Ablating dwarf model for eclipsing millisecond pulsar 1957 + 20

Details Ablating dwarf model for eclipsing millisecond pulsar 1957 + 20 Ablating dwarf model for eclipsing millisecond pulsar 1957 + 20

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.333..832p&link_type=abstract

Nature (ISSN 0028-0836), vol. 333, June 30, 1988, p. 832-834. Research supported by NSF and Irvine Foundation.

Computer Science

Sound

101

Ablation, Dwarf Stars, Eclipsing Binary Stars, Pulsars, Stellar Models, Companion Stars, Degenerate Matter, Periodic Variations, Stellar Evolution, X Ray Binaries

Scientific paper

It has been proposed that the eclipses in the millisecond pulsar 1957 + 20 are due to a pulsar-excited wind derived from its approximately 0.024 solar mass companion. It is argued here that the companion is a stripped, degenerate hydrogen core being ablated by the pulsar, a process that will be complete in less than about 100 million yr, leaving an isolated millisecond pulsar like 1937 + 21. This interpretation can be tested both by using the pulsar pulses to perform radio soundings of the interface between the two winds and by future optical, X-ray, and gamma-ray observations. The present evolutionary model for this object predicts that there should be no hydrogen-rich, low-mass X-ray binaries with orbital periods less than about five hours.

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