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Astron. Astrophys. 345, L14-L16 (1999)

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Letter to the Editor

Neutrino emission due to proton pairing in neutron stars

A.D. Kaminker 1, P. Haensel 2 and D.G. Yakovlev 1

1 Ioffe Physical Technical Institute, Politekhnicheskaya 26, 194021 St.-Petersburg, Russia
2 N. Copernicus Astronomical Center, Bartycka 18, PL-00-716 Warszawa, Poland (haensel@camk.edu.pl)

Received 8 March 1999 / Accepted 19 March 1999

Abstract

We calculate the neutrino energy emission rate due to singlet-state pairing of protons in the neutron star cores taking into account the relativistic correction to the non-relativistic rate. The non-relativistic rate is numerically small, and the relativistic correction appears to be about 10-50 times larger. It plays thus the leading role, reducing great difference between the neutrino emissions due to pairing of protons and neutrons. The results are important for simulations of neutron star cooling.

Key words: stars: neutron – dense matter

Send offprint requests to: P. Haensel

This article contains no SIMBAD objects.

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© European Southern Observatory (ESO) 1999

Online publication: April 12, 1999
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