Search for neutrinos from Gamma-Ray Bursts with the Baikal neutrino telescope NT200

TL;DR

This study used the Baikal NT200 neutrino telescope to search for neutrinos from gamma-ray bursts but found no correlated events, setting upper limits on neutrino fluxes and extending energy range constraints.

Contribution

First to analyze neutrino data from NT200 for GRB correlations, establishing new upper limits and extending energy range beyond previous detectors.

Findings

No neutrino events correlated with GRBs were observed.

Set a neutrino flux upper limit of $E^2 \\Phi < 1.1 \\times 10^{-6}cm^{-2}s^{-1}sr^{-1}GeV$.

Extended the energy range of neutrino flux limits beyond Super-Kamiokande.

Abstract

We present an analysis of neutrinos detected with the Baikal neutrino telescope NT200 for correlations with gamma-ray bursts (GRB). No neutrino events correlated with GRB were observed. Assuming a Waxman-Bahcall spectrum, a neutrino flux upper limit of {\bf $E^2 \Phi < 1.1 \times 10^{-6}cm^{-2}s^{-1}sr^{-1}GeV$} was obtained. We also present the Green's Function fluence limit for this search, which extends two orders of magnitude beyond the energy range of the Super-Kamiokande limit.