Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh11b..09l&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SH11B-09
Astronomy and Astrophysics
Astrophysics
[2162] Interplanetary Physics / Solar Cycle Variations, [7514] Solar Physics, Astrophysics, And Astronomy / Energetic Particles, [7536] Solar Physics, Astrophysics, And Astronomy / Solar Activity Cycle
Scientific paper
Using some solar activity indicators like sunspot areas and green-line coronal emissions during the period 1974-2001, we find that the quasi-biennial periodicity is a fundamental mode of solar variability. We provide evidences for the quasi-biennial modulation of the solar neutrino flux, thus supporting the hypothesis of a connection between solar neutrinos and solar magnetic fields, probably through the direct interaction with neutrino magnetic moment. The same periodic modulation has been detected when fluxes of solar energetic protons and galactic cosmic rays are investigated. This modulation results significantly correlated to the neutrino flux. Finally the superposition of the quasi-biennial cycle to the 11-yr one can explain the Gnevyshev Gap phenomenon.
Carbone Vincenzo
Laurenza Monica
Storini Marisa
Vecchio Alberto
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