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1998•Monthly Notices of the Royal Astronomical SocietyOpen access

A mini-supernova model for optical afterglows of gamma-ray bursts

С. И. Блинников, К. А. Постнов

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Abstract

An energy deposition of ∽1050 erg into the exterior 10−3 M⊙ layers of a red giant is calculated to produce an optical phenomenon similar to afterglows of gamma-ray bursts (GRB) recently observed. This mechanism can be realized if a GRB is generated by some mechanism in a close binary system. In contrast to a ‘hypernova’ scenario for GRB recently proposed by Paczyński, this model does not require huge kinetic energy in the expanding shell to explain optical afterglows of GRB.

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An energy deposition of ∽1050 erg into the exterior 10−3 M⊙ layers of a red giant is calculated to produce an optical phenomenon similar to afterglows of gamma-ray bursts (GRB) recently observed. This mechanism can be realized if a GRB is generated by some mechanism in a close binary system. In contrast to a ‘hypernova’ scenario for GRB recently proposed by Paczyński, this model does not require huge kinetic energy in the expanding shell to explain optical afterglows of GRB.

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Available abstract

An energy deposition of ∽1050 erg into the exterior 10−3 M⊙ layers of a red giant is calculated to produce an optical phenomenon similar to afterglows of gamma-ray bursts (GRB) recently observed. This mechanism can be realized if a GRB is generated by some mechanism in a close binary system. In contrast to a ‘hypernova’ scenario for GRB recently proposed by Paczyński, this model does not require huge kinetic energy in the expanding shell to explain optical afterglows of GRB.

Key concepts: Gamma-ray burst, Physics, Hypernova, Astrophysics, Supernova, Afterglow, Kinetic energy, Astronomy

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