Local Pulsars; A note on the Birth-Velocity Distribution

Details Local Pulsars; A note on the Birth-Velocity Distribution Local Pulsars; A note on the Birth-Velocity Distribution

1998-06-22

arxiv.org/abs/astro-ph/9806292v1

Astronomy and Astrophysics

Astrophysics

To be published in JAA, 14 pages, 7 figures

Scientific paper

10.1007/BF02714889

We explore a simple model for the representation of the observed distributions of the motions, and the characteristic ages of the local population of pulsars. The principal difference from earlier models is the introduction of a unique value, S, for the kick velocity with which pulsars are born. We consider separately the proper motion components in galactic longitude and latitude, and find that the distributions of the velocity components parallel and perpendicular to the galactic plane are represented satisfactorily by S=200 km/sec, and leave no room for a significant fraction of much higher velocities. The successful proposition of a unique value for the kick velocity may provide an interesting tool in attempts to understand the physical process leading to the expulsion of the neutron star.

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