Other
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cosre..47..378z&link_type=abstract
Cosmic Research, Volume 47, Issue 5, pp.378-383
Other
Scientific paper
Low fluxes of protons with energies 0.3-10 MeV were studied during 21-23 solar cycles as a function of the MgII index using the data of the instruments CPME, EIS ( IMP8), and EPHIN ( SOHO). It has been shown that a) during quiet time of solar activity the fluxes of protons (background protons) have a positive correlation with the MgII index value throughout the solar cycle, b) specific features of variations of the MgII index during the solar minima of 1986-1987 and 1996-1997 can be considered, as well as variations of background fluxes of low energy charged particles, to be manifestations of the 22-year magnetic cycle of the Sun, and c) periods of the lowest value of the MgII index are also characterized by the smaller values of the ratio of intensities of protons and helium nuclei than in other quiet periods. A hypothesis is put forward that acceleration in a multitude of weak solar flares is one of the sources of background fluxes of low energy particles in the interplanetary space.
Kecskemety Károly
Logachev Yu. I.
Surova G. M.
Zeldovich M. A.
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