CGRaBS: An All-Sky Survey of Gamma-Ray Blazar Candidates

Details CGRaBS: An All-Sky Survey of Gamma-Ray Blazar Candidates CGRaBS: An All-Sky Survey of Gamma-Ray Blazar Candidates

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.3203h&link_type=abstract

American Astronomical Society, AAS Meeting #211, #32.03; Bulletin of the American Astronomical Society, Vol. 39, p.784

Physics

Scientific paper

Many of the 200 high-latitude EGRET sources have been identified with blazars, and it is estimated that 3,000-10,000 blazars will be detected by the LAT on GLAST. In order to identify the most interesting and promising targets for multiwavelength study during the GLAST era, we have assembled the Candidate Gamma-Ray Blazar Survey (CGRaBS), an all-sky survey of 1,625 sources with radio and X-ray properties similar to those of the EGRET blazars. We discuss the sample selection, report on the progress of our optical campaign to secure identifications and redshifts for all targets brighter than R = 23, and comment on the usefulness of these sources for probing AGN/black hole physics. This exercise also enables us to reevaluate associations of blazars with 3EG sources. We find 177 possible associations with 130 3EG sources, some composite, and estimate the fraction of false positives. Our identifications also allow an improved estimate of the redshift and luminosity distributions for these AGN.

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