Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-26T03:59:28.099Z Has data issue: false hasContentIssue false
  • English
  • Français

High Time Resolution Photometry of Red Dwarf Flare Stars III. The Most Rapid and Faintest Observed Stellar Flares; their Physics and Statistics

Published online by Cambridge University Press:  27 September 2017

G.M. Beskin ,
S.I. Neizvestnyj ,
V.L. Plakhotnichenko ,
L.A. Pustil'nik ,
V.F. Shvartsman  and
R.E. Gershberg
G.M. Beskin
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, 357147 USSR
S.I. Neizvestnyj
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, 357147 USSR
V.L. Plakhotnichenko
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, 357147 USSR
L.A. Pustil'nik
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, 357147 USSR
V.F. Shvartsman
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, 357147 USSR
R.E. Gershberg
Affiliation:
Crimean Astraphysical Observatory, Crimea, Nauchny, 334413 USSR

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

High time resolution monitoring of the UV Cet type flare stars has enabled as to detect flares with total duration of a few seconds and with energy output comparable to solar subflares. We find that the time scales of decay for such flares correspond to recombination times of optically thin gas or to cooling times of optically thick gas heated in flares. Therefore, faster flares cannot be detected individually but their accumulated effect may be one source of brightness fluctuations of the “quiet” star. The upper limit for the total power of such microflares does not exceed the time-averaged power of individually detected flares.

Type
Session I: Stellar Flares
Information
International Astronomical Union Colloquium , Volume 104 , Issue 2: Solar and Stellar Flares , 1989 , pp. 103 - 105
Copyright
Copyright © Kluwer 1989

References

Gershberg, R.E.: 1974, Publ. Crimean Astrophys. Obs. 51, 117.Google Scholar
Gershberg, R.E., Shakhovskaya, N.I.: 1983, Astrophys. Space Sci. 95, 235.Google Scholar
Gershberg, R.E., Petrov, P.P.: 1986, in “Flare stars and related objects”, Mirzoyan, L.V. (ed), Publ. Acad. Sci. Armenian SSR, Erevan, p. 38.Google Scholar
Grinin, V.P., Sobolev, V.V.: 1977, Astrofizika 13, 586.Google Scholar
Katsova, M.M., Kosovichev, A.G., Livshits, M.A.: 1981, Astrofizika 17, 285.Google Scholar
Mochnacki, S., Zirin, H.: 1980, Astrophys. J. 239, 127.Google Scholar
Neizvestnyj, S.I., Pimonov, A.A.: 1978 Comm. Special Astrophys. Obs. 23, 56.Google Scholar
Pimonov, A. A.: 1979, Comm. Special Astrophys. Obs. 25, 31.Google Scholar