Statistical studies of duration of low-power solar flares

Aleksandr Borovik; Anton Zhdanov

doi:10.12737/szf-42201803

UDC 52

STATISTICAL STUDIES OF DURATION OF LOW-POWER SOLAR FLARES Statistical studies of duration of low-power solar flares

АА Аа

Published in Solnechno-Zemnaya Fizika · Volume 4, Issue 2 · Pages 35–46 · Rubric: Results of current research

DOI: https://doi.org/10.12737/szf-42201803

Received: 26.01.2018 Accepted: 16.03.2026 Language of publication: RUS

Authors

Aleksandr Borovik

ORCID

Anton Zhdanov

ORCID

Aleksandr Borovik

Academic degree: candidate of physical and mathematical sciences

Institute of Solar Terrestrial Physics SB RAS Russian Federation · Irkutsk

ORCID

Anton Zhdanov

Institute of Solar Terrestrial Physics SB RAS Russian Federation · Irkutsk

ORCID

ABSTRACT

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 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 de-pends 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.

KEYWORDS

solar activity, solar flares

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ВВЕДЕНИЕ

Временные параметры солнечных вспышек были подробно изучены еще в годы становления международного вспышечного патруля. Первые результаты, полученные по относительно небольшим выборкам данных, показали, что солнечные вспышки могут продолжаться от нескольких минут до 12 ч и более [Смит, Смит, 1966].

К настоящему времени Международной службой Солнца накоплен достаточно большой статистический материал по солнечным вспышкам. Это дает возможность провести дополнительные исследования, уточнить временные параметры солнечных вспышек. В последние десятилетия к этой теме обращались в работах [Temmer et al., 2001; Giersch, 2013; Potzi et al., 2014], однако детального анализа сделано не было.

Известно, что продолжительность солнечных вспышек складывается из двух характерных вре-менных интервалов: начальной (флэш-фазы) и главной (основной) фазы. Подробно главная фаза была изучена в работе [Боровик, Жданов, 2017а]. Настоящая работа посвящена исследованию общей продолжительности солнечных вспышек. Особое внимание, как и в предыдущих работах, уделяется вспышкам малой мощности с площадью менее 2 кв. град.

1. Altyntsev A.T., Banin V.G., Kuklin G.V., Tomozov V.M. Solnechnye vspyshki [Solar Flares]. Moscow, Nauka Publ., 1982, 246 p. (In Russian).

2. Antalova A. Comprehensive solar flare indices and duration of H-alpha flares. Contributions of the Astronomical Observatory Skalnate Pleso. 1985, vol. 13, pp. 243-246.

3. Barlas O., Altas L. The duration of spotless flares. Astrophys. Space Sci. 1992, vol. 197, no. 2, pp. 337-341. DOI: 10.1007/ BF00645745.

4. Borovik A.V., Myachin D.Yu. Structure and development of the spotless flare on March 16, 1981. Geomagnetism and Aeronomy. 2010, vol. 50, no. 8, pp. 937-949. DOI: 10.1134/ S0016793210080037.

5. Borovik A.V., Zhdanov A.A. Statistical studies of low-power solar flares. Main phase duration. Solar-Terrestrial Physics. 2017a, vol. 3, no. 4, pp. 5-16. DOI:https://doi.org/10.12737/stp-34201701.

6. Borovik A.V., Zhdanov A.A. Statistical studies of low-power solar flares. Distributions of flares by area, brightness and classes. Solar-Terrestrial Physics. 2017b, vol. 3, no. 1, pp. 40-56. DOI:https://doi.org/10.12737/article_58f96fda7e3e76.83058648.

7. Borovik A.V., Myachin D.Yu., Tomozov V.M. Ob-servation of spotless solar flares at Baikal Astrophysical Observatory of ISTP SB RAS and their interpretation. Izvestiya Irkutskogo Gosudarstvennogo Universiteta» Ser. “Nauki o Zemle” [The Bulletin of Irkutsk State University. Ser. Earth Sciences]. 2014, vol. 7, no. 1, pp. 23-45. (In Russian).

8. Carmichael H. A process for flares. Proc. AAS-NASA Symp. on the Physics of Solar Flares (NASA-SP 50). 1964, pp. 451-456.

9. Dodson H.W., Hedeman E.R., McMath R.R. Photometry of solar flares. Astrophys. J. Suppl. 1956, vol. 2, pp. 241-270.

10. Ellison M.A. Characteristic properties of chromo-spheric flares. Monthly Not. Royal Astron. Soc. 1949, vol. 109, pp. 3-27.

11. Fletcher L., Dennis B.R., Hudson H.S., Krucker S., Phillips K., Veronig A., Battaglia M., Bone L.. Caspi A., Chen Q., Gallagher P., Grigis P.T., Ji H., Liu W., Milligan R.O., Temmer M. An observational over-view of solar flares. Space Sci. Rev. 2011, vol. 159, pp. 19-106. DOI:https://doi.org/10.1007/s11214-010-9701-8.

12. Giersch O. GONG Inter-site Hα flare comparison. J. Phys. Conf. Ser. 2013, vol. 440, 0120062013. DOI:https://doi.org/10.1088/1742-6596/440/1/012006.

13. Giovanelli R.G. Chromospheric flares. Monthly Not. Royal Astron. Soc. 1948, vol. 108, pp.163-176.

14. Hirayama T. Theoretical model of flares and prominences. I: evaporating flare model. Solar Phys. 1974, vol. 34, no. 2, pp. 323-338.

15. Hyder C.L. A phenomenological model for dispari-tions brusques followed by flare-like chromospheric brightenings. Solar Phys. 1967, vol. 2, no. 3, pp. 267-284.

16. Kopp R.A., Pneuman G.W. Magnetic reconnection in the corona and the loop prominence phenomenon. Solar Phys. 1976, vol. 50, pp. 85-98.

17. Newton H.W., Barton H.J. Bright solar eruptions and radio fadings during the years 1935-1936. Monthly Not. Royal Astron. Soc. 1937, vol. 97, no. 8, pp. 594-611.

18. Potzi W., Veronig A.M., Riegler G., Amerstorfer U., Pock T., Temmer M., Polanec W. Real-time flare de-tection in ground-based Hα imaging at Kanzelhöhe Observatory. Solar Phys. 2014, vol. 290, no. 3, pp. 951-977.

19. Quarterly Bulletin on Solar Activity. 1972-1973.

20. Reid J.H. Cape Lyot Hα-heliograph results. Solar Phys. 1968, vol. 5, no. 2, pp. 207-235.

21. Ružičková-Topolová B. Some characteristics of great solar flares in the period 1957-1965. Bull. Astron. Inst. Czechosl. 1974, vol. 25, pp. 345-352.

22. Solar Geophysical Data. 1975-2010.

23. Smith H., Smith E. Solnechnye vspyshki [Solar Flares] Moscow, Mir Publ., 1966, 426 p. (In Rus-sian). English edition: Smith H.J., Smith E. Solar Flares. Macmillan, 1963, 322 p.

24. Sturrock P.A. Model of the high-energy phase of so-lar flares. Nature. 1966, vol. 211, pp. 695-697.

25. Švestka Z., Dodson-Prince H.W., Martin S.F., Mohler O.C., Moore R.L., Nolte J.T., Petrasso R.D. Study of the post-flare loops on 29 July 1973. Solar Phys. 1982, vol. 78, no. 2, pp. 271-285. DOI:https://doi.org/10.1007/BF00151609.

26. Temmer M., Veronig A., Hanslmeier A., Otruba W., Messerotti M. Statistical analysis of solar Hα flares. Astron. Astrophys. 2001, vol. 375, pp. 1049-1061.

27. Waldmeier M. Chromosphärische eruptionen. I. Mit 6 Abbildungen. Zeitschrift für Astrophysik. 1938, vol. 16, pp. 276-290.

28. Waldmeier M. Astron. Mitt. Zürich. 1948, no. 153.

29. Waldmeier M., Bachmann H. Statistik der son-neneruptionen 1945-1954. Zeitschrift für Astro-physik. 1959, vol. 47, pp. 81-93.

30. Warwick C.S. Some characteristics of solar flares. Astrophys. J. 1954, vol. 120, pp. 237-244.

31. Wilson R.M. Statistical aspects of the 1980 solar flares - III. Parametric comparison and final com-ments. NASA Techn. Memo. 82526. Marshall Space Flight Center, Alabama, 1983, 27 p.

32. Wilson R.M. Statistical Aspects of Solar Flares .1987. 40 p. (NASA Techn. Paper 2714).

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Geliy Zherebtsov

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Aleksandr Stepanov

stepanov@gaoran.ru

Deputy Editor-in-Chief

Alexander Potapov

potapov@iszf.irk.ru

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Natalia Polyushkina

npol@iszf.irk.ru

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Borovik A. V., Zhdanov A. A. Statistical studies of duration of low-power solar flares // Solnechno-Zemnaya Fizika. 2018. no. 2. pp. 35-46. DOI: https://doi.org/10.12737/szf-42201803. (Date of access 18.10.2026).

MLA

Aleksandr Borovik, Zhdanov A. A.. "Statistical studies of duration of low-power solar flares." Solnechno-Zemnaya Fizika 4.2 (2018): 35-46. DOI: https://doi.org/10.12737/szf-42201803.

APA

Borovik A. V., Zhdanov A. A. (2018). Statistical studies of duration of low-power solar flares. Solnechno-Zemnaya Fizika, 4(2), 35-46. https://doi.org/10.12737/szf-42201803

Chicago

Aleksandr Borovik, Zhdanov A. A.. "Statistical studies of duration of low-power solar flares." Solnechno-Zemnaya Fizika 4, no. 2 (2018): 35-46. https://doi.org/10.12737/szf-42201803.

WIKI

{{cite journal | author = Borovik A. V., Zhdanov A. A. | title = Statistical studies of duration of low-power solar flares | journal = Solnechno-Zemnaya Fizika | year = 2018 | volume = 4 | issue = 2 | pages = 35-46 | doi = 10.12737/szf-42201803 }}

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STATISTICAL STUDIES OF DURATION OF LOW-POWER SOLAR FLARES Statistical studies of duration of low-power solar flares

ВВЕДЕНИЕ

Confirmation