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Mass ejection in neutron star mergers
S. Rosswog, M. Liebendoerfer, F. -K. Thielemann +3
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…
Gamma-Ray Bursts and the Fireball Model
Tsvi Piran
Gamma-ray bursts (GRBs) have puzzled astronomers since their accidental discovery in the late sixties. The BATSE detector on the COMPTON-GRO satellite has been detecting one burst…
Radiative Efficiencies of Continuously Powered Blast Waves
Ehud Cohen, Tsvi Piran
We use general arguments to show that a continuously powered radiative blast wave can behave self similarly if the energy injection and radiation mechanisms are self similar. In th…
Synchrotron Self Absorption in GRB Afterglow
Jonathan Granot, Tsvi Piran, Re'em Sari
GRB afterglow is reasonably described by synchrotron emission from relativistic blast waves at cosmological distances. We perform detailed calculations taking into account the effe…
Gamma-Ray Bursts - The Second Revolution
Tsvi Piran
Gamma-ray bursts GRBs are among the most mysterious astronomical phenomenon ever discovered. Unlike most astronomical discoveries which were explained within weeks or months after…
Images and Spectra From the Interior of a Relativistic Fireball
Jonathan Granot, Tsvi Piran, Re'em Sari
The detection of an afterglow, following a gamma-ray burst (GRB), can be described reasonably well by synchrotron emission from a relativistic spherical expanding blast wave, drive…