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Main Page   >   Data   >   Solar Activity  >   Solar Flare Events

New data - Current catalog of solar flare events of XXV solar activity cycle with X-ray class M1 - X>17.5
            Catalog of solar flare events in the Нα line (1972 − 2023) !

Solar Flare Events

Flare events are the complex of dynamic phenomena on the Sun that are the result of the interaction of a new emerging magnetic flux with already existing magnetic fields, both in active regions and outside them. Observations showed that the growth of flare activity in groups of spots is closely related to the emergence of new emerging magnetic fluxes and for the implementation of solar flares of large and medium power, changes in the very structure of the magnetic field of the active region are necessary.

Flare events of large and medium poins in the active region are always (without exception) grouped in a series, are carried out in a limited, fairly short time interval. Depending on the degree of development of the active region, the characteristics of its magnetic field and the power of the new floating magnetic flux, this time interval can take from 16 to 80 hours, on average 55 ± 30 hours or 16% of the time of passage of the active region along the solar disk.

A solar flare is a reaction of the solar atmosphere (mainly the chromosphere and corona) to a sudden rapid process of energy emission in the interaction of magnetic fields, which results in the rapid heating of a small limited area and to rapid acceleration of electrons and protons. n this case, the temperature in the chromosphere reaches up to 104° K, and in the corona - up to 107° K. The energy of the registered particles is from 20 keV to >10 GeV. The total energy released during the most powerful flares,exceeds 1032 erg.
Catalogs of solar flare events of XXIII, XXIV and XXV cycles of solar activity
with an X-ray ball M1 - X>17.5.       V.N. Ishkov, IZMIRAN
      XXIII cycle - 07.1996-06.2007             PDF file       doi: https://doi.org/10.2205/ESDB-SAD-FE-01
      XXIV cycle - 01.2010-10.2017             PDF file       doi: https://doi.org/10.2205/ESDB-SAD-FE-02
      XXV cycle - 11.2020-06.2030 (current)       PDF file       doi: https://doi.org/10.2205/ESDB-SAD-FE-03
Catalogs of solar flare events in the Нα line.       A.V. Borovik, A.A. Zhdanov, ISTP SB RAS
      01.1972 − 12.2017       doi: https://doi.org/10.2205/ESDB-SAD-FE-04
      01.2018 − 06.2023       doi: https://doi.org/10.2205/ESDB-SAD-FE-05

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