PT Journal
AU Pierre Auger Collaboration (Abreu, Pea
   Pastor, S
TI The Pierre Auger Observatory scaler mode for the study of solar activity modulation of galactic cosmic rays
SO Journal of Instrumentation
JI J. Instrum.
PY 2011
BP P01003 - 16pp
VL 6
DI 10.1088/1748-0221/6/01/P01003
LA English
DE Cherenkov detectors; Large detector systems for particle and astroparticle physics; Particle detectors
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.
ER