Search for Supernova Neutrinos and Constraint on the Galactic Star Formation Rate with the KamLAND Data
In: The Astrophysical Journal, vol 934, iss 1, 2022
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Zugriff:
We present the results of a search for core-collapse supernova neutrinos, using long-term KamLAND data from 2002 March 9 to 2020 April 25. We focus on the electron antineutrinos emitted from supernovae in the energy range of 1.8-111 MeV. Supernovae will make a neutrino event cluster with the duration of ∼10 s in the KamLAND data. We find no neutrino clusters and give the upper limit on the supernova rate to be 0.15 yr−1 with a 90% confidence level. The detectable range, which corresponds to a >95% detection probability, is 40-59 kpc and 65-81 kpc for core-collapse supernovae and failed core-collapse supernovae, respectively. This paper proposes to convert the supernova rate obtained by the neutrino observation to the Galactic star formation rate. Assuming a modified Salpeter-type initial mass function, the upper limit on the Galactic star formation rate is <(17.5-22.7) M ⊙ yr−1 with a 90% confidence level.
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Search for Supernova Neutrinos and Constraint on the Galactic Star Formation Rate with the KamLAND Data
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Autor/in / Beteiligte Person: | Abe, S ; Asami, S ; Eizuka, M ; Futagi, 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 ; Koga, M ; Kurasawa, M ; Maemura, N ; Mitsui, T ; Miyake, H ; Nakahata, T ; Nakamura, K ; Nakamura, R ; Ozaki, H ; Sakai, T ; Sambonsugi, H ; Shimizu, I ; Shirai, J ; Shiraishi, K ; Suzuki, A ; Suzuki, Y ; Takeuchi, A ; Tamae, K ; Watanabe, H ; Yoshida, Y ; Obara, S ; Ichikawa, A ; Yoshida, S ; Umehara, S ; Fushimi, K ; Kotera, K ; Urano, Y ; Berger, BE ; Fujikawa, BK ; Learned, JG ; Maricic, J ; Axani, SN ; Winslow, LA ; Fu, Z ; Smolsky, 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 |
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Zeitschrift: | The Astrophysical Journal, vol 934, iss 1, 2022 |
Veröffentlichung: | eScholarship, University of California, 2022 |
Medientyp: | academicJournal |
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