Search for TeV Emission from Geminga by VERITAS

Gary Finnegan, for the VERITAS Collaboration

Published 2009-07-30, updated 2012-03-14Version 3

The Geminga gamma ray source was first detected by the SAS-2 gamma-ray satellite observatory and the COS-B x-ray satellite observatory, and has been identified as a radio-quiet pulsar associated with a 300,000 year old supernova remnant. Geminga is one of the brightest GeV sources as seen by the Large Area Telescope on board the Fermi gamma-ray satellite observatory. A ground based detection was accomplished by the Milagro extensive air shower array at energies greater than 20 TeV. During 2007 VERITAS performed observations to search for TeV gamma ray emission from the Geminga pulsar and the region near Geminga. In this paper, we describe these measurements and the new analysis of these observations.