The Sheep Survey: what Kind of Objects Make the X-Ray Background?

Details The Sheep Survey: what Kind of Objects Make the X-Ray Background? The Sheep Survey: what Kind of Objects Make the X-Ray Background?

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop.1029n&link_type=abstract

Chandra Proposal ID #03900608

Physics

Chandra Proposal Id #03900608

Scientific paper

Chandra deep surveys have detected the discrete source populations that make up the X-ray background, but the objects are too faint to characterize in detail. Much brighter example have been found in our large area 5-10 keV survey with ASCA (SHEEP). Many are difficult to identify optically, however, given the large positional uncertainty. We propose to use Chandra to determine unambiguous optical counterparts with 5ks snapshots of the 35 sources not detected by ROSAT. We further propose to spectroscopically identify these counterparts using the NOAO 4m telescopes. Our scientific goals are to determine the nature of the new populations making up the X-ray background, and revisit the phenomenology of AGN in the light of these new classes of object.

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