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Title:
On the Origin of Hyperfast Neutron Stars
Authors:
Gvaramadze, V. V.; Gualandris, A.; Portegies Zwart, S.
Affiliation:
AA(Sternberg Astronomical Institute, Moscow State University, Universitetskij Pr. 13, Moscow 119992, Russia ), AB(Center for Computational Relativity and Gravitation, Rochester Institute of Technology, 78 Lomb Memorial Drive, Rochester, NY 14623, USA ; Astronomical Institute ‘Anton Pannekoek’ and Section Computational Science, Amsterdam University, Kruislaan 403, 1098 SJ, Amsterdam, the Netherlands ), AC(Astronomical Institute ‘Anton Pannekoek’ and Section Computational Science, Amsterdam University, Kruislaan 403, 1098 SJ, Amsterdam, the Netherlands )
Publication:
Dynamical Evolution of Dense Stellar Systems, Proceedings of the International Astronomical Union, IAU Symposium, Volume 246, p. 365-366
Publication Date:
05/2008
Origin:
CUP
Keywords:
Stars: neutron, pulsars: general, pulsars: individual (B1508+55), galaxies: star clusters, methods: n-body simulationss
DOI:
10.1017/S1743921308015962
Bibliographic Code:
2008IAUS..246..365G

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.
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