Study of electron anti-neutrinos associated with gamma-ray bursts using KamLAND

TL;DR

This study used KamLAND data from 2002 to 2013 to search for electron anti-neutrinos from gamma-ray bursts, setting new upper limits on their fluence and constraining their luminosity-temperature relation.

Contribution

It provides the first constraints on the relation between anti-neutrino luminosity and temperature from GRBs and sets the tightest upper limits on anti-neutrino fluence below 7 MeV.

Findings

No significant anti-neutrino excess detected.

Established the tightest upper limits on anti-neutrino fluence below 7 MeV.

First constraints on anti-neutrino luminosity-temperature relation from GRBs.

Abstract

We search for electron anti-neutrinos ($\overline{\nu}_e$) from long and short-duration gamma-ray bursts~(GRBs) using data taken by the KamLAND detector from August 2002 to June 2013. No statistically significant excess over the background level is found. We place the tightest upper limits on $\overline{\nu}_e$ fluence from GRBs below 7 MeV and place first constraints on the relation between $\overline{\nu}_e$ luminosity and effective temperature.