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arXiv · 1803.03592

Discovery of a radio nebula around PSR J0855-4644

C. Maitra·S. Roy·F. Acero·Y. Gupta
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Abstract

We report the discovery of a diffuse radio emission around PSR J0855--4644 using an upgraded GMRT (uGMRT) observation at 1.35 GHz. The radio emission is spatially coincident with the diffuse X-ray pulsar wind nebula (PWN) seen with XMM but is much larger in extent compared to the compact axisymmetric PWN seen with Chandra. The morphology of the emission, with a bright partial ring-like structure and two faint tail-like features strongly resembles a bow shock nebula, and indicates a velocity of 100 km/s through the ambient medium. We conclude that the emission is most likely to be associated with the radio PWN of PSR J0855-4644. From the integrated flux density, we estimate the energetics of the PWN.

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C. Maitra, S. Roy, F. Acero, Y. Gupta. 2018-03-09. Discovery of a radio nebula around PSR J0855-4644. https://doi.org/10.1093/mnrasl/sly038

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