The Neupert effect in solar flares and implications for coronal heating

Details The Neupert effect in solar flares and implications for coronal heating The Neupert effect in solar flares and implications for coronal heating

2002-08-05

arxiv.org/abs/astro-ph/0208089v1

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, to be published in: Magnetic Coupling of the Solar Atmosphere, Proceedings of the Euroconference and IAU C

Scientific paper

Based on simultaneous observations of solar flares in hard and soft X-rays we studied several aspects of the Neupert effect. About half of 1114 analyzed events show a timing behavior consistent with the Neupert effect. For these events, a high correlation between the soft X-ray peak flux and the hard X-ray fluence is obtained, being indicative of electron-beam-driven evaporation. However, for about one fourth of the events there is strong evidence for an additional heating agent other than electron beams. We discuss the relevance of these findings with respect to Parker's idea of coronal heating by nanoflares.

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