Combined search of MeV ν and gravitational waves from astrophysical impulsive sources
April 24, 2019
The search of astrophysical impulsive sources emitting low-energy neutrinos and Gravitational
Waves (GWs) can be challenging for different reasons: weak signals at the source, large distance of the source,
high background inside the detectors.
A joint search in a network of GWs and $\nu$ detectors can provide several benefits: temporal coincidences
of GWs and MeV $\nu$ bursts improve sensitivity and confidence of detection and a correlation studies of the two probes
provide complementary informations on the physical mechanisms at work inside the source.
In this paper we summarise the strategy for such a combined search defined during the last years.
Moreover, we apply, for the first time in this context, a novel method that increases the probability
of identifying impulsive astrophysical bursts of low-energy neutrinos.
The proposed approach exploits the temporal structure differences between astrophysical bursts
and background fluctuations and it allows us to pinpoint weak signals otherwise unlikely to be detected.
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