Evidence for spontaneous magnetic field decay in an isolated neutron star

Details Evidence for spontaneous magnetic field decay in an isolated neutron star Evidence for spontaneous magnetic field decay in an isolated neutron star

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..410..658w&link_type=abstract

The fourth compton symposium. AIP Conference Proceedings, Volume 410, pp. 658-662 (1997).

Computer Science

Neutron Stars, Pulsars, Accretion And Accretion Disks, Magnetic And Electric Fields, Polarization Of Starlight

Scientific paper

The recently discovered source RX J0720.4-3125 is most likely an old isolated neutron star accreting from surrounding media. With this interpretation, we argue that if it was born as a canonical pulsar with spin period Pi<~0.5 s, the magnetic field on this star must have decayed since birth. With a birth field Bi~1012 G, we find decay timescales >~107 yrs for power law decay or >~108 yrs for exponential decay. A measured period derivative Ṗ<~10-16 s s-1 would be consistent with an old accreting isolated neutron star.

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