ACCRETION DISK TEMPERATURES OF QSOs: CONSTRAINTS FROM THE EMISSION LINES

被引：14

作者：

Bonning, E. W. ^{[1
,2
]}

Shields, G. A. ^{[3
]}

Stevens, A. C. ^{[3
]}

Salviander, S. ^{[3
,4
]}

机构：

[1] Quest Univ Canada, Squamish, BC V8B 0N8, Canada

[2] Yale Univ, Yale Ctr Astron & Astrophys, New Haven, CT 06511 USA

[3] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA

[4] Southwestern Univ, Dept Phys, Georgetown, TX 78626 USA

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 770卷 / 01期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

black hole physics; galaxies: active; quasars: general; ACTIVE GALACTIC NUCLEI; X-RAY SOURCES; BLACK-HOLE; BULGE RELATIONSHIP; QUASARS; CONTINUUM; ULTRAVIOLET; SIZE; EVOLUTION; SPECTRA;

D O I：

10.1088/0004-637X/770/1/30

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We compare QSO emission-line spectra to predictions based on theoretical ionizing continua of accretion disks. The observed line intensities do not show the expected trend of higher ionization with theoretical accretion disk temperature as predicted from the black hole mass and accretion rate. Consistent with earlier studies, this suggests that the inner disk does not reach temperatures as high as expected from standard disk theory. Modified radial temperature profiles, taking account of winds or advection in the inner disk, achieve better agreement with observation. The emission lines of radio-detected and radio-undetected sources show different trends as a function of the theoretically predicted disk temperature.

引用

页数：10

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