A new class of radio pulsars

Details A new class of radio pulsars A new class of radio pulsars

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.300..728a&link_type=abstract

Nature, vol. 300, Dec. 23, 1982, p. 728-730. Research supported by the Scientific and Technical Research Council of Turkey

Astronomy and Astrophysics

Astronomy

456

Pulsars, Radio Astronomy, Accretion Disks, Binary Stars, Gamma Rays, Stellar Mass Accretion, X Rays

Scientific paper

A new class of spun-up radio pulsars with short periods, long apparent ages, and pulsed optical, X-ray, and gamma ray fluxes significantly below those expected for canonical pulsars with similar periods is reported. Scenarios for the formation of such a pulsar, in which a neutron star accretes from a Keplerian accretion disk initially fed by a companion, are discussed. Because of their long spin-down lifetimes, such pulsars would probably be observable if their birth rate exceeded even 10 to the -4th that of the canonical ones. It is proposed that the recently discovered millisecond pulsar 4C21.53 belongs to this class, together with the binaries PSRs 1913+16, 0820+02, and 0655+64, as well as possibly several isolated pulsars such as PSRs 1952+29 and 1804-08.

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