Stellar archaeology and black widow pulsars

Details Stellar archaeology and black widow pulsars Stellar archaeology and black widow pulsars

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.336..557e&link_type=abstract

Nature (ISSN 0028-0836), vol. 336, Dec. 8, 1988, p. 557, 558. Research supported by NSF.

Astronomy and Astrophysics

Astronomy

1

Dark Matter, Neutron Stars, Pulsars, Stellar Physics, Binary Stars, Black Holes (Astronomy), Stellar Cores

Scientific paper

The recent discovery of PSR1957+20 suggests the existence of 'black widow' neutron stars, which destroy their companion by ablation, and supports previous conjectures that isolated millisecond pulsars were spun up by companions that were later disposed of. Any exotic, nondegradable residuum would remain in orbit around the pulsar. It is noted here that a statistically viable sample of millisecond pulsars may present a means of looking for excavated exotic matter at the cores of previously existing stars. The mass threshold of detectability using pulsar timing, 3 x 10 to the -8th solar mass or less, would provide a much stronger constraint than previous considerations and is of astrophysical interest.

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