Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...342..583t&link_type=abstract
Astronomy and Astrophysics, v.342, p.583-591 (1999)
Astronomy and Astrophysics
Astrophysics
8
Sun: X-Rays, Gamma Rays, Sun: Flares, Sun: Corona
Scientific paper
A Neupert effect is a well-known observational aspect of dynamics of many solar flares during their impulsive phase. Imaging capabilities of the Yohkoh satellite provide a new perspective in an investigation of this effect. In this paper it has been shown that impulsive soft X-ray brightenings are a direct cause of some soft X-ray excess resulting as the Neupert effect. An additional observational confirmation is presented that the impulsive phase of flares showing the Neupert effect is dominated by non-thermal electron beams. The importance of relatively soft (below 10 keV) non-thermal electrons in the production of soft X-ray brightenings is suggested.
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