Determining the Lorentz factor and viewing angle of GRB 170817A
The Astrophysical Journal Letters, 2017•iopscience.iop.org
… Furthermore, this GRB was too weak to be detected from a far distance; therefore, it is
reasonable to assume that far distant GRBs were observed on-axis. Here, we introduce a
method of determining the bulk Lorentz factor and viewing angle by using relations between
the peak energy and the isotropic equivalent energy ( ${E}_{{\rm{p}},{\rm{i}}}\mbox{--}{E}_{\mathrm{iso}}$ …
We thus discuss our method and derive its results for GRB 170817A in Section 3. A detailed
discussion of these results and our conclusions are presented in Section 4. …
reasonable to assume that far distant GRBs were observed on-axis. Here, we introduce a
method of determining the bulk Lorentz factor and viewing angle by using relations between
the peak energy and the isotropic equivalent energy ( ${E}_{{\rm{p}},{\rm{i}}}\mbox{--}{E}_{\mathrm{iso}}$ …
We thus discuss our method and derive its results for GRB 170817A in Section 3. A detailed
discussion of these results and our conclusions are presented in Section 4. …
Abstract
The weak short gamma-ray burst (GRB) 170817A was accompanied by the GW170817 gravitational-wave event and is believed to have been produced by an off-beam relativistic jet. Here, we use the
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