The pierre auger observatory scaler mode for the study of solar activity modulation of galactic cosmic rays

The Pierre Auger Collaboration, G. Farrar

Research output: Contribution to journalArticle

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.

Original languageEnglish (US)
Article numberP01003
JournalJournal of Instrumentation
Volume6
Issue number1
DOIs
StatePublished - 2011

Fingerprint

scalers
Cosmic rays
Cosmic Rays
Observatories
solar activity
Observatory
observatories
Modulation
secondary cosmic rays
Forbush decreases
Detectors
modulation
atmospheric effects
heliosphere
detectors
Count
Detector
Atmospheric Effects
Self-calibration
monitors

Keywords

  • Cherenkov detectors
  • Large detector systems for particle and astroparticle physics
  • Particle detectors

ASJC Scopus subject areas

  • Instrumentation
  • Mathematical Physics

Cite this

The pierre auger observatory scaler mode for the study of solar activity modulation of galactic cosmic rays. / The Pierre Auger Collaboration; Farrar, G.

In: Journal of Instrumentation, Vol. 6, No. 1, P01003, 2011.

Research output: Contribution to journalArticle

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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.",
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AU - Allard, D.

AU - Allekotte, I.

AU - Allen, J.

AU - Alvarez Castillo, J.

AU - Alvarez-Muñiz, J.

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AU - Badagnani, D.

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AU - Bardenet, R.

AU - Barroso, S. L C

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AU - Beatty, J. J.

AU - Becker, B. R.

AU - Becker, K. H.

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AU - Billoir, P.

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AU - Blanco, M.

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AB - 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.

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KW - Particle detectors

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