3 papers · 1 filter
Synchrotron self-Compton Reverse Shock in Energy-Injection and Radiative Scenarios
Fraija Nissim, Betancourt-Kamenetskaia Boris, Galván Antonio +1
Gamma-ray bursts (GRBs) are among the most energetic extragalactic transients, providing a unique laboratory to investigate the physical origin of the diverse morphologies observed…
Deep Newtonian Afterglows: Theoretical Light Curves for Quasi-spherical Outflows
Nissim Fraija, Boris Betancourt-Kamenetskaia, Antonio Galván +1
We investigate late-time gamma-ray burst (GRB) afterglows produced by quasi-spherical outflows propagating into a stratified circumburst medium during the deep Newtonian phase. Sub…
GRB~250704B/EP250704a a Short Gamma-Ray Burst Powered by a Magnetar
Nissim Fraija, Antonio Galván, Boris Betancourt Kamenetskaia +1
GRB~250704B/EP250704a, identified as a short gamma-ray burst (sGRB), exhibited prolonged X-ray emission following the prompt phase and, in optical and infrared (IR) bands, an unusu…