The "sigma" problem of the Crab pulsar wind

Details The "sigma" problem of the Crab pulsar wind The "sigma" problem of the Crab pulsar wind

2003-09-22

arxiv.org/abs/astro-ph/0309573v1

Astronomy and Astrophysics

Astrophysics

4 pages, to appear in "Young Neutron Stars and Their Environments" (IAU Symposium 218, ASP Conference Proceedings), eds F. Cam

Scientific paper

The conversion of the Crab pulsar wind from one dominated by Poynting flux close to the star to one dominated by particle-born energy at the termination shock is considered. The idea put forward by Coroniti (1990) and criticised by Lyubarsky & Kirk (2001) that reconnection in a striped wind is responsible, is generalised to include faster prescriptions for the a priori unknown dissipation rate. Strong acceleration of the wind is confirmed, and the higher dissipation rates imply complete conversion of Poynting flux into particle-born flux within the unshocked wind.

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