TY - UNPB
T1 - Combined Pre-Supernova Alert System with Kamland and Super-Kamiokande
AU - The Super-Kamiokande Collaboration
AU - KamLAND, null
AU - Collaborations, Super-Kamiokande
AU - Abe, Seisho
AU - Eizuka, Minori
AU - Futagi, Sawako
AU - Gando, Azusa
AU - Gando, Yoshihito
AU - Goto, Shun
AU - Hachiya, Takahiko
AU - Hata, Kazumi
AU - Ichimura, Koichi
AU - Ieki, Sei
AU - Ikeda, Haruo
AU - Inoue, Kunio
AU - Ishidoshiro, Koji
AU - Kamei, Yuto
AU - Kawada, Nanami
AU - Kishimoto, Yasuhiro
AU - Koga, Masayuki
AU - Kurasawa, Maho
AU - Mitsui, Tadao
AU - Miyake, Haruhiko
AU - Morita, Daisuke
AU - Nakahata, Takeshi
AU - Nakajima, Rika
AU - Nakamura, Kengo
AU - Nakamura, Rikuo
AU - Nakamura, Ryo
AU - Nakane, Jun
AU - Ozaki, Hideyoshi
AU - Saito, Keita
AU - Sakai, Taichi
AU - Shimizu, Itaru
AU - Shirai, Junpei
AU - Shiraishi, Kensuke
AU - Shoji, Ryunosuke
AU - Suzuki, Atsuto
AU - Hill, James
AU - Martin, Daniel G. R.
AU - Bhuiyan, Nahid
AU - Burton, George T.
AU - Lodovico, Francesca Di
AU - Gao, Joanna
AU - Goldsack, Alexander
AU - Katori, Teppei
AU - Migenda, Jost
AU - Ramsden, Rory M.
AU - Xie, Zhenxiong
AU - Zsoldos, Stephane
AU - Richards, Benjamin
N1 - Resubmitted to ApJ. 22 pages, 16 figures, for more information about the combined pre-supernova alert system, see https://www.lowbg.org/presnalarm/
PY - 2024/4/15
Y1 - 2024/4/15
N2 - Preceding a core-collapse supernova, various processes produce an increasing amount of neutrinos of all flavors characterized by mounting energies from the interior of massive stars. Among them, the electron antineutrinos are potentially detectable by terrestrial neutrino experiments such as KamLAND and Super-Kamiokande via inverse beta decay interactions. Once these pre-supernova neutrinos are observed, an early warning of the upcoming core-collapse supernova can be provided. In light of this, KamLAND and Super-Kamiokande, both located in the Kamioka mine in Japan, have been monitoring pre-supernova neutrinos since 2015 and 2021, respectively. Recently, we performed a joint study between KamLAND and Super-Kamiokande on pre-supernova neutrino detection. A pre-supernova alert system combining the KamLAND detector and the Super-Kamiokande detector was developed and put into operation, which can provide a supernova alert to the astrophysics community. Fully leveraging the complementary properties of these two detectors, the combined alert is expected to resolve a pre-supernova neutrino signal from a 15 M$_{\odot}$ star within 510 pc of the Earth, at a significance level corresponding to a false alarm rate of no more than 1 per century. For a Betelgeuse-like model with optimistic parameters, it can provide early warnings up to 12 hours in advance.
AB - Preceding a core-collapse supernova, various processes produce an increasing amount of neutrinos of all flavors characterized by mounting energies from the interior of massive stars. Among them, the electron antineutrinos are potentially detectable by terrestrial neutrino experiments such as KamLAND and Super-Kamiokande via inverse beta decay interactions. Once these pre-supernova neutrinos are observed, an early warning of the upcoming core-collapse supernova can be provided. In light of this, KamLAND and Super-Kamiokande, both located in the Kamioka mine in Japan, have been monitoring pre-supernova neutrinos since 2015 and 2021, respectively. Recently, we performed a joint study between KamLAND and Super-Kamiokande on pre-supernova neutrino detection. A pre-supernova alert system combining the KamLAND detector and the Super-Kamiokande detector was developed and put into operation, which can provide a supernova alert to the astrophysics community. Fully leveraging the complementary properties of these two detectors, the combined alert is expected to resolve a pre-supernova neutrino signal from a 15 M$_{\odot}$ star within 510 pc of the Earth, at a significance level corresponding to a false alarm rate of no more than 1 per century. For a Betelgeuse-like model with optimistic parameters, it can provide early warnings up to 12 hours in advance.
KW - hep-ex
KW - astro-ph.HE
KW - physics.ins-det
M3 - Preprint
BT - Combined Pre-Supernova Alert System with Kamland and Super-Kamiokande
ER -