5,141 research outputs found
Trans-Ejecta High-Energy Neutrino Emission from Binary Neutron Star Mergers
The observations of a macronova/kilonova accompanied by gravitational waves
from a binary neutron star merger (GW170817) confirmed that neutron star
coalescences produce copious ejecta. The coincident gamma-ray detection implies
the existence of a relativistic jet in this system. During the jet's
propagation within the ejecta, high-energy photons and neutrinos can be
produced. The photons are absorbed by the ejecta, while the neutrinos escape
and can be detected. Here, we estimate such trans-ejecta neutrino emission, and
discuss how neutrino observations could be used to differentiate between
gamma-ray burst emission scenarios. We find that neutrinos from the internal
shocks inside the ejecta may be detectable by IceCube within a few years of
operation, and will likely be detected with IceCube-Gen2. The neutrino signals
coincident with gravitational waves would enable us to reveal the physical
quantities of the choked jets even without electromagnetic signals.Comment: 12 pages, 5 figures, 2 tables, accepted for publication in PR
- …