Gamma Ray Emission from the Vicinity of the Supernova Remnant G312.4-0.4

Details Gamma Ray Emission from the Vicinity of the Supernova Remnant G312.4-0.4 Gamma Ray Emission from the Vicinity of the Supernova Remnant G312.4-0.4

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...192.5302c&link_type=abstract

American Astronomical Society, 192nd AAS Meeting, #53.02; Bulletin of the American Astronomical Society, Vol. 30, p.893

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Scientific paper

We discuss the excess gamma ray emission seen from the regions adjacent to the supernova remnant (SNR) G312.4-0.4 in the energy range of 100 MeV to 10 GeV with the EGRET instrument on board the Compton Gamma Ray Observatory. 2EG J1412-6211, which was originally discovered by COS-B (catalog name 2CG 311), is located 0.4 deg. southwest from the center of the radio shell remnant G312.4-0.4. Its connection with the SNR is discussed. Another EGRET source, 2EGS J1418-6049, lies 1.1 deg. northeast from the center of G312.4-0.4. This source coincides with a non-thermal radio source at 843 MHz and a hard x-ray source. Its spectrum extends out to GeV energies. We argue that 2EGS J1418-6049 is transient in nature. Its variablilty makes it unlikely that 2EGS J1418-6049 is associated with G312.4-0.4 or any other SNR or pulsar as suggested by Roberts and Romani (1998).

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