VERTICAL KINK OSCILLATION OF A MAGNETIC FLUX ROPE STRUCTURE IN THE SOLAR CORONA

Vertical transverse oscillations of a coronal magnetic rope, observed simultaneously in the 171 [Angstrom] and 304 [Angstrom] bandpasses of the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory (SDO), are detected. The oscillation period is about 700 s and the displacement amplitu...

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Bibliographic Details
Published in:Astrophysical journal. Letters 2014-12, Vol.797 (2), p.1-5
Main Authors: Kim, S, Nakariakov, V M, Cho, K-S
Format: Article
Language:English
Subjects:
AMPLITUDES
Arcades
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Atmospherics
Austenitic stainless steels
Constants
Coronas
KINK INSTABILITY
MAGNETIC FLUX
OSCILLATIONS
Rope
SOLAR CORONA
SOLAR FLARES
Solar observatories
STAR EVOLUTION
SUN
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Summary:Vertical transverse oscillations of a coronal magnetic rope, observed simultaneously in the 171 [Angstrom] and 304 [Angstrom] bandpasses of the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory (SDO), are detected. The oscillation period is about 700 s and the displacement amplitude is about 1 Mm. The oscillation amplitude remains constant during the observation. Simultaneous observation of the rope in the bandpasses corresponding to the coronal and chromospheric temperatures suggests that it has a multi-thermal structure. Oscillatory patterns in 171 [Angstrom] and 304 [Angstrom] are coherent, which indicates that the observed kink oscillation is collective, in which the rope moves as a single entity. We interpret the oscillation as a fundamental standing vertically polarized kink mode of the rope, while the interpretation in terms of a perpendicular fast wave could not be entirely ruled out. In addition, the arcade situated above the rope and seen in the 171 [Angstrom] bandpass shows an oscillatory motion with the period of about 1000 s.
ISSN:2041-8213
2041-8205
2041-8213
DOI:10.1088/2041-8205/797/2/L22