Results 11 to 20 of about 2,393 (171)
Solar Physics, 1983 Optical observationd now present considerable information on the flare process. It is always associated with filaments and with simplification of existing magnetic connections, and it arises from the emergence and expansion of new flux.
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Optical Flares: Observations and Interpretations [PDF]
International Astronomical Union Colloquium, 1995 AbstractObservational results on flare stars in the Galaxy and their interpretation, based on the observational approach to early stages of stellar evolution at Byurakan, are considered. The evolutionary path of red flare stars is determined. Stellar flare activity is explained as an internal phenomenon of stars.
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Optical Flares of Cygnus X-1 [PDF]
Symposium - International Astronomical Union, 1998 Photoelectric observations of Cyg X-1 in 1996-97 fulfilled in Tien-Shan, Kazakhstan (WBVR), Mt. Maidanak, Uzbekistan (UBVR) and in Crimea, Ukraine (UBV) have detected unusual optical flare activity. During May-August 1996 Cyg X-1 was in high soft X-ray state and after August 9, 1996 it returned to its ordinary state but with some evidences of X-ray ...
N.G. Bochkarev +2 more
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Solar-Terrestrial Physics, 2017 An electronic database has been created for 123801 solar flares that occurred on the Sun over the period from 1972 to 2010. It is based on catalogs of the Solar Geophysical Data (SGD) and Quarterly Bulletin on Solar Activity.
Borovik A.V., Zhdanov A.A.
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Optical Photometry of Flares and Flare Statistics [PDF]
International Astronomical Union Colloquium, 1983 This review discusses optical observations of flares and the results gleaned from these. Excellent reviews of flare activity have been published in the past and one might mention in particular Kunkel (1975), Gershberg (1978) and Gurzadyan (1980). In general these have been more broadly based than the present review incorporating other aspects of flare ...
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The Astrophysical Journal, 2023 Previous examinations of fully convective M-dwarf stars have highlighted enhanced rates of nanoflare activity on these distant stellar sources. However, the specific role the convective boundary, which is believed to be present for spectral types earlier
S. D. T. Grant +13 more
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Optical and Ultraviolet Stellar Flare Spectroscopy [PDF]
International Astronomical Union Colloquium, 1983 As for solar flares, one of the most physically revealing types of data for M-dwarf flares are high-resolution, time-resolved spectra. Due to the intrinsically faint nature of the M-dwarf stars, spectroscopic data has tended to be of low spectral (˜ 5 Ǻ) and temporal (˜ 5 min) resolution. However, with the development of image intensified spectrographs
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THE OPTICAL DEPTH OF WHITE-LIGHT FLARE CONTINUUM [PDF]
The Astrophysical Journal, 2010 The white-light continuum emission of a solar flare remains a puzzle as regards its height of formation and its emission mechanism(s). This continuum, and its extension into the near UV, contain the bulk of the energy radiated by a flare, and so its explanation is a high priority.
Potts, Hugh +3 more
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The Astrophysical Journal, 2023 We present light curves and flares from a 7 day, multiwavelength observational campaign of AU Mic, a young and active dM1e star with exoplanets and a debris disk. We report on 73 unique flares between the X-ray to optical data.
Isaiah I. Tristan +15 more
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On Impulsive and Gradual Optical Solar Flares [PDF]
International Astronomical Union Colloquium, 1989 AbstractA comparative study of H-alpha intensity and area development of several flares is presented in an attempt to investigate characteristic features of various types of optical solar flares.
A. Bhatnagar +3 more
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