TY  - JOUR
AU  - A. Ghelfi, D. Maurin
PY  - 2017//
TI  - Neutron monitors and muon detectors for solar modulation studies: 2. ϕ time series
KW  - Cosmic rays Muon detector Neutron monitor Solar modulation
N2  - The level of solar modulation at different times (related to the solar activity) is a central question of solar and galactic cosmic-ray physics. In the first paper of this series, we have established a correspondence between the uncertainties on ground-based detectors count rates and the parameter ϕ (modulation level in the force-field approximation) reconstructed from these count rates. In this second paper, we detail a procedure to obtain a reference ϕ time series from neutron monitor data. We show that we can have an unbiased and accurate ϕ reconstruction (Δϕ/ϕ≃10%). We also discuss the potential of Bonner spheres spectrometers and muon detectors to provide ϕ time series. Two by-products of this calculation are updated ϕ values for the cosmic-ray database and a web interface to retrieve and plot ϕ from the 50’s to today (http://lpsc.in2p3.fr/crdb).
SN  - 0273-1177
SN  - 0273-1177
UR  - http://dx.doi.org/10.1016/j.asr.2016.06.027
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=7036), last updated on Mon, 01 Jul 2024 17:10:24 +0200
ID  - A.Ghelfi2017
ER  -