The "fireshell" model and the "canonical" GRB scenario

TL;DR

The paper introduces the fireshell model's canonical GRB light curve, distinguishing between the initial P-GRB emission and the subsequent afterglow caused by interaction with the circumstellar medium, based on black hole formation.

Contribution

It presents a new framework for understanding GRB light curves with a clear two-component structure and differentiates genuine from fake short GRBs within this model.

Findings

Defined the canonical GRB light curve with two components

Explained the origin of P-GRB and afterglow emissions

Provided criteria to distinguish genuine and fake short GRBs

Abstract

In the "fireshell" model we define a "canonical GRB" light curve with two sharply different components: the Proper-GRB (P-GRB), emitted when the optically thick fireshell of electron-positron plasma originating the phenomenon reaches transparency, and the afterglow, emitted due to the collision between the remaining optically thin fireshell and the CircumBurst Medium (CBM). We outline our "canonical GRB" scenario, originating from the gravitational collapse to a black hole, with a special emphasis on the discrimination between "genuine" and "fake" short GRBs.