Hot and strong big blue bumps in AGN

Details Hot and strong big blue bumps in AGN Hot and strong big blue bumps in AGN

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..431..207p&link_type=abstract

Accretion processes in astrophysical systems: Some like it hot! - eigth astrophysics conference. AIP Conference Proceedings, Vo

Astronomy and Astrophysics

Astrophysics

Quasars, Active Or Peculiar Galaxies, Objects, And Systems, Infall, Accretion, And Accretion Disks, Astronomical Observations

Scientific paper

We highlight the cases of three AGN with unusually strong big blue bump components. E1346+266 (z=0.92) has the strongest ultrasoft X-ray component identified to date and pushes accretion disc models to their high-T, high-luminosity limits. RE J1034+396 also has a very hot BBB (kTbrem~400 eV) but its luminosity is 3 orders of magnitude lower; its hard X-ray spectrum is relatively weak and the optical/UV continuum appears to be dominated by a non-thermal component. The BBB of the third AGN, RE J2248-511, is cooler but is unusually strong nonetheless and appears as a `true soft X-ray excess' over a normal optical to X-ray continuum.

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