The last solar cycle has presented a peculiarly long quiet phase with consequent minimum modulation conditions for cosmic rays. The proton and electron spectra were measured from July 2006 to December 2009 by PAMELA experiment, providing fundamental information about the transport and modulation of cosmic rays inside the heliosphere. These studies allow to obtain a more complete description of the cosmic radiation. In this picture the time dependence of the helium spectrum become very important to constrain parameters of the actual solar modulation model. The crucial point for this analysis is the selection of a dataset of helium events which ensure high statistics with a very low contamination. In this paper the definition of the selection criteria for helium events with data taken from July 2006 to June 2014 by PAMELA experiment is reported.

Panico, B., Campana, D., Osteria, G., Barbarino, G.c., Adriani, O., Bongi, M., et al. (2017). Time dependence of the helium flux measured by pamela. In Proceedings of Science. Sissa Medialab Srl.

Time dependence of the helium flux measured by pamela

Picozza P.;Sparvoli R.;Martucci M.;
2017-01-01

Abstract

The last solar cycle has presented a peculiarly long quiet phase with consequent minimum modulation conditions for cosmic rays. The proton and electron spectra were measured from July 2006 to December 2009 by PAMELA experiment, providing fundamental information about the transport and modulation of cosmic rays inside the heliosphere. These studies allow to obtain a more complete description of the cosmic radiation. In this picture the time dependence of the helium spectrum become very important to constrain parameters of the actual solar modulation model. The crucial point for this analysis is the selection of a dataset of helium events which ensure high statistics with a very low contamination. In this paper the definition of the selection criteria for helium events with data taken from July 2006 to June 2014 by PAMELA experiment is reported.
2017 European Physical Society Conference on High Energy Physics, EPS-HEP 2017
Palazzo del Cinema and Palazzo del Casino, ita
2017
Rilevanza internazionale
2017
Settore FIS/01 - FISICA SPERIMENTALE
English
Intervento a convegno
Panico, B., Campana, D., Osteria, G., Barbarino, G.c., Adriani, O., Bongi, M., et al. (2017). Time dependence of the helium flux measured by pamela. In Proceedings of Science. Sissa Medialab Srl.
Panico, B; Campana, D; Osteria, G; Barbarino, Gc; Adriani, O; Bongi, M; Spillantini, P; Mori, N; Papini, P; Vannuccini, E; Bazilevskaya, Ga; Kvashnin,...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/250671
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