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Title:
Joint observations of propagating oscillations with SOHO/CDS and TRACE
Authors:
Marsh, M. S.; Walsh, R. W.; De Moortel, I.; Ireland, J.
Affiliation:
AA(Centre for Astrophysics, University of Central Lancashire, Preston, PR1 2HE, England), AB(Centre for Astrophysics, University of Central Lancashire, Preston, PR1 2HE, England), AC(School of Mathematics and Statistics, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, Scotland), AD(L3 Communications EER Systems Inc., NASA GSFC, Code 682.3, Bldg. 26, Greenbelt, MD 20771, USA)
Publication:
Astronomy and Astrophysics, v.404, p.L37-L41 (2003) (A&A Homepage)
Publication Date:
06/2003
Origin:
A&A
A&A Keywords:
Sun: Corona, Sun: oscillations, Sun: Transition Region, Sun: UV radiation, waves
DOI:
10.1051/0004-6361:20030709
Bibliographic Code:
2003A&A...404L..37M

Abstract

Joint Observing Program (JOP) 83 Solar and Heliospheric Observatory/Coronal Diagnostic Spectrometer (SOHO/CDS) and Transition Region and Coronal Explorer (TRACE) data is analysed for evidence of propagating intensity oscillations along loop structures in the solar corona. A propagating intensity oscillation with a minimum estimated speed of 50-195 km s-1 is observed within a TRACE 171 Å coronal loop using a running difference method. Co-spatial and co-temporal CDS and TRACE observations of this loop are analysed using a wavelet analysis method. The TRACE data shows a propagating oscillation with a period of ~300 s. This period is also observed with CDS suggesting propagating oscillations at chromospheric, transition region and coronal temperatures in the He I, O V and Mg Ix lines.
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Physics
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