Yohkoh observations of the Neupert effect
Received 18 February 1998 / Accepted 4 November 1998
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.
Key words: Sun: X-rays, gamma rays Sun: flares Sun: corona
This article contains no SIMBAD objects.
© European Southern Observatory (ESO) 1999
Online publication: February 22, 1999