DIRECT DETECTION OF THE HELICAL MAGNETIC FIELD GEOMETRY FROM 3D RECONSTRUCTION OF PROMINENCE KNOT TRAJECTORIES

ABSTRACT Based on the data collected by the Vacuum Tower Telescope located in the Teide Observatory in the Canary Islands, we analyzed the three-dimensional (3D) motion of so-called knots in a solar prominence of 2014 June 9. Trajectories of seven knots were reconstructed, giving information of the...

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Bibliographic Details
Published in:The Astrophysical journal 2016-02, Vol.817 (2), p.123
Main Authors: Zapior, Maciej, Martinez-Gomez, David
Format: Article
Language:English
Subjects:
Approximation
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
DETECTION
ELECTRIC CURRENTS
FILAMENTS
Helical
Knots
MAGNETIC FIELDS
methods: observational
Prominences
SOLAR PROMINENCES
Space telescopes
SUN
Sun: filaments, prominences
Sun: magnetic fields
TELESCOPES
Three dimensional
THREE-DIMENSIONAL CALCULATIONS
TRAJECTORIES
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Summary:ABSTRACT Based on the data collected by the Vacuum Tower Telescope located in the Teide Observatory in the Canary Islands, we analyzed the three-dimensional (3D) motion of so-called knots in a solar prominence of 2014 June 9. Trajectories of seven knots were reconstructed, giving information of the 3D geometry of the magnetic field. Helical motion was detected. From the equipartition principle, we estimated the lower limit of the magnetic field in the prominence to 1-3 G and from the Ampère's law the lower limit of the electric current to 1.2 × 109 A.
ISSN:0004-637X
1538-4357
DOI:10.3847/0004-637X/817/2/123