An EGRET Pulsar in the Supernova Remnant CTA 1

Physics

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Supernovae, Supernova Remnants, Diffuse (Galactic) Emission And Isolated Neutron Stars, Rx J0007.0+7303, Xmm-Newton Proposal 04035201

Scientific paper

The supernova remnant CTA 1 that falls within the error box of the EGRET source 3EG J0010+7309 contains one of the best X-ray candidates for a radio-quiet gamma-ray pulsar. Previous XMM and Chandra observations of CTA 1 revealed a faint point source embedded within a pulsar wind nebula, and a prominent jet, but were not sensitive enough to detect pulsations. Since the deepest possible radio searches have failed, this proposal for a longer XMM observation represents the only hope for discovering the period of the CTA 1 pulsar. Its spin parameters are necessary to determine its cooling age and rotational energetics, as well as to establish its identification with the gamma-ray source, which will soon be possible in combination with timing data from GLAST.

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