PAMELA is a satellite borne experiment designed to study with great accuracy cosmic rays of galactic, solar, and trapped nature in a wide energy range (protons: 80 MeV-700 GeV, electrons 50 MeV-400 GeV). Main objective is the study of the antimatter component: Antiprotons (80 MeV-190 GeV), positrons (50 MeV-270 GeV) and search for antinuclei with a precision of the order of 10-8). The experiment, housed on board the Russian Resurs-DK1 satellite, was launched on June, 15th 2006 in a 350×600 km orbit with an inclination of 70°. In this work we report on the recent results on proton and helium of galactic origin: data show several deviations from the pure power law spectrum. Furthermore the ratio proton/helium decreases with increasing rigidity hinting to different processes or sources undergone by the two species.
Recent PAMELA measurements of proton and helium nuclei and cosmic ray acceleration in the galaxy / Casolino, M.; Adriani, O.; Barbarino, G.C.; Bazilevskaya, G.A.; Bellotti, R.; Boezio, M.; Bogomolov, E.A.; Bongi, M.; Bonvicini, V.; Borisov, S.; Bottai, S.; Bruno, A.; Cafagna, F.; Campana, D.; Carbone, R.; Carlson, P.; Castellini, G.; Consiglio, L.; De Pascale, M.P.; De Santis, C.; De Simone, N.; Di Felice, V.; Galper, A.M.; Gillard, W.; Grishantseva, L.; Jerse, G.; Karelin, A.V.; Kheymits, M.D.; Koldashov, S.V.; Krutkov, S.Y.; Kvashnin, A.N.; Leonov, A.; Malakhov, V.; Marcelli, L.; Mayorov, A.G.; Menn, W.; Mikhailov, V.V.; Mocchiutti, E.; Monaco, A.; Mori, N.; Nikonov, N.; Osteria, G.; Palma, F.; Papini, P.; Pearce, M.; Picozza, P.; Pizzolotto, C.; Ricci, M.; Ricciarini, S.B.; Rossetto, L.; Sarkar, R.; Simon, M.; Sparvoli, R.; Spillantini, P.; Stozhkov, Y.I.; Vacchi, A.; Vannuccini, E.; Vasilyev, G.; Voronov, S.A.; Yurkin, Y.T.; Wu, J.; Zampa, G.; Zampa, N.; Zverev, V.G.. - ELETTRONICO. - 6:(2011), pp. 99-102. (Intervento presentato al convegno 32nd International Cosmic Ray Conference, ICRC 2011 tenutosi a Beijing, chn nel 2011) [10.7529/ICRC2011/V06/1218].
Recent PAMELA measurements of proton and helium nuclei and cosmic ray acceleration in the galaxy
ADRIANI, OSCAR;BONGI, MASSIMO;
2011
Abstract
PAMELA is a satellite borne experiment designed to study with great accuracy cosmic rays of galactic, solar, and trapped nature in a wide energy range (protons: 80 MeV-700 GeV, electrons 50 MeV-400 GeV). Main objective is the study of the antimatter component: Antiprotons (80 MeV-190 GeV), positrons (50 MeV-270 GeV) and search for antinuclei with a precision of the order of 10-8). The experiment, housed on board the Russian Resurs-DK1 satellite, was launched on June, 15th 2006 in a 350×600 km orbit with an inclination of 70°. In this work we report on the recent results on proton and helium of galactic origin: data show several deviations from the pure power law spectrum. Furthermore the ratio proton/helium decreases with increasing rigidity hinting to different processes or sources undergone by the two species.
I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
