Low-mass X-ray binary evolution and the origin of millisecond pulsars

Details Low-mass X-ray binary evolution and the origin of millisecond pulsars Low-mass X-ray binary evolution and the origin of millisecond pulsars

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...385l..45f&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 385, Feb. 1, 1992, p. L45-L48.

Physics

26

Pulsars, Stellar Evolution, Stellar Mass, Stellar Physics, X Ray Binaries, Cataclysmic Variables, Gamma Ray Bursts, Mass Transfer, Stellar Mass Accretion, Stellar Orbits

Scientific paper

The evolution of low-mass X-ray binaries (LMXBs) is considered. It is shown that X-ray irradiation of the companion stars causes these systems to undergo episodes of rapid mass transfer followed by detached phases. The systems are visible as bright X-ray binaries only for a short part of each cycle, so that their space density must be considerably larger than previously estimated. This removes the difficulty in regarding LMXBs as the progenitors of low-mass binary pulsars. The low-accretion-rate phase of the cycle with the soft X-ray transients is identified. It is shown that 3 hr is likely to be the minimum orbital period for LMXBs with main-sequence companions and it is suggested that the evolutionary endpoint for many LMXBs may be systems which are the sites of gamma-ray bursts.

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