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Astronomy Reports V. 45, I. 04
, 2001 Astronomy Reports -- April 2001 Volume 45, Issue 4, pp. 249-329 BL Lac: A New Ultrahigh-Energy Gamma-Ray Source Yu. I. Neshpor, N. N. Chalenko, A. A. Stepanian, O. R. Kalekin, N. A. Jogolev, V. P. Fomin, and V. G. Shitov pp. 249-254 Full Text:
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Chromosphärische und coronale Aktivität : Analyse optischer Spektren von M Zwergen
, 2005 Unter stellarer Aktivität werden eine Reihe von Phänomenen in den unterschiedlichen Atmosphärenschichten zusammengefasst, die eng mit dem Magnetfeld des einzelnen Sterns verbunden sind.
Fuhrmeister, Birgit
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Large flare on the red dwarf star UV Ceti
Nature, 1974ATTEMPTS to measure radio emission occurring simultaneously with the sporadic optical flares on the red dwarf dMe type stars have been hindered by the rarity of large flares. Apart from one case of a flare with an unusually long duration and a peak magnitude of 1.7 (ref. 1) the correlation so far established has been limited to flares of about 1 mag or
Bernard Lovell +2 more
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Coordinated observations of the red dwarf flare star EV LAC in 1994 and 1995
Astronomical and Astrophysical Transactions, 1998Abstract The results of photometric, spectral and radio studies of the flare star EV Lac we obtained during the course of cooperative observations in 1994 and 1995 are presented. A quantitative analysis of the radiation emitted by two powerful flares using the colour-colour diagram confirms the previous conclusion on the essential heterogeneity of ...
E P Abranin +2 more
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ENVIRONMENTAL EFFECTS OF FLARES FROM RED DWARF STARS
International Journal of Modern Physics E, 2011We examine some environmental effects appearing on exoplanets in the habitable zone of red dwarfs, during the first billion years of the star evolution. We focus on the radiative perturbation that the frequent stellar flares would cause on the planet surface and down the assumed planetary ocean, with some insight on the affectation of potential life ...
LIUBA PEÑATE +2 more
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Emission lines of the red-dwarf flare star EV Lac: Stellar flares
Astronomy Reports, 2001We present equivalent widths and profiles for Hα Hβ, Hγ and He I λ4471 A emission lines obtained in observations of the flares of EV Lac made at the Crimean Astrophysical Observatory in 1994 and 1995. Our semi-empirical modeling of the flares gives insight into the structure of the emitting regions, including a temperature plateau, and also into the ...
É. A. Baranovskii +2 more
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Coordinated Observations of the Red Dwarf Flare Star EV Lac in 1993
Astrophysics and Space Science, 1997Results of cooperative observations of the flare star EV Lac in September 1993 are presented. One of the about 30 optical flares detected was powerful enough to permit a quantitative analysis of its intrinsic radiation with the colour-colour technique.
E.P. Abranin +10 more
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Interferometric observations of weak radio flares from a red dwarf star
Nature, 1978MEASUREMENT of the radio emission associated with flares on M-type red dwarf stars has been difficult because of the sporadic and transient nature of the phenomena, and the danger of confusion with terrestrial sources of emission. The existence of detectable radio emission from the flares was first established by integration and correlation with the ...
R. J. DAVIS +3 more
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2022
The problem of energetics of flare activity of dwarf stars in the lower main sequence of the Hertzsprung-Russell diagram is relevant in the context of the detection of powerful flares (superflares) and the possibility of assessing such phenomena on the Sun in the past and future. A brief historical review of the EV Lac original researches is presented,
Shlyapnikov, A.A., Gorbachev, M.A.
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The problem of energetics of flare activity of dwarf stars in the lower main sequence of the Hertzsprung-Russell diagram is relevant in the context of the detection of powerful flares (superflares) and the possibility of assessing such phenomena on the Sun in the past and future. A brief historical review of the EV Lac original researches is presented,
Shlyapnikov, A.A., Gorbachev, M.A.
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Flaring red dwarf stars: news from Crimea
Uspekhi Fizicheskih Nauk, 1998Important phenomena are briefly described which have recently been discovered in the Crimean studies of flaring red dwarf stars believed to be the most common type of variable stars in the Galaxy. These phenomena include (i) long-lived radiation from a blueshifted component in the ionized-helium λ 4686 A emission line in the active state of one such ...
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