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Observation of fast variations of the helium-ion abundance in the solar wind |
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| Authors: | G. N. Zastenker I. V. Koloskova M. O. Riazantseva A. S. Yurasov J. Safrankova Z. Nemecek L. Prech P. Cagas |
| Affiliation: | 1. Space Research Institute, Russian Academy of Sciences, ul. Profsoyuznaya 84/32, Moscow, 117997, Russia 2. Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119992, Russia 3. Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic |
| Abstract: | This paper describes the results of studying the helium component of the solar-wind ion-flux measurement by the BMSW instrument on the Spektr-R satellite with a time resolution of 3 s. In contrast to most previous works that presented values averaged over large (hourly average or daily average) intervals, we have shown that the relative helium-ion abundance in the solar wind experiences considerable (by a few percent and even 10%) variations on such short intervals as 10 seconds or even several seconds. |
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