AbstractThe 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 ( Δ ϕ / 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).


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    Title :

    Neutron monitors and muon detectors for solar modulation studies: 2. ϕ time series


    Contributors:
    Ghelfi, A. (author) / Maurin, D. (author) / Cheminet, A. (author) / Derome, L. (author) / Hubert, G. (author) / Melot, F. (author)

    Published in:

    Advances in Space Research ; 60 , 4 ; 833-847


    Publication date :

    2016-06-19


    Size :

    15 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English