Broad-line, X-ray Faint AGN: A New Population

Details Broad-line, X-ray Faint AGN: A New Population Broad-line, X-ray Faint AGN: A New Population

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.0511g&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #05.11; Bulletin of the American Astronomical Society, Vol. 34, p.648

Astronomy and Astrophysics

Astronomy

Scientific paper

The Two Micron All Sky Survey (2MASS) has discovered a previously unknown large population ( ~ 0.5° -2) of luminous, red, predominantly broad-line active galactic nuclei (AGN). We present Chandra observations of a well-defined subset consisting of 26 of these objects. All of the objects in the subset are x-ray faint and hard (and therefore presumably obscured), but their x-ray characteristics suggest a complex mix of absorbed and unabsorbed, scattered emission. We examine the mean x-ray spectrum of these objects. We also compare optical and x-ray spectra and the inferred intrinsic luminosity and absorption in the two wavelengths, with particular emphasis on the implication that the classification of an AGN is not valid beyond the waveband in which it was made. This work has been supported by NASA contract NAS8-39073 and NASA Chandra grant AR1-2003X.

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