Discovery of extended emission around the pulsar B0355+54

Details Discovery of extended emission around the pulsar B0355+54 Discovery of extended emission around the pulsar B0355+54

2005-12-07

arxiv.org/abs/astro-ph/0512209v1

Astronomy and Astrophysics

Astrophysics

13 pages, 3 figures submitted to ApJ Letters

Scientific paper

PSR B0355+54 is one of the handful of pulsars that has been observed with both Chandra and XMM-Newton. The analysis of the archival data has revealed the pulsar and a ~30 arcsec compact nebula surrounding it. XMM-Newton also has detected a trail which extends ~6 arcmin and similar to the compact nebula is also counter-aligned with the proper motion of the pulsar. The spectrum of both the pulsar and the extended emission are well described by an absorbed power-law model. The measured flux corresponds to an efficiency of converting the spin-down luminosity into X-rays in the 2-10 keV band of ~0.01% and ~1% for the pulsar and the extended emission, respectively. From the XMM-Newton data we have detected pulsations at the expected radio period. The energetic and the extent of the extended emission can be explained by a Bow-shock formed by the motion of the pulsar through the interstellar medium.

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