Performance of the MACRO detector at Gran Sasso: Moon shadow and seasonal variations

Published

Journal Article

The MACRO underground detector at Gran Sasso has recorded about 30 million muon events in the period 1989-1995. We have analyzed these data to look for time variations and to study the pointing capabilities of the apparatus in the search for astrophysical point sources. We have observed a 3% seasonal variation of the high energy muon rate, due to atmospheric temperature variations, in agreement with theoretical predictions. We report also the detection of the moon shadowing effect with a statistical significance of 3.7 σ. The results obtained straighten the possibility that a "muon astronomy" using underground experiments is possible.

Full Text

Duke Authors

Cited Authors

  • Giglietto, N; Ambrosio, M; Antolini, R; Auriemma, G; Baker, R; Baldini, A; Barbarino, GC; Barish, BC; Battistoni, G; Bellotti, R; Bemporad, C; Bernardini, P; Bilokon, H; Bisi, V; Bloise, C; Bosio, T; Bower, C; Bussino, S; Cafagna, F; Calicchio, M; Campana, D; Carboni, M; Castellano, M; Cecchini, S; Cei, F; Chiarella, V; Corona, A; Coutu, S; de Benedictis, L; de Cataldo, G; Dekhissi, H; de Marzo, C; de Mitri, I; de Vincenzi, M; di Credico, A; Erriquez, O; Fantini, R; Favuzzi, C; Forti, C; Fusco, P; Giacomelli, G; Giannini, G; Goretti, M; Grassi, M; Green, P; Grillo, A; Guarino, F; Guarnaccia, P; Gustavino, C; Habig, A; Hanson, K; Hawthorne, A; Heinz, R; Hong, JT; Iarocci, E; Katsavounidis, E; Kearns, E; Kyriazopoulou, S; Lamanna, E; Lane, C; Levin, DS; Lipari, P; Liu, G; Liu, R; Longley, NP; Longo, MJ; Ludlam, G; Maaroufi, F; Mancarella, G; Mandrioli, G; Margiotta-Neri, A; Marini, A; Martello, D; Marzari-Chiesa, A; Mazziotta, MN; Michael, DG; Mikheyev, S; Miller, L; Monacelli, P; Montaruli, T; Monteno, M; Mufson, S; Musser, J; Nicoló, D; Nolty, R; Okada, C; Orth, C; Osteria, G; Palamara, O; Parlati, S; Patera, V; Patrizii, L; Pazzi, R; Peck, CW; Petrera, S; Pignatano, ND; Pistilli, P; Popa, V; Rainó, A; Reynoldson, J

Published Date

  • January 1, 1998

Published In

Volume / Issue

  • 61 / 3 SUPPL.

Start / End Page

  • 180 - 184

International Standard Serial Number (ISSN)

  • 0920-5632

Digital Object Identifier (DOI)

  • 10.1016/S0920-5632(97)00559-8

Citation Source

  • Scopus