Quark-Nova Explosion inside a Collapsar: Application to Gamma Ray Bursts

Figure 5

Illustrated here is the case of a QN inside a failed SN (i.e., collapsing envelope). In this case the interaction between the denser envelope material and the QN ejecta would lead to a 𝛾-ray precursor (see Section 2.1). The two possible outcomes are long and short GRBs with no SN association, depending on the angular momentum of the progenitor. Both cases result in a formation of a black hole with higher angular momentum case providing an accretion disk and a jet leading to the prompt GRB (see Section 3.2). The low angular momentum case consists of the 𝛾-ray precursor followed only by an afterglow.