PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Cosmic-Ray Direct. CRD- direct measurements
Time dependence of the proton and helium flux measured by PAMELA
B. Panico,* G. Osteria, D. Campana, G. Barbarino, O. Adriani, M. Bongi, P. Spillantini, N. Mori, P. Papini, E. Vannuccini, G. Bazilevskaya, A. Kvashnin, Y. Stozhkov, R. Bellotti, A. Monaco, A. Bruno, F. Cafagna, M. Boezio, V. Bonvicini, E. Mocchiutti, R. Munini, N. Zampa, G. Zampa, A. Vacchi, E. Bogomolov, S. Krutkov, S. Vasilyev, P. Carlson, M. Pearce, M. Casolino, S. Castellini, C. De Santis, R. Sparvoli, L. Marcelli, M. Mergé, P. Picozza, V. Di Felice, A. Galper, A. Karelin, S. Koldashov, S. Koldobskiy, Y.T. Yurkin, V. Malakhov, A. Leonov, A.G. Mayorov, V. Mikhailov, S. Voronov, M. Martucci, W. Menn, M. Simon, M. Ricci, S.B. Ricciarini
*corresponding author
Full text: pdf
Pre-published on: August 16, 2017
Published on: August 03, 2018
Abstract
The energy spectra of galactic cosmic rays carry fundamental information regarding their origin and propagation, but, near Earth,
cosmic rays are significantly affected by the solar magnetic field which changes over time. The time dependence of proton and electron spectra were measured from July 2006 to December 2009 by PAMELA experiment, that is a ballooon-borne experiment collecting data since 15 June 2006.
These studies allowed to obtain a more complete description of the cosmic radiation, providing fundamental information about the transport and modulation of cosmic rays inside the heliosphere. In this talk the study of the time dependence of the cosmic-ray protons and helium nuclei from the unusual 23rd solar minimum through the following period of solar maximum activity is presented.
DOI: https://doi.org/10.22323/1.301.0173
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