KamLAND SENSITIVITY TO NEUTRINOS FROM PRE-SUPERNOVA STARS

Published

Journal Article

© 2016. The American Astronomical Society. All rights reserved. In the late stages of nuclear burning for massive stars (M > 8 Mȯ), the production of neutrino-antineutrino pairs through various processes becomes the dominant stellar cooling mechanism. As the star evolves, the energy of these neutrinos increases and in the days preceding the supernova a significant fraction of emitted electron anti-neutrinos exceeds the energy threshold for inverse beta decay on free hydrogen. This is the golden channel for liquid scintillator detectors because the coincidence signature allows for significant reductions in background signals. We find that the kiloton-scale liquid scintillator detector KamLAND can detect these pre-supernova neutrinos from a star with a mass of 25 Mȯ at a distance less than 690 pc with 3σ significance before the supernova. This limit is dependent on the neutrino mass ordering and background levels. KamLAND takes data continuously and can provide a supernova alert to the community.

Full Text

Duke Authors

Cited Authors

  • The KamLAND Collaboration, ; Asakura, K; Gando, A; Gando, Y; Hachiya, T; Hayashida, S; Ikeda, H; Inoue, K; Ishidoshiro, K; Ishikawa, T; Ishio, S; Koga, M; Matsuda, S; Mitsui, T; Motoki, D; Nakamura, K; Obara, S; Oura, T; Shimizu, I; Shirahata, Y; Shirai, J; Suzuki, A; Tachibana, H; Tamae, K; Ueshima, K; Watanabe, H; Xu, BD; Kozlov, A; Takemoto, Y; Yoshida, S; Fushimi, K; Piepke, A; Banks, TI; Berger, BE; Fujikawa, BK; O'Donnell, T; Learned, JG; Maricic, J; Matsuno, S; Sakai, M; Winslow, LA; Efremenko, Y; Karwowski, HJ; Markoff, DM; Tornow, W; Detwiler, JA; Enomoto, S; Decowski, MP

Published Date

  • February 10, 2016

Published In

Volume / Issue

  • 818 / 1

Electronic International Standard Serial Number (EISSN)

  • 1538-4357

International Standard Serial Number (ISSN)

  • 0004-637X

Digital Object Identifier (DOI)

  • 10.3847/0004-637X/818/1/91

Citation Source

  • Scopus