GRB variabilities and following gravitational waves induced by gravitational instability in NDAFs

ABSTRACT The present work proposes a new formalism for the inner regions of neutrino-dominated accretion flows (NDAFs) by considering self-gravity, where neutrino opacity is high enough to make neutrinos trapped becoming dominant factor in transportation energy and angular momentum over magneto rotational instability. We investigate possibility gravitational instability fragmentation model highly variable structure prompt emission gamma-ray bursts (GRBs). results lead us introduce instability, these regions, as source viscosity that same functional form β-prescription viscosity. Such consideration brings about unstable disc. In addition, we find consequent clumpy this area capable account temporal variability GRB’s light curve, especially lower choices parameter β, ∼10−5. Finally, predict formation waves through migration fragments before being tidally disrupted. These appear be detectable via range current future detectors from LIGO Cosmic Explorer.