EDP Sciences
Free access
Volume 410, Number 2, November I 2003
Page(s) L17 - L19
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20031401

A&A 410, L17-L19 (2003)
DOI: 10.1051/0004-6361:20031401


On dissipative effects in solar prominences

I. Ballai

Space & Atmosphere Research Center, Dept. of Applied Mathematics, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield, S3 7RH, England, UK
(Received 8 July 2003 / Accepted 11 September 2003)

The present paper aims to discuss the possible dissipative mechanisms acting in a coronal prominence. These mechanism are discussed within the context of spatial damping of linear compressional waves. The obtained results show that the dominant mechanism is thermal radiation provided the supposition of optically thin prominence is valid. Damping due to thermal conduction is a viable attenuation mechanism provided the wavelength of the waves is short.

Key words: Sun: atmosphere -- prominences -- evolution -- magnetic fields -- magnetohydrodynamics -- numerical

© ESO 2003