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  • A Search for Correlated Low...
    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, A. K.; Yoshida, S.; Umehara, S.; Fushimi, K.; Berger, B. E.; Fujikawa, B. K.; Learned, J. G.; Maricic, J.; Axani, S. N.; Smolsky, J.; Laber-Smith, C.; Winslow, L. A.; Fu, Z.; Ouellet, J.; Efremenko, Y.; Karwowski, H. J.; Markoff, D. M.; Tornow, W.; Li, A.; Detwiler, J. A.; Enomoto, S.; Decowski, M. P.; Grant, C.; Song, H.; O’Donnell, T.; Dell’Oro, S.

    Astrophysical journal/˜The œAstrophysical journal, 03/2022, Letnik: 927, Številka: 1
    Journal Article

    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.