative transfer X-rays: galaxies
学科领域Astronomy & Astrophysics
DOI10.1088/0004-637X/694/1/1
收录类别SCI
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000264291700001
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被引频次:48[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/311005/225412
专题粒子天体物理中心
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Schurch, NJ,Done, C,Proga, D. THE IMPACT OF ACCRETION DISK WINDS ON THE X-RAY SPECTRA OF ACTIVE GALACTIC NUCLEI. II. XSCORT plus HYDRODYNAMIC SIMULATIONS[J]. ASTROPHYSICAL JOURNAL,2009,694(1):1-11.
APA Schurch, NJ,Done, C,&Proga, D.(2009).THE IMPACT OF ACCRETION DISK WINDS ON THE X-RAY SPECTRA OF ACTIVE GALACTIC NUCLEI. II. XSCORT plus HYDRODYNAMIC SIMULATIONS.ASTROPHYSICAL JOURNAL,694(1),1-11.
MLA Schurch, NJ,et al."THE IMPACT OF ACCRETION DISK WINDS ON THE X-RAY SPECTRA OF ACTIVE GALACTIC NUCLEI. II. XSCORT plus HYDRODYNAMIC SIMULATIONS".ASTROPHYSICAL JOURNAL 694.1(2009):1-11.
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