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A Multi-wavelength study of the Pulsar PSR B1929+10 and its X-ray trail

Werner Becker·Michael Kramer·Axel Jessner·Ronald E. Taam·Jian J. Jia·Kwong S. Cheng·Roberto Mignani·Alberto Pellizzoni·Andrea de Luca·Agnieszka Slowikowska·Patrizia Caraveo
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Abstract

We report on the emission properties of PSR B1929+10 and its putative X-ray trail from a multi-wavelength study performed with XMM-Newton, the ESO NTT, the HST, the Effelsberg 100m Radio Telescope and the Jodrell Bank Radio Observatory. The XMM-Newton observations confirm the existence of the diffuse emission with a trail morphology lying in a direction opposite to the transverse motion of the pulsar. The trail has a length of ~15 arcmin. Its spectrum is non-thermal and produced by electron-synchrotron emission in the shock between the pulsar wind and the surrounding medium. Assuming that the electron lifetime against synchrotron cooling is comparable to the source transit time over the X-ray trail length, the magnetic field strength in the trail emitting region is inferred to be ~5 uG. Inspecting data from the Effelsberg 11cm radio continuum survey of the Galactic plane we discovered an elongated feature apparently coincident with the X-ray trail. The emission properties observed from PSR 1929+10 are found to finally challenge the picture of the emission properties of old non-recycled rotation powered pulsars. Both, the temporal and spectral X-ray emission properties of PSR 1929+10 are in excellent agreement with a non-thermal and, thus, magnetospheric radiation dominated emission scenario. A flux contribution from the thermal emission of heated polar caps of ~7% is inferred from a best fitting composite Planckian and power law spectral model. The X-ray pulse profile is found to be markedly different from the broad sinusoidal pulse profile seen in the low statistic ROSAT data. Simulations in the framework of an outer-gap emission model are able to reproduce the observed X-ray pulse profile and its phase relation relative to the radio pulse.

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Werner Becker, Michael Kramer, Axel Jessner, Ronald E. Taam, Jian J. Jia, Kwong S. Cheng, Roberto Mignani, Alberto Pellizzoni, Andrea de Luca, Agnieszka Slowikowska, Patrizia Caraveo. 2006-03-16. A Multi-wavelength study of the Pulsar PSR B1929+10 and its X-ray trail. https://doi.org/10.1086/504458

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