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A new class of radio pulsars
Sufficiently low magnetic field neutron stars which accrete for long times from a surrounding keplerian disk can be spun up to millisecond periods. After accretion ceases, such stars could become
Vortex creep and the internal temperature of neutron stars. I - General theory
The theory of a neutron star superfluid coupled to normal matter via thermal creep against pinning forces is developed in some detail. General equations of motion for a pinned rotating superfluid and
Free precession of neutron stars: Role of possible vortex pinning
Vortex pinning affects neutron stellar free precession by modifying its frequency and geometry, in a gyroscopic effect. For neutron stars with low oblateness, the free precession frequency is given
Does mass accretion lead to field decay in neutron stars?
WHETHER or not neutron-star magnetic fields decay is a matter of current debate. The recent observation1,2 of cyclotron lines from γ-ray-burst sources, thought to be relatively old neutron stars,
Orbital Period Variability in the Eclipsing Pulsar Binary PSR B1957+20: Evidence for a Tidally Powered Star
Recent observations indicate that the eclipsing pulsar binary PSR B1957+20 undergoes alternating epochs of orbital period increase and decrease. We apply a model developed to explain orbital period
Vortex creep and the internal temperature of neutron stars. II - Vela pulsar
The observed complex postglitch behavior of the Vela pulsar is explained as resulting from coupling of the crust to crustal neutron superfluid, specifically that part of the superfluid in which
Accretion turnoff and rapid evaporation of very light secondaries in low-mass X-ray binaries
The illumination of companion stars in very low mass X-ray binaries by various kinds of radiation from the neighborhood of the neutron star after accretion has terminated or during accretion is
Is GX5 – 1 a millisecond pulsar?
The bright galactic bulge source GX5–1 (4U1758–250) has recently been observed1 to exhibit quasi-periods between 25 and 50 ms, with a correlation between the corresponding frequencies f and the count
Quasi-periodic oscillations in bright galactic-bulge X-ray sources
Quasi-periodic oscillations with frequencies in the range 5–50 Hz have recently been discovered in X-rays from two bright galactic-bulge sources and ScoX-1. We propose that these sources are weakly
Upper Bounds on Collisional Penrose Processes Near Rotating Black Hole Horizons
In this paper, we develop a general formalism for calculating energies of particles which escape to infinity after a collision in black-hole ergospheres. A few examples, in particular the Compton