Observation of coronal loop torsional oscillation

Details Observation of coronal loop torsional oscillation Observation of coronal loop torsional oscillation

2003-01-16

arxiv.org/abs/astro-ph/0301316v1

Astron.Astrophys.399:L15,2003

Astronomy and Astrophysics

Astrophysics

Accepted in Astronomy and Astrophysics

Scientific paper

10.1051/0004-6361:20030084

We suggest that the global torsional oscillation of solar coronal loop may be observed by the periodical variation of a spectral line width. The amplitude of the variation must be maximal at the velocity antinodes and minimal at the nodes of the torsional oscillation. Then the spectroscopic observation as a time series at different heights above the active region at the solar limb may allow to determine the period and wavelength of global torsional oscillation and consequently the Alfv{\'e}n speed in corona. From the analysis of early observation (Egan & Schneeberger \cite{egan}) we suggest the value of coronal Alfv{\'e}n speed as $\sim 500 {\rm km}{\cdot}{\rm s}^{-1}$.

Affiliated with

Also associated with

No associations

Rating

Observation of coronal loop torsional oscillation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Observation of coronal loop torsional oscillation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of coronal loop torsional oscillation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-534711