Spectral Lines in the Afterglow of Gamma Ray Bursts

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Gamma-Ray Sources, Gamma-Ray Bursts, Active And Peculiar Galaxies And Related Systems

Scientific paper

We give a brief description of the observed spectral lines in the afterglow of gamma ray bursts (GRB). The nature of the GRB afterglow is based on the fast moving matter emitting the electro-magnetic radiation and its interaction with surrounding matter. As the result of the interaction, absorption and emission lines could be produced. This scenario happens in the area surrounding the burst, and it is of great interest to study the material in this area. Here we use a method based on the curve of growth analysis to study abundances of heavy elements and physical properties in the surroundings of the Gamma ray bursts.

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