Radiative Regimes in Gamma‐Ray Bursts and Afterglows | Zendy

A. Panaitescu | Zendy; P. Mészáros | Zendy

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Radiative Regimes in Gamma‐Ray Bursts and Afterglows

Author(s) -

A. Panaitescu,

P. Mészáros

Publication year - 1998

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/305856

Subject(s) - gamma ray burst , afterglow , physics , ejecta , astrophysics , radiative transfer , electron , coupling (piping) , magnetic field , nuclear physics , supernova , optics , quantum mechanics , mechanical engineering , engineering

We present numerical simulations of Gamma-Ray Bursts arising from externalshocks in the impulsive and wind models, including a weak or a strong couplingbetween electrons and protons plus magnetic fields, and analyze the burstfeatures in each scenario. The dynamics of the ejecta and external medium arefollowed into the late stages of deceleration, in order to study thehydrodynamics of the remnant and the temporal and spectral evolution of theafterglow. A brief comparison with the optical and radio afterglows of GRB970228 and GRB 970508 is made.Comment: Latex, 11 pages, 5 figures, accepted by ApJ, revised version, minor change

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