Blazar Counterparts for 3EG Sources at -40 < decl. < 0: Pushing South Through the Bulge

Details Blazar Counterparts for 3EG Sources at -40 < decl. < 0: Pushing South Through the Bulge Blazar Counterparts for 3EG Sources at -40 < decl. < 0: Pushing South Through the Bulge

2004-03-30

arxiv.org/abs/astro-ph/0403692v1

Astrophys.J. 609 (2004) 564-575

Astronomy and Astrophysics

Astrophysics

ApJ accepted

Scientific paper

10.1086/421239

Supplementing existing survey data with VLA observations, we have extended $\gamma-$ray counterpart identifications down to decl. = -40$^\circ$ using our Figure of Merit approach. We find blazar counterparts for $\sim$ 70% of EGRET sources above decl. = -40$^\circ$ away from the Galaxy. Spectroscopic confirmation is in progress, and spectra for $\sim$ two dozen sources are presented here. We find evidence that increased exposure in the bulge region allowed EGRET to detect relatively faint blazars; a clear excess of non-blazar objects in this region however argues for an additional (new) source class.

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