PSR 1820-11 - A binary pulsar in a wide and highly eccentric orbit

Details PSR 1820-11 - A binary pulsar in a wide and highly eccentric orbit PSR 1820-11 - A binary pulsar in a wide and highly eccentric orbit

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.340..367l&link_type=abstract

Nature (ISSN 0028-0836), vol. 340, Aug. 3, 1989, p. 367-369. Research supported by SERC.

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25

Binary Stars, Eccentric Orbits, Pulsars, Time Measurement, Companion Stars, Neutron Stars, Supernovae

Scientific paper

Timing measurements of the pulsar PSR 1820-11 are presented which show it to be in a binary system with a wide and highly eccentric orbit. This combination of orbital characteristics has not been seen before and presents difficulties for conventional evolutionary scenarios. Pending future measurements of the periastron advance, firm constraints cannot be placed on the nature of the pulsar's companion, but it is expected to be another neutron star.

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