On the Origin of Hyperfast Neutron Stars
Abstract
We propose an explanation for the origin of hyperfast neutron stars (e.g. PSR B1508+55, PSR B2224+65, RX J0822-4300) based on the hypothesis that they could be the remnants of a symmetric supernova explosion of a high-velocity massive star (or its helium core) which attained its peculiar velocity (similar to that of the neutron star) in the course of a strong three- or four-body dynamical encounter in the core of a young massive star cluster. This hypothesis implies that the dense cores of star clusters (located either in the Galactic disk or near the Galactic centre) could also produce the so-called hypervelocity stars - ordinary stars moving with a speed of ~ 1 000 km s−1.
- Publication:
-
Dynamical Evolution of Dense Stellar Systems
- Pub Date:
- May 2008
- DOI:
- 10.1017/S1743921308015962
- arXiv:
- arXiv:0712.4230
- Bibcode:
- 2008IAUS..246..365G
- Keywords:
-
- Stars: neutron;
- pulsars: general;
- pulsars: individual (B1508+55);
- galaxies: star clusters;
- methods: n-body simulationss;
- Astrophysics
- E-Print:
- 2 pages, to appear in Dynamical Evolution of Dense Stellar Systems, Proceed. of the IAU Symp. 246 (Capri, Sept. 2007), eds. E.Vesperini, M. Giersz, and A. Sills