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Wide-spectrum slow magnetoacoustic waves in coronal loops
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Tsiklauri, D. and Nakariakov, V. M. (Valery M.) (2001) Wide-spectrum slow magnetoacoustic waves in coronal loops. Astronomy & Astrophysics, Vol.379 (No.3). pp. 1106-1112. doi:10.1051/0004-6361:20011378 ISSN 0004-6361.
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Official URL: http://dx.doi.org/10.1051/0004-6361:20011378
Abstract
A model interpreting variations of EUV brightness upward propagating in solar coronal loops as slow magnetoacoustic waves is developed. A loop is considered to have a non-zero plane inclination angle and offset of the circular loop centre from the baseline. The model also incorporates effects of dissipation and gravitational stratification. A linear evolutionary equation is derived and applied to investigations of slow wave dynamics. Both the non-zero plane inclination and the offset decrease the growth of the wave amplitude due to stratification. It is shown that wide-spectrum slow magnetoacoustic waves, consistent with currently available observations in the low frequency part of the spectrum, can provide a rate of heat deposition sufficient to heat the loop. In this scenario, the heat would be deposited near the loop footpoints, which agrees with the current observational data.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QB Astronomy | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Magnetohydrodynamic waves, Sun -- Corona, Sun -- Loop prominences, Solar oscillations | ||||
Journal or Publication Title: | Astronomy & Astrophysics | ||||
Publisher: | EDP Sciences | ||||
ISSN: | 0004-6361 | ||||
Official Date: | December 2001 | ||||
Dates: |
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Volume: | Vol.379 | ||||
Number: | No.3 | ||||
Page Range: | pp. 1106-1112 | ||||
DOI: | 10.1051/0004-6361:20011378 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Funder: | Particle Physics and Astronomy Research Council (Great Britain) (PPARC) |
Data sourced from Thomson Reuters' Web of Knowledge
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