▪ Abstract Study of radio supernovae over the past 20 years includes two dozen detected
objects and more than 100 upper limits. From this work it is possible to identify classes of …

▪ 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 …

Brief, intense bursts of γ-rays occur approximately daily from random directions in space, but
their origin has remained unknown since their initial detection almost 25 years ago …

We consider the acceleration of charged particles near ultrarelativistic shocks, with Lorentz
factor. We present simulations of the acceleration process and compare these with results …

Important insight into the nature of γ-ray bursts (GRBs) has been gained in recent months
mainly due to the immediate, precise localization of the bursts,, and the discovery of …

Observations of high-redshift quasars show that the intergalactic medium (IGM) must have
been reionized at some redshift z> 5. If a source of radiation could be observed at the rest …

Cosmic γ-ray bursts have now been firmly established as one of the most powerful
phenomena in the Universe, releasing almost the rest-mass energy of a neutron star within …

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 …

We report on the results of an extensive monitoring campaign of the radio afterglow of GRB
970508, lasting 450 days after the burst. The spectral and temporal radio behavior indicate …