Optical Variability-Based Identifications of Fermi Blazar Candidates

Details Optical Variability-Based Identifications of Fermi Blazar Candidates Optical Variability-Based Identifications of Fermi Blazar Candidates

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21441713m&link_type=abstract

American Astronomical Society, AAS Meeting #214, #417.13; Bulletin of the American Astronomical Society, Vol. 41, p.686

Astronomy and Astrophysics

Astronomy

Scientific paper

We present potential optical counterparts for unidentified gamma-ray point sources from the first Fermi LAT Bright Source catalog. If these sources are extragalactic in nature (they are all outside the galactic plane), they are expected to be blazars; however, six of the sources do not match current radio catalogs of known blazars. We use the inherently variable nature of blazars to identify variability-based candidates in 30' fields around four of these sources, using multi-epoch optical data from the Palomar-Quest survey, supplemented by the data from the JPL NEAT team processed at the LBNL Nearby Supernova Factory. With follow-up spectroscopy, we hope to confirm or deny these candidates as blazars.

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