Physics
Scientific paper
Oct 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..797...95d&link_type=abstract
INTERACTING BINARIES: Accretion, Evolution, and Outcomes. AIP Conference Proceedings, Volume 797, pp. 95-102 (2005).
Physics
Neutron Stars, Pulsars, X-Ray Binary Stars, Accretion, Stellar Magnetism, Neutron Stars, Pulsars, X-Ray Binaries, Accretion And Accretion Disks, Magnetic And Electric Fields, Polarization Of Starlight
Scientific paper
Although most of the proposed equations of state predict minimum spin periods well below one millisecond if more than about 0.3 solar masses are accreted onto a low magnetized neutron star through a Keplerian accretion disc, the spin periods of the recently discovered accreting millisecond pulsars all cluster in the quite narrow range between 1.7 and 5.4 ms; these spin periods are uncomfortably higher than the theoretical predictions. We propose and discuss here the possibility that emission due to a magneto-dipole rotator is relevant even during the accretion phase in fast-spinning neutron stars; this mechanism is able to explain the quite long spin periods observed in both low mass X-ray binaries and millisecond radio pulsars.
Burderi Luciano
D'Antona Franca
di Salvo Tiziana
Robba Natale
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