Statistical studies of duration of low-power solar flares
This paper is a sequel to papers dealing with time parameters of solar flares in the Hα line. Using data from the international flare patrol for 1972–2010, we have determined the mean duration of flares of different importance and classes of area. We have established that 94.6 % of flares last more...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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INFRA-M
2018-06-01
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| Series: | Solar-Terrestrial Physics |
| Subjects: | |
| Online Access: | https://naukaru.ru/en/nauka/article/22242/view |
| _version_ | 1819044500373241856 |
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| author | Borovik A.V. Zhdanov A.A. |
| author_facet | Borovik A.V. Zhdanov A.A. |
| author_sort | Borovik A.V. |
| collection | DOAJ |
| description | This paper is a sequel to papers dealing with time parameters of solar flares in the Hα line. Using data from the international flare patrol for 1972–2010, we have determined the mean duration of flares of different importance and classes of area. We have established that 94.6 % of flares last more than 60 min. The duration of 90 % of flares with min is 2.1–3.3 hrs. In rare cases, flares can last about 12 hrs. The duration of powerful solar flares does not exceed 8.3 hrs.
We have found that the duration of solar flares depends on features of their development. Flares with one brilliant point in the flare region have the shortest duration; two-ribbon flares and flares exhibiting several intensity maxima have the longest duration. We have confirmed that the duration of flares increases with increasing classes of area and brightness. |
| first_indexed | 2024-12-21T10:13:40Z |
| format | Article |
| id | doaj.art-24fafba9557e42fbb026da1fa3dd4d45 |
| institution | Directory Open Access Journal |
| issn | 2500-0535 |
| language | English |
| last_indexed | 2024-12-21T10:13:40Z |
| publishDate | 2018-06-01 |
| publisher | INFRA-M |
| record_format | Article |
| series | Solar-Terrestrial Physics |
| spelling | doaj.art-24fafba9557e42fbb026da1fa3dd4d452022-12-21T19:07:39ZengINFRA-MSolar-Terrestrial Physics2500-05352018-06-014281610.12737/stp-42201803Statistical studies of duration of low-power solar flaresBorovik A.V.0Zhdanov A.A.1Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, RussiaInstitute of Solar-Terrestrial Physics SB RAS, Irkutsk, RussiaThis paper is a sequel to papers dealing with time parameters of solar flares in the Hα line. Using data from the international flare patrol for 1972–2010, we have determined the mean duration of flares of different importance and classes of area. We have established that 94.6 % of flares last more than 60 min. The duration of 90 % of flares with min is 2.1–3.3 hrs. In rare cases, flares can last about 12 hrs. The duration of powerful solar flares does not exceed 8.3 hrs. We have found that the duration of solar flares depends on features of their development. Flares with one brilliant point in the flare region have the shortest duration; two-ribbon flares and flares exhibiting several intensity maxima have the longest duration. We have confirmed that the duration of flares increases with increasing classes of area and brightness.https://naukaru.ru/en/nauka/article/22242/viewSolar activitySolar flares |
| spellingShingle | Borovik A.V. Zhdanov A.A. Statistical studies of duration of low-power solar flares Solar-Terrestrial Physics Solar activity Solar flares |
| title | Statistical studies of duration of low-power solar flares |
| title_full | Statistical studies of duration of low-power solar flares |
| title_fullStr | Statistical studies of duration of low-power solar flares |
| title_full_unstemmed | Statistical studies of duration of low-power solar flares |
| title_short | Statistical studies of duration of low-power solar flares |
| title_sort | statistical studies of duration of low power solar flares |
| topic | Solar activity Solar flares |
| url | https://naukaru.ru/en/nauka/article/22242/view |
| work_keys_str_mv | AT borovikav statisticalstudiesofdurationoflowpowersolarflares AT zhdanovaa statisticalstudiesofdurationoflowpowersolarflares |