Observational Insights Into the Dependence of Quasar Accretion Disk Structure on Black Hole Mass and Accretion Rate

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Observational Insights Into the Dependence of Quasar Accretion Disk Structure on Black Hole Mass and Accretion Rate. / Kelly, Brandon C.; Bechtold, J.; Trump, J. R.; Vestergaard, M.; Siemiginowska, A.

In: Bulletin of the American Astronomical Society, Vol. 211, 01.12.2007, p. 947-.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Kelly, BC, Bechtold, J, Trump, JR, Vestergaard, M & Siemiginowska, A 2007, 'Observational Insights Into the Dependence of Quasar Accretion Disk Structure on Black Hole Mass and Accretion Rate', Bulletin of the American Astronomical Society, vol. 211, pp. 947-. <http://adsabs.harvard.edu/abs/2007AAS...21111804K>

APA

Kelly, B. C., Bechtold, J., Trump, J. R., Vestergaard, M., & Siemiginowska, A. (2007). Observational Insights Into the Dependence of Quasar Accretion Disk Structure on Black Hole Mass and Accretion Rate. Bulletin of the American Astronomical Society, 211, 947-. http://adsabs.harvard.edu/abs/2007AAS...21111804K

Vancouver

Kelly BC, Bechtold J, Trump JR, Vestergaard M, Siemiginowska A. Observational Insights Into the Dependence of Quasar Accretion Disk Structure on Black Hole Mass and Accretion Rate. Bulletin of the American Astronomical Society. 2007 Dec 1;211:947-.

Author

Kelly, Brandon C. ; Bechtold, J. ; Trump, J. R. ; Vestergaard, M. ; Siemiginowska, A. / Observational Insights Into the Dependence of Quasar Accretion Disk Structure on Black Hole Mass and Accretion Rate. In: Bulletin of the American Astronomical Society. 2007 ; Vol. 211. pp. 947-.

Bibtex

@article{e9aba7b5effa4acaa3eeb26b27200afc,
title = "Observational Insights Into the Dependence of Quasar Accretion Disk Structure on Black Hole Mass and Accretion Rate",
abstract = "I will discuss recent work on using the X-ray and optical properties of a sample of 318 radio-quiet quasars to investigate the dependence quasar accretion disk structure on black hole mass and accretion rate. Specifically, we studied the dependence of the ratio of quasar optical flux to X-ray flux on black hole mass and Eddington ratio, as well as the dependence of the X-ray spectral slope on black hole mass and Eddington ratio. We find evidence that quasars emit a smaller fraction of their bolometric luminosity in the X-rays as black hole mass and accretion rate increase. In addition, we find evidence that the X-ray spectral slope displays a non-monotonic dependence on black hole mass and accretion rate. I will discuss our results within the context of accretion models with comptonizing corona, and discuss the implications for quasar feedback. This work was supported in part by NSF grant AST03-07384.",
author = "Kelly, {Brandon C.} and J. Bechtold and Trump, {J. R.} and M. Vestergaard and A. Siemiginowska",
year = "2007",
month = dec,
day = "1",
language = "English",
volume = "211",
pages = "947--",
journal = "American Astronomical Society. Bulletin",
issn = "0002-7537",
publisher = "American Astronomical Society",

}

RIS

TY - JOUR

T1 - Observational Insights Into the Dependence of Quasar Accretion Disk Structure on Black Hole Mass and Accretion Rate

AU - Kelly, Brandon C.

AU - Bechtold, J.

AU - Trump, J. R.

AU - Vestergaard, M.

AU - Siemiginowska, A.

PY - 2007/12/1

Y1 - 2007/12/1

N2 - I will discuss recent work on using the X-ray and optical properties of a sample of 318 radio-quiet quasars to investigate the dependence quasar accretion disk structure on black hole mass and accretion rate. Specifically, we studied the dependence of the ratio of quasar optical flux to X-ray flux on black hole mass and Eddington ratio, as well as the dependence of the X-ray spectral slope on black hole mass and Eddington ratio. We find evidence that quasars emit a smaller fraction of their bolometric luminosity in the X-rays as black hole mass and accretion rate increase. In addition, we find evidence that the X-ray spectral slope displays a non-monotonic dependence on black hole mass and accretion rate. I will discuss our results within the context of accretion models with comptonizing corona, and discuss the implications for quasar feedback. This work was supported in part by NSF grant AST03-07384.

AB - I will discuss recent work on using the X-ray and optical properties of a sample of 318 radio-quiet quasars to investigate the dependence quasar accretion disk structure on black hole mass and accretion rate. Specifically, we studied the dependence of the ratio of quasar optical flux to X-ray flux on black hole mass and Eddington ratio, as well as the dependence of the X-ray spectral slope on black hole mass and Eddington ratio. We find evidence that quasars emit a smaller fraction of their bolometric luminosity in the X-rays as black hole mass and accretion rate increase. In addition, we find evidence that the X-ray spectral slope displays a non-monotonic dependence on black hole mass and accretion rate. I will discuss our results within the context of accretion models with comptonizing corona, and discuss the implications for quasar feedback. This work was supported in part by NSF grant AST03-07384.

M3 - Journal article

VL - 211

SP - 947-

JO - American Astronomical Society. Bulletin

JF - American Astronomical Society. Bulletin

SN - 0002-7537

ER -

ID: 229915740