Supernova neutrino burst search at KamLAND

1 Sep 2021, 18:00
1h 30m
Poster Neutrino physics and astrophysics Poster session 2

Speaker

Minori Eizuka (RCNS, Tohoku Univ.)

Description

The observation of neutrinos from SN1987A had improved our understanding of
the mechanism of the supernova explosion and neutrino properties. Now, several state-of-the-art neutrino detectors are running. There is a chance to reveal the explosion mechanism and neutrino properties in more details. In this study, we search for neutrino events from supernovae with KamLAND, which is a 1kt liquid scintillator detector, via inverse-beta decay reaction. KamLAND can measure low energy events ($E_{\nu}>1.8$MeV) with low background conditions from delayed-coincidence scheme and have long-term stable data from 2002, including an unexplored dataset by other neutrino detectors (Dec. 2013 ~ Jul. 2020). Selection criteria for supernova events are two or more inverse beta decays within 10 s. We present the search results and upper limits on supernova rate in our galaxy.

Primary author

Minori Eizuka (RCNS, Tohoku Univ.)

Presentation Materials

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