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Gamma-Ray Bursts and Neutron Star Mergers - Possibly the Strongest Explosions in the Universe
Tsvi Piran
-ray bursts have baffled theorists ever since their accidental discovery at the sixties. We suggest that these bursts originate in merger of neutron star binaries, taking place…
Fireballs in the Galactic Halo and -Ray Bursts
Tsvi Piran, Amotz Shemi
If gamma ray burst sources are in the galactic halo they inevitably involve a creation of an opaque pair plasma fireball, just like in cosmological sources. We find that the typica…
The Loss of Unitarity in the Vicinity of a Time Machine
Dalia S. Goldwirth, Malcolm J. Perry, Tsvi Piran
We construct the propagator of a non-relativistic non-interacting particle in a flat spacetime in which two regions have been identified. This corresponds to the simplest "time mac…
Gamma-Ray Bursts as the Death Throes of Massive Binary Stars
Ramesh Narayan, Bohdan Paczyński, Tsvi Piran
It is proposed that gamma-ray bursts are created in the mergers of double neutron star binaries and black hole neutron star binaries at cosmological distances. Bursts with complex…