Variations of the energy spectra of solar X-ray flares: interconnection with the photospheric, chromospheric, and magnetic activity of the Sun (1972−2001)
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Variations of the energy spectra of solar X-ray flares: interconnection with the photospheric, chromospheric, and magnetic activity of the Sun (1972−2001)
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| Creator |
Kasinskii, V.
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| Subject |
MS2: Physics of Solar Atmosphere
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| Description |
The problem of flare energy distribution of the Sun is strongly related to the power-law energy spectra of flares on the UV Ceti-type stars. In a preliminary study (1972–1993), the X-ray flare integral energy spectrum (IES) was represented by a unique power law of N ~ E−b with index b = 0.76. Later it was shown that the exponent index b varies with the cycle phase, that is with the Wolf number. The purpose of this paper is to investigate the temporal variations in the power-law spectrum of soft X-ray flares over the three solar cycles (1972–2001). A more extensive statistic (56 000 flares) allows us to revise earlier results and to derive new ones. Not only b-index undergoes variations associated with a 11-year cycle but the limiting energy of flares (log Em) as well. The three-cycle-averaged b is 0.666, with variations in the range 0.50 < b < 0.80. The results may be useful for study of flare activity on red dwarf stars.
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| Date |
2015-04-03T15:26:59Z
2015-04-03T15:26:59Z 2005 |
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| Type |
Article
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| Identifier |
Variations of the energy spectra of solar X-ray flares: interconnection with the photospheric, chromospheric, and magnetic activity of the Sun (1972−2001) / V. Kasinskii // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 105-109. — Бібліогр.: 5 назв. — англ.
0233-7665 http://dspace.nbuv.gov.ua/handle/123456789/79614 |
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| Language |
en
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| Relation |
Кинематика и физика небесных тел
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| Publisher |
Головна астрономічна обсерваторія НАН України
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