X-ray Spectrum of Super-Eddington Accretion Disk and Age of Supermassive Black Holes

Details X-ray Spectrum of Super-Eddington Accretion Disk and Age of Supermassive Black Holes X-ray Spectrum of Super-Eddington Accretion Disk and Age of Supermassive Black Holes

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf..325k&link_type=abstract

SF2A-2002: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 24-29, 2002, Eds.: F. Combes and D. Barret,

Astronomy and Astrophysics

Astrophysics

Scientific paper

Effects of electron scattering (opacity and Comptonization) on the emergent X-ray spectrum from super-Eddington accretion flows (the so called slim disks) are examined. The model is applied to Narrow-Line Seyfert 1 galaxies (NLS1s) to estimate their accretion rates. We found that a NLS1, PG 1448+273, has an extremely large accretion rate: about 1000 L-Edd / c**2. This implys that this object is really young: its inferred age (black-hole mass divided by the accretion rate) is 10**6 years.

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