The Origin and Motion of PSR J0538+2817 in S147
Abstract
We report on Very Long Baseline Array (VLBA) astrometry and Chandra imaging of PSR J0538+2817 in the supernova remnant S147. We measure a parallax distance of 1.47+0.42-0.27 kpc along with a high-precision proper motion, giving a transverse velocity V⊥=400+114-73 km s-1. A small extended wind nebula is detected around the pulsar; the symmetry axis of this structure suggests that the spin axis lies 12deg+/-4deg from the velocity vector (two-dimensional), but the emission is too faint for robust model-independent statements. The neutron star is hot, consistent with the young ~40 kyr kinematic age. The pulsar progenitor is likely a runaway from a nearby cluster, with NGC 1960 (M36) a leading candidate.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 2007
- DOI:
- 10.1086/510576
- arXiv:
- arXiv:astro-ph/0611068
- Bibcode:
- 2007ApJ...654..487N
- Keywords:
-
- Astrometry;
- Stars: Pulsars: Individual: Alphanumeric: PSR J0538+2817;
- Stars: Kinematics;
- supernovae: individual (S147);
- Astrophysics
- E-Print:
- 20 pages, 6 figures, ApJ accepted