Speaker
Description
Search for low-energy Borexino's signals from fast radio bursts.
A.V. Derbin for the Borexino collaboration
The search for neutrino events in correlation with 42 most intense fast radio bursts (FRBs) has been performed using the Borexino data. We have searched for signals with visible energies above 250 keV within a time window of ±1000 s corresponding to the detection time of a particular FRB. We also applied an alternative approach based on searching for specific shapes of neutrino-electron scattering spectra in the full exposure spectrum of the Borexino detector. In particular, two incoming neutrino spectra were considered: the monoenergetic line and the spectrum expected from supernovae. The same spectra were considered for electron antineutrinos detected through the inverse beta-decay reaction. No statistically significant excess over the background was observed. As a result, the strongest upper limits on FRB-associated neutrino fluences of all flavors have been obtained in the 0.5 − 50 MeV neutrino energy range.
| Collaboration | Borexino collaboration |
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