Publications [#248725] of Christopher Walter

Papers Published
  1. 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; Benedictis, LD; Cataldo, GD; Dekhissi, H; Marzo, CD; Mitri, ID; Vincenzi, MD; Credico, AD; Erriquez, O; Fantini, R; Favuzzi, C; Forti, C; Fusco, P et al., Performance of the MACRO detector at Gran Sasso: Moon shadow and seasonal variations, Nuclear Physics B Proceedings Supplements, vol. 61 no. 3 SUPPL. (1998), pp. 180-184 .

    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.