Magnetic-field decay and pulsar cooling

Details Magnetic-field decay and pulsar cooling Magnetic-field decay and pulsar cooling

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nciml..41..119l&link_type=abstract

Nuovo Cimento, Lettere, Serie 2, vol. 41, Sept. 22, 1984, p. 119-122.

Physics

Pulsars, Stellar Evolution, Stellar Magnetic Fields, Stellar Temperature, Decay Rates, Magnetic Flux, Ohmic Dissipation, Stellar Luminosity

Scientific paper

The role of magnetic-field collapse in theoretical models of pulsar cooling is investigated. The decay time of the magnetic field from an original value of at least 5 TG is estimated as about 1 Myr on the basis of observations of pulsar periods and their time derivatives, whereas for most neutron stars it is greater than 10 Myr due to the high electrical conductivity of the relevant regions. If this pulsar field-decay time is confirmed, a significant field-decay contribution (as ohmic losses) to the overall photon luminosity of the pulsar is to be expected for pulsars more than 100,000 yr old.

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