Since data-taking began in January 2004, the Pierre Auger Observatory has been recording the count rates of low energy secondary cosmic ray particles for the self-calibration of the ground detectors of its surface detector array. After correcting for atmospheric effects, modulations of galactic cosmic rays due to solar activity and transient events are observed. Temporal variations related with the activity of the heliosphere can be determined with high accuracy due to the high total count rates. In this study, the available data are presented together with an analysis focused on the observation of Forbush decreases, where a strong correlation with neutron monitor data is found.

J. Abraham, P. Abreu, M. Aglietta, C. Aguirre, E. J.Ahn, D. Allard, et al. (2011). The Pierre Auger Observatory Scaler Mode for the Study of the Modulation of Galactic Cosmic Rays due to Solar Activity. JOURNAL OF INSTRUMENTATION, 6, 1-15.

The Pierre Auger Observatory Scaler Mode for the Study of the Modulation of Galactic Cosmic Rays due to Solar Activity

G. Marsella;
2011-01-12

Abstract

Since data-taking began in January 2004, the Pierre Auger Observatory has been recording the count rates of low energy secondary cosmic ray particles for the self-calibration of the ground detectors of its surface detector array. After correcting for atmospheric effects, modulations of galactic cosmic rays due to solar activity and transient events are observed. Temporal variations related with the activity of the heliosphere can be determined with high accuracy due to the high total count rates. In this study, the available data are presented together with an analysis focused on the observation of Forbush decreases, where a strong correlation with neutron monitor data is found.
12-gen-2011
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
J. Abraham, P. Abreu, M. Aglietta, C. Aguirre, E. J.Ahn, D. Allard, et al. (2011). The Pierre Auger Observatory Scaler Mode for the Study of the Modulation of Galactic Cosmic Rays due to Solar Activity. JOURNAL OF INSTRUMENTATION, 6, 1-15.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/667967
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