Electron Beam as Origin of White-Light Solar Flares
نویسندگان
چکیده
منابع مشابه
On the origin of solar white-light flares
Using the Hα line intensity as a constraint, we study the role of a chromospheric condensation and the role of nonthermal effects in producing the continuum enhancement of white-light flares. Within an acceptable range of Hα line intensities and electron energy flux, it is shown that neither a chromospheric condensation nor non-thermal effects alone can directly explain the observed continuum e...
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High-cadence, multiwavelength optical observations of a solar active region (NOAA 10969), obtained with the Swedish Solar Telescope, are presented. Difference imaging of white light continuum data reveals a white light brightening, 2 min in duration, linked to a co-temporal and co-spatial C2.0 flare event. The flare kernel observed in the white light images has a diameter of 300 km, thus render...
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Particle acceleration by direct-current electric field in the current sheet has been extensively studied, in which an electric and a magnetic field are generally prescribed, and a power law distribution of the electron energy is obtained. Based on MHD numerical simulations of flares, this paper aims at investigating the time evolution of the electron energy spectrum during solar flares. It turn...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1989
ISSN: 0252-9211
DOI: 10.1017/s025292110003178x