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 focused 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 behaviour in detail for the recent short gamma-ray burst GRB 170817A observed in coincidence with the gravitational wave event GW170817.
| Original language | English |
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| Journal | Monthly Notice of the Royal Astronomical Society |
| Volume | 490 |
| Issue number | 4 |
| Pages (from-to) | 4935-4943 |
| ISSN | 0035-8711 |
| DOIs | |
| Publication status | Published - 1 Dec 2019 |