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3D reconstruction of coronal loops by the principal component analysis
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Nisticò, Giuseppe, Verwichte, E. (Erwin) and Nakariakov, V. M. (Valery M.) (2013) 3D reconstruction of coronal loops by the principal component analysis. Entropy, Volume 15 (Number 10). pp. 4520-4539. doi:10.3390/e15104520 ISSN 1099-4300.
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Official URL: http://dx.doi.org/10.3390/e15104520
Abstract
Knowing the three dimensional structure of plasma filaments in the uppermost part of the solar atmosphere, known as coronal loops, and especially their length, is an important parameter in the wave-based diagnostics of this part of the Sun. The combination of observations of the Sun from different points of observations in space, thanks to the most recent missions, including the Solar Dynamics Observatory (SDO) and the Solar TErrestrial RElations Observatory (STEREO), allows us to infer information about the geometrical shape of coronal loops in 3D space. Here, we propose a new method to reconstruct the loop shape starting from stereoscopically determined 3D points, which sample the loop length, by principal component analysis. This method is shown to retrieve in an easy way the main parameters that define the loop, e.g., the minor and major axes, the loop plane, the azimuthal and inclination angles, for the special case of a coplanar loop.
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): | Sun -- Loop prominences -- Mathematical models, Principal components analysis | ||||||||
Journal or Publication Title: | Entropy | ||||||||
Publisher: | M D P I AG | ||||||||
ISSN: | 1099-4300 | ||||||||
Official Date: | 22 October 2013 | ||||||||
Dates: |
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Volume: | Volume 15 | ||||||||
Number: | Number 10 | ||||||||
Page Range: | pp. 4520-4539 | ||||||||
DOI: | 10.3390/e15104520 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 28 July 2016 | ||||||||
Date of first compliant Open Access: | 28 July 2016 |
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