Discovery of the young, energetic radio pulsar PSR J1105-6107

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Pulsars, Gamma-Ray Sources, Gamma-Ray Bursts, Gamma-Ray, Supernova Remnants

Scientific paper

We report on the discovery and follow-up timing observations of the 63 ms radio pulsar, PSR J1105-6107. The pulsar is young, having a characteristic age of only 63 kyr, and its spin-down luminosity, 2.5×1036 erg s-1, is in the top 1% of all those known. Given its estimated distance of 7 kpc, PSR J1105-6107 is likely to be observable at high energies. Indeed, it is coincident with the known CGRO/EGRET source 2EG J1103-6106 we consider the possible association and conclude that it is likely. We also note the pulsar's apparent proximity to the supernova remnant G290.1-0.8 (MSH 11-61A); an association requires that the pulsar's transverse velocity be ~650 km s-1 directed away from the remnant center, assuming a distance of 7 kpc and that the characteristic age is the true age.

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