IRS spectroscopy of type-2 quasars: the relation of IR spectra to X-ray absorption

Details IRS spectroscopy of type-2 quasars: the relation of IR spectra to X-ray absorption IRS spectroscopy of type-2 quasars: the relation of IR spectra to X-ray absorption

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40094f&link_type=abstract

Spitzer Proposal ID #40094

Computer Science

Scientific paper

We wish to compare the infrared spectra of three Compton thin and three Compton thick (or nearly Compton thick) type-2 quasars discovered using Spitzer color selection in the SWIRE-XMM field. All six quasars are in moderately-deep (>20ks) XMM pointings. Spitzer spectra of X-ray selected, Compton thin type-2 quasars are largely featureless, in contrast to those of type-2 quasars selected by Spitzer mid-infrared colors, which show a large range in silicate and PAH strengths. We wish to investigate whether the Compton thick type-2 quasars possess infrared spectra which show more signs of silicate absorption and/or PAH emission, consistent with the X-ray absorption arising outside of the accretion disk and inner torus.

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