The PAMELA experiment has been under way aboard the Resurs DK-1 satellite since June 2006. The results have revealed an increase in the ratio of the positron intensity to the total electron and positron intensity at energies in excess of 10 GeV. This increase suggests an additional source of cosmic rays that is associated with either some astrophysical objects (e.g., pulsars) or the probable annihilation of particles of dark matter. Local positron sources can produce notable anisotropy in their flux. The results from the search for anisotropy of positrons and electrons in the events detected by the PAMELA experiment in the 2006–2013 timeframe are described in detail in this work.
Searching for anisotropy of positrons and electrons in the PAMELA experiment / Mikhailov, V.V; Adriani, O.; Barbarino, G.C.; Bazilevskaya, G.A.; Bellotti, R.; Boezio, M.; Bogomolov, E.A.; Bonechi, L.; Bongi, M.; Bonvicini, V.; Bottai, S.; Bruno, A.; Vacchi, A.; Vannuccini, E.; Vasilyev, G.I.; Voronov, S.A.; Galper, A.M.; De Donato, C.; De Santis, C.; De Simone, N.; Di Felice, V.; Zverev, V.G.; Zampa, G.; Zampa, N.; Cafagna, F.; Campana, D.; Carbone, R.; Karelin, A.V.; Carlson, P.; Casolino, M.; Castellini, G.; Kvashnin, A.N.; Koldashov, S.V.; Koldobskiy, S.A.; Krutkov, S. Yu.; Leonov, A.A.; Malvezzi, V.; Marcelli, L.; Martucci, M.; Mayorov, A.G.; Malakhov, V.; Menn, W.; Merge, M.; Mocchiutti, E.; Monaco, A.; Mori, N.; Munini, R.; Osteria, G.; Palma, F.; Panico, B.; Papini, P.; Pearce, M.; Picozza, P.; Ricci, M.; Ricciarini, S.B.; Simon, M.; Sarkar, R.; Sparvoli, R.; Spillantini, P.; Stozhkov, Yu. I.; Yurkin, Yu. T.. - In: BULLETIN OF THE RUSSIAN ACADEMY OF SCIENCES. PHYSICS. - ISSN 1062-8738. - ELETTRONICO. - 79:(2015), pp. 298-301. [10.3103/S1062873815030375]
Searching for anisotropy of positrons and electrons in the PAMELA experiment
ADRIANI, OSCAR;BONGI, MASSIMO;MORI, NICOLA;
2015
Abstract
The PAMELA experiment has been under way aboard the Resurs DK-1 satellite since June 2006. The results have revealed an increase in the ratio of the positron intensity to the total electron and positron intensity at energies in excess of 10 GeV. This increase suggests an additional source of cosmic rays that is associated with either some astrophysical objects (e.g., pulsars) or the probable annihilation of particles of dark matter. Local positron sources can produce notable anisotropy in their flux. The results from the search for anisotropy of positrons and electrons in the events detected by the PAMELA experiment in the 2006–2013 timeframe are described in detail in this work.
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