Open AccessFe/O ratio behavior as an indicator of solar plasma state at different solar activity manifestations and in periods of their absence
Author(s) -
Г. С. Минасянц,
G. S. Minasyants,
Т. М. Минасянц,
T. M. Minasyants,
В. М. Томозов,
В. М. Томозов
Publication year - 2018
Publication title -
solnečno-zemnaâ fizika
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.11
H-Index - 2
ISSN - 2412-4737
DOI - 10.12737/szf-41201804
Subject(s) - solar wind , ion , solar flare , physics , plasma , population , coronal mass ejection , astrophysics , solar cycle , solar minimum , demography , quantum mechanics , sociology
We report the results of the investigation into plasma physical characteristics at various solar activity manifestations and in periods of their absence. These results have been obtained from quantitative estimates of the relative abundance of Fe/O ions in different energy ranges. Maximum values of the Fe/O ratio is shown to correspond to particle fluxes from impulsive flares for ions with energies 30 MeV/n), the Fe/O increase is due to the decisive influence of galactic cosmic rays on the composition of impurity elements in the solar wind under solar minimum conditions. The relative content of heavy elements in galactic cosmic rays 30–500 MeV/n is similar to values in fluxes from gradual flares during high solar activity. During solar minimum without sunspots, the behavior of Fe/O for different ion energy ranges in plasma flows from coronal holes (CH) and in the solar wind exhibits only minor deviations. At the same time, plasma flows associated with the disturbed frontal CH region can be sources of moderate geomagnetic storms.