Gems in the Chandra Deep Fields: The Nature of Optically Passive X-ray Galaxies (aka XBONGs)

Details Gems in the Chandra Deep Fields: The Nature of Optically Passive X-ray Galaxies (aka XBONGs) Gems in the Chandra Deep Fields: The Nature of Optically Passive X-ray Galaxies (aka XBONGs)

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1751l&link_type=abstract

Chandra Proposal ID #06700607

Computer Science

Chandra Proposal Id #06700607

Scientific paper

Optically Passive X-ray Galaxies (OPXGs), found in great numbers in the Chandra Deep Fields, are luminous X-ray sources with unremarkable optical spectra. It has been alternately suggested they are BL Lac-type objects, highly obscured Seyferts or low luminosity AGN, accreting at a fraction of their Eddington rate. All of these explanations likely apply to some sources, but it is unclear what fraction falls into each category. We propose to study a radio-selected sample of OPXGs which spans a dynamic range of >10,000 in radio power, sampling both the radio-loud and -quiet OPXG populations. In combination with complementary optical and radio observations, we hope to survey the OPXG source population and begin to develop diagnostics which will distinguish between the various OPXG flavors.

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