Other
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1866s&link_type=abstract
Chandra Proposal ID #06708209
Other
Chandra Proposal Id #06708209
Scientific paper
While deep observations of small fields are crucial to study weak distant AGN, all sky shallow surveys are essential for identification of brightest and/or nearby objects. This is possible with INTEGRAL, with large FOV and sensitivity peak above 20 keV where dust obscured and dust free objects are detected equally well. We recently started an all sky survey with INTEGRAL. So far half of the sky at |b|>5d has been scanned and about 70 sources have been detected above 1 mCrab limit. 80% of them are known bright AGN. 8 objects are unidentified and absent from the Rosat All-Sky Survey and AGN catalogs. They are likely obscured AGN. Short Chandra exposure of their 6' error boxes will provide unambiguous identification and absorption columns. This will enable immediate optical follow up and assessment of chosen survey strategy. Being among brightest extragalactic objects, the targets are good for future detailed study with Chandra and other observatories.
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