Gamma-ray bursts (GRBs) have puzzled astronomers since their accidental discovery in the
late 1960s. The BATSE detector on the COMPTON-GRO satellite has been detecting one …

▪ Abstract The discovery of counterparts in X-ray and optical to radio wavelengths has
revolutionized the study of γ-ray bursts, until recently the most enigmatic of astrophysical …

We present the results of 3D Newtonian SPH simulations of the merger of a neutron star
binary. The microscopic properties of matter are described by the physical equation of state …

Millisecond pulsars with strong magnetic fields may be formed through several processes,
eg accretion-induced collapse of magnetized white dwarfs, merger of two neutron stars …

We consider fireball models where the ejecta have a range of bulk Lorentz factors, so that
the inner (lower Γ) parts may carry most of the mass, or even most of the energy. The outer …

We discuss the afterglows from the evolution of both spherical and anisotropic fireballs
decelerating in an inhomogeneous external medium. We consider both the radiative and …

Recent months have witnessed dramatic progress in our understanding of short γ-ray burst
(SGRB) sources. There is now general agreement that SGRBs—or at least a substantial …

Long-lived emission, known as afterglow, has now been detected from about a dozen γ-ray
bursts. Distance determinations place the bursts at cosmological distances, with redshifts, z …

We present an analytical approach to calculate the hydrodynamics of the interaction
between a relativistic ejecta and a surrounding medium, whose evolution serves as a model …

Results of 3D, Newtonian hydrodynamic calculations of the last stages of the inspiral and the
final coalescence of neutron star binary systems are described. The focus is on sligthly …