Temperature, distance and cooling of the Vela pulsar.

Details Temperature, distance and cooling of the Vela pulsar. Temperature, distance and cooling of the Vela pulsar.

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996rftu.proc..173p&link_type=abstract

International Conference on X-ray Astronomy and Astrophysics: Röntgenstrahlung from the Universe, p. 173 - 174

Astronomy and Astrophysics

Astrophysics

15

Pulsars: Cooling, Pulsars: Distances, Pulsars: Vela, Pulsars: Temperatures, Neutron Stars: Cooling

Scientific paper

The authors use models of magnetized hydrogen atmospheres to fit the soft X-ray thermal spectrum of the Vela pulsar obtained by ROSAT. The distance and hydrogen column density required by the authors' fits are in good agreement with other independent estimates and can be considered as an argument for the presence of hydrogen at the surface of this pulsar. The low temperature obtained, Te∞ =(7.85±0.25)×105K, is below the predictions of the "standard" model of neutron star cooling and strengthens previous claims for the necessity of the occurrence of fast neutrino cooling in this neutron star.

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