High-entropy fireballs and jets in gamma-ray burst sources

Astronomy and Astrophysics – Astrophysics

Scientific paper

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118

Binary Stars, Entropy, Gamma Ray Bursts, Neutron Stars, Nuclear Astrophysics, Radio Jets (Astronomy), Black Holes (Astronomy), Heating, Neutrinos, Stellar Interiors, Stellar Mass Ejection, Stellar Models

Scientific paper

Two mechanisms whereby compact coalescing binaries can produce relatively 'clean' fireballs via neutrino-antineutrino annihilation are proposed. Preejected mass due to tidal heating will collimate the fireball into jets. The resulting anisotropic gamma-ray emission can be efficient and intense enough to provide an acceptable model for gamma-ray bursts, if these originate at cosmological distances.

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