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- W4313018799 abstract "Gamma-ray bursts (GRBs) are short and intense bursts of ∼100 keV−1 MeV photons, usually followed by long-lasting decaying afterglow emission in a wide range of electromagnetic wavelengths from radio to X-ray and, sometimes, even to GeV gamma-rays. These emissions are believed to originate from a relativistic jet, which is driven due to the collapse of special massive stars and the mergers of compact binaries (i.e., double neutron stars or a neutron star and a black hole). This chapter first briefly introduces the basic observational facts of the GRB phenomena, including the prompt emission, afterglow emission, and host galaxies. Secondly, a general theoretical understanding of the GRB phenomena is described based on a relativistic jet’s overall dynamical evolution, including the acceleration, propagation, internal dissipation, and deceleration phases. Here a long-lasting central engine of the GRBs can substantially influence the dynamical evolution of the jet. In addition, a supernova/kilonova emission can appear in the optical afterglow of some nearby GRBs, which can provide an important probe to the nature of the GRB progenitors. Finally, as luminous cosmological phenomena, it is expected to use GRBs to probe the early universe and to constrain the cosmological parameters." @default.
- W4313018799 created "2023-01-05" @default.
- W4313018799 creator A5000568361 @default.
- W4313018799 creator A5057398157 @default.
- W4313018799 creator A5069594358 @default.
- W4313018799 creator A5089510847 @default.
- W4313018799 date "2022-01-01" @default.
- W4313018799 modified "2023-09-26" @default.
- W4313018799 title "Gamma-Ray Bursts" @default.
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