학술논문
A Search for Correlated Low-energy Electron Antineutrinos in KamLAND with Gamma-Ray Bursts
Document Type
article
Author
Abe, S; Asami, S; Gando, A; Gando, Y; Gima, T; Goto, A; Hachiya, T; Hata, K; Hosokawa, K; Ichimura, K; Ieki, S; Ikeda, H; Inoue, K; Ishidoshiro, K; Kamei, Y; Kawada, N; Kishimoto, Y; Kinoshita, T; Koga, M; Maemura, N; Mitsui, T; Miyake, H; Nakamura, K; Nakamura, R; Ozaki, H; Sakai, T; Sambonsugi, H; Shimizu, I; Shirai, J; Shiraishi, K; Suzuki, A; Suzuki, Y; Takeuchi, A; Tamae, K; Eizuka, M; Kurasawa, M; Nakahata, T; Futagi, S; Watanabe, H; Yoshida, Y; Obara, S; Ichikawa, AK; Yoshida, S; Umehara, S; Fushimi, K; Berger, BE; Fujikawa, BK; Learned, JG; Maricic, J; Axani, SN; Smolsky, J; Laber-Smith, C; Winslow, LA; Fu, Z; Ouellet, J; Efremenko, Y; Karwowski, HJ; Markoff, DM; Tornow, W; Li, A; Detwiler, JA; Enomoto, S; Decowski, MP; Grant, C; Song, H; O’Donnell, T; Dell’Oro, S
Source
The Astrophysical Journal. 927(1)
Subject
Language
Abstract
We present the results of a time-coincident event search for low-energy electron antineutrinos in the KamLAND detector with gamma-ray bursts (GRBs) from the Gamma-ray Coordinates Network and Fermi Gamma-ray Burst Monitor. Using a variable coincidence time window of ±500 s plus the duration of each GRB, no statistically significant excess above the background is observed. We place the world's most stringent 90% confidence level upper limit on the electron antineutrino fluence below 17.5 MeV. Assuming a Fermi-Dirac neutrino energy spectrum from the GRB source, we use the available redshift data to constrain the electron antineutrino luminosity and effective temperature.