Conversion of Neutron Stars to Strange Stars as a Possible Origin of γ-Ray Bursts

K. S. Cheng and Z. G. Dai
Phys. Rev. Lett. 77, 1210 – Published 12 August 1996
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Abstract

We propose that some neutron stars in low-mass x-ray binaries can accrete sufficient mass to undergo a phase transition to become strange stars. The energy released per conversion event satisfies the requirements of cosmological γ-ray bursts, and the Lorentz factor of the resultant expanding fireball may exceed 5×103 because the strange star has very low baryon contamination. The model burst rate is consistent with observations.

  • Received 21 November 1995

DOI:https://doi.org/10.1103/PhysRevLett.77.1210

©1996 American Physical Society

Authors & Affiliations

K. S. Cheng1 and Z. G. Dai2

  • 1Department of Physics, University of Hong Kong, Hong Kong
  • 2Department of Astronomy, Nanjing University, Nanjing 210093, China

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Vol. 77, Iss. 7 — 12 August 1996

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