2 papers
astro-ph.HE2025
Photospheric emission from GRB 211211A altered by a strong radiation-mediated shock
Oscar Wistemar, Filip Alamaa, Felix Ryde
Gamma-ray burst (GRB) spectra are typically non-thermal, with many including two spectral breaks suggestive of optically-thin emission. However, the emitted spectrum from a GRB pho…
astro-ph.HE2025
A generalized method to measure the Lorentz factor from gamma-ray burst photospheric emission
Oscar Wistemar, Felix Ryde, Filip Alamaa
The properties of gamma-ray bursts (GRBs) that are inferred from observations depend on the value of the bulk Lorentz factor, . Consequently, accurately estimating it is an imp…