Neutrino Fluence from Gamma-Ray Bursts: Off-Axis View of Structured Jets
Abstract
We investigate the expected high-energy neutrino fluence from internal shocks produced in the relativistic outflow of gamma-ray bursts. Previous model predictions have primarily focussed on on-axis observations of uniform jets. Here we present a generalization to account for arbitrary viewing angles and jet structures. Based on this formalism, we provide an improved scaling relation that expresses off-axis neutrino fluences in terms of on-axis model predictions. We also find that the neutrino fluence from structured jets can exhibit a strong angular dependence relative to that of gamma-rays and can be far more extended. We examine this behavior in detail for the recent short gamma-ray burst GRB 170817A observed in coincidence with the gravitational wave event GW170817.
Keywords
Cite
@article{arxiv.1908.06953,
title = {Neutrino Fluence from Gamma-Ray Bursts: Off-Axis View of Structured Jets},
author = {Markus Ahlers and Lea Halser},
journal= {arXiv preprint arXiv:1908.06953},
year = {2019}
}
Comments
version published in MNRAS 490, 4935-4943 (2019)