Quasar Disk Temperatures: Lessons from the Lines

Details Quasar Disk Temperatures: Lessons from the Lines Quasar Disk Temperatures: Lessons from the Lines

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21642001s&link_type=abstract

American Astronomical Society, AAS Meeting #216, #420.01; Bulletin of the American Astronomical Society, Vol. 41, p.831

Astronomy and Astrophysics

Astronomy

Scientific paper

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 higher accretion disk temperature. This suggests that, at least for accretion rates close to the Eddington limit, the inner disk does not reach temperatures as high as expected from standard disk theory. Modified radial temperature profiles, including some models previously proposed in the literature, achieve better agreement with observation.

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