Solar cycle modulation of cosmic rays observed with the low energy modes of the pierre auger observatory
The low energy modes of the surface detector array of the Pierre Auger Observatory record variations in the flux of low energy secondary particles with extreme detail. These two modes consist of recording (1) the rate of signals for energies between 15 MeV and 100 MeV (the Scaler mode) and (2) the c...
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2015
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18248039_v30-July-2015_n_p_MasiasMeza http://hdl.handle.net/20.500.12110/paper_18248039_v30-July-2015_n_p_MasiasMeza |
| Aporte de: |
| Sumario: | The low energy modes of the surface detector array of the Pierre Auger Observatory record variations in the flux of low energy secondary particles with extreme detail. These two modes consist of recording (1) the rate of signals for energies between 15 MeV and 100 MeV (the Scaler mode) and (2) the calibration charge histograms of the individual pulses detected by each water- Cherenkov station, covering different energy channels up to 1 GeV (the Histogram mode). Previous work has studied the flux of galactic cosmic rays on short and intermediate time scales (i.e. from minutes to weeks) using these low energy modes. In this work, after including a longterm correction to the response of the detectors, we present the first long-term analysis of the flux of cosmic rays using scalers and two energy bands of the calibration histograms. We show its sensitivity to the solar cycle variation and its relation to the solar modulation of cosmic rays for an 8-year period. |
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