A search for supernova remnants in the vicinity of pulsars

Astronomy and Astrophysics – Astronomy

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Microwave Emission, Pulsars, Radio Astronomy, Supernova Remnants, Interstellar Gas, Radiant Flux Density, Radio Interferometers, Stellar Evolution

Scientific paper

An area of approximately one square degree was studied around the six pulsars PSR 0329 + 54, PSR 0525 + 21, PSR 0809 + 74, PSR 0823 + 26, PSR 0904 + 77, and PSR 0950 + 08 with a radio telescope at 21 cm wavelength to search for associations between pulsars and extended radio emitting regions. To the sensitivity limit of the telescope, no shell-like sources were detected in any of the pulsar fields. The pulsar was detected in four of the six cases. The unrelated radio sources found in the fields are described. 'Ghost' supernova remnants seem to occur seldom, if at all, and are probably not a solution for the difficulties presented by the apparent association of CP 1919 and the shell source G 55.7 + 3.4.

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