TY - JOUR
T1 - Time-dependent and Time-independent Directional Search for High-Energy Astrophysical Neutrino Point Sources in Super-Kamiokande
AU - Super-Kamiokande collaboration
AU - Wang, Xubin
AU - Abe, K.
AU - Bronner, C.
AU - Hayato, Y.
AU - Hiraide, K.
AU - Hosokawa, K.
AU - Ieki, K.
AU - Ikeda, M.
AU - Kameda, J.
AU - Kanemura, Y.
AU - Kaneshima, R.
AU - Kashiwagi, Y.
AU - Kataoka, Y.
AU - Miki, S.
AU - Mine, S.
AU - Miura, M.
AU - Moriyama, S.
AU - Nakano, Y.
AU - Nakahata, M.
AU - Nakayama, S.
AU - Noguchi, Y.
AU - Sato, K.
AU - Sekiya, H.
AU - Shiba, H.
AU - Shimizu, K.
AU - Shiozawa, M.
AU - Sonoda, Y.
AU - Suzuki, Y.
AU - Takeda, A.
AU - Takemoto, Y.
AU - Tanaka, H.
AU - Yano, T.
AU - Han, S.
AU - Kajita, T.
AU - Okumura, K.
AU - Tashiro, T.
AU - Tomiya, T.
AU - Wang, X.
AU - Yoshida, S.
AU - Fernandez, P.
AU - Labarga, L.
AU - Ospina, N.
AU - Zaldivar, B.
AU - Pointon, B. W.
AU - Kearns, E.
AU - Raaf, J. L.
AU - Wan, L.
AU - Wester, T.
AU - Bian, J.
AU - Yu, I.
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons.
PY - 2024/9/27
Y1 - 2024/9/27
N2 - This contribution reports the results of the searches for high-energy astrophysical neutrino point sources in the energy range above GeV using Super-Kamiokande data. The searches include time-integrated and time-dependent full sky searches for both νμ and νe sources and coincidence check with candidates including TXS 0506+056 and NGC 1068. The searches use unbinned maximum likelihood method, and test statistics is calculated to find signal excess over atmospheric neutrino background. The time-integrated search method is updated from a previous search by adding the neutrino energy distribution in the likelihood to consider different power-law emission spectra with varying spectral indices. This is the first time to perform the time-dependent search, which has a better performance in searching for neutrino emission in a short time period, in Super-Kamiokande. Upper limits on neutrino flux or fluence are set for all searches.
AB - This contribution reports the results of the searches for high-energy astrophysical neutrino point sources in the energy range above GeV using Super-Kamiokande data. The searches include time-integrated and time-dependent full sky searches for both νμ and νe sources and coincidence check with candidates including TXS 0506+056 and NGC 1068. The searches use unbinned maximum likelihood method, and test statistics is calculated to find signal excess over atmospheric neutrino background. The time-integrated search method is updated from a previous search by adding the neutrino energy distribution in the likelihood to consider different power-law emission spectra with varying spectral indices. This is the first time to perform the time-dependent search, which has a better performance in searching for neutrino emission in a short time period, in Super-Kamiokande. Upper limits on neutrino flux or fluence are set for all searches.
UR - https://www.scopus.com/pages/publications/85212304558
M3 - Conference article
AN - SCOPUS:85212304558
SN - 1824-8039
VL - 444
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 1079
T2 - 38th International Cosmic Ray Conference, ICRC 2023
Y2 - 26 July 2023 through 3 August 2023
ER -