http://arxiv.org/abs/1710.06102
Short duration Gamma Ray Bursts and their afterglows are believed to be one of the most promising electro-magnetic (EM) counterparts of Neutron Star (NS) mergers. The afterglow emission is broadband, visible across the entire electro-magnetic window from {\gamma}-ray to radio frequencies. The flux evolution in these frequencies is sensitive to the multi-dimensional afterglow physical parameter space. In future if the association of GRBs with NS mergers is confirmed through gravitational wave (GW) and EM observations, such joint observations can provide valuable constraints on afterglow physics. We run simulations of GW-detected BNS events and assuming all of them are associated with a GRB jet which also produces an afterglow, investigate how detections or non-detections in X-ray, optical and radio frequencies can be influenced by the parameter space. We narrow-down the regions of afterglow parameter space for a uniform top-hat jet model which would result in different detection scenarios. We list inferences which can be drawn on the physics of GRB afterglows from multi-messenger astronomy with coincident GW-EM observations.
M. Saleem, L. Resmi, K. Misra, et. al.
Wed, 18 Oct 2017
1/62
Comments: Submitted to MNRAS on 08 October 2017