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Transverse oscillations and stability of prominences in a magnetic field dip
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Kolotkov, Dmitrii, Nisticò, Giuseppe and Nakariakov, V. M. (2016) Transverse oscillations and stability of prominences in a magnetic field dip. Astronomy & Astrophysics, 590 . A120. doi:10.1051/0004-6361/201628501
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Official URL: http://dx.doi.org/10.1051/0004-6361/201628501
Abstract
Aims. An analytical model of the global transverse oscillations and mechanical stability of a quiescent prominence in the magnetised environment with a magnetic field dip, accounting for the mirror current effect, is developed. Methods. The model is based upon the interaction of line currents through the Lorentz force. Within this concept the prominence is treated as a straight current-carrying wire, and the magnetic dip is provided by two photospheric current sources. Results. Properties of both vertical and horizontal oscillations are determined by the value of the prominence current, its density and height above the photosphere, and the parameters of the magnetic dip. The prominence can be stable in both horizontal and vertical directions simultaneously when the prominence current dominates in the system and its height is less than the half-distance between the photospheric sources.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||||
| Divisions: | Faculty of Science > Physics | ||||||
| Library of Congress Subject Headings (LCSH): | Sun -- Filaments, Solar magnetic fields, Sun -- Corona | ||||||
| Journal or Publication Title: | Astronomy & Astrophysics | ||||||
| Publisher: | EDP Sciences | ||||||
| ISSN: | 0004-6361 | ||||||
| Official Date: | 25 May 2016 | ||||||
| Dates: |
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| Date of first compliant deposit: | 14 April 2016 | ||||||
| Volume: | 590 | ||||||
| Article Number: | A120 | ||||||
| DOI: | 10.1051/0004-6361/201628501 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Funder: | European Research Council (ERC), Science and Technology Facilities Council (Great Britain) (STFC), Korea (South). Kyoyuk Kwahak Kisulbu [Ministry of Education, Science and Technology] (MEST) | ||||||
| Grant number: | Project No. 321141 SeismoSun (ERC), ST/L000733/1 (STFC), BK21 (MEST) |
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