Spin-up of the hyperon-softened accreting neutron stars
arXiv:astro-ph/0502140 · doi:10.1051/0004-6361:20052832
Abstract
We study the spin-up of the accreting neutron stars with a realistic hyperon-softened equation of state. Using precise 2-D calculations we study the evolutionary tracks of accreting neutron stars in the angular-momentum - frequency plane. In contrast to the case of spinning-down solitary radio-pulsars, where a strong back-bending behavior has been observed, we do not see back-bending phenomenon in the accretion-powered spinning-up case. We conclude that in the case of accretion-driven spin-up the back-bending is strongly suppressed by the mass-increase effect accompanying the angular-momentum increase.
arXiv comment5 pages, 5 figures, accepted by Astronomy & Astrophysics
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- Strangeness in Neutron Stars
- Equation of state of neutron star cores and spin down of isolated pulsars