Loading…

THE SOURCE OF 3 MINUTE MAGNETOACOUSTIC OSCILLATIONS IN CORONAL FANS

We use images of high spatial, spectral, and temporal resolution, obtained using both ground- and space-based instrumentation, to investigate the coupling between wave phenomena observed at numerous heights in the solar atmosphere. Analysis of 4170 A continuum images reveals small-scale umbral inten...

Full description

Saved in:
Bibliographic Details
Published in:The Astrophysical journal 2012-10, Vol.757 (2), p.1-14
Main Authors: Jess, D B, DE MOORTEL, I, Mathioudakis, M, Christian, D J, Reardon, K P, Keys, P H, Keenan, F P
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We use images of high spatial, spectral, and temporal resolution, obtained using both ground- and space-based instrumentation, to investigate the coupling between wave phenomena observed at numerous heights in the solar atmosphere. Analysis of 4170 A continuum images reveals small-scale umbral intensity enhancements, with diameters ~0".6, lasting in excess of 30 minutes. We find a maximum waveguide inclination angle of approximately 40[degrees] between photospheric and chromospheric heights, combined with a radial expansion factor of
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/757/2/160