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Astronomy & Astrophysics manuscript no. spectra c ESO 2006 October 6, 2006
 

Summary: Astronomy & Astrophysics manuscript no. spectra c ESO 2006
October 6, 2006
Analysis of power spectra of Doppler shift time series as a
diagnostic tool for quiescent coronal loops
Y. Taroyan1, R. Erd´elyi1, J.G. Doyle2, and S.J. Bradshaw3
1
Solar Physics and upper-Atmosphere Research Group, Department of Applied Mathematics, University of Sheffield, Sheffield, S3 7RH,
England
2
Armagh Observatory, College Hill, Armagh BT61 9DG, N. Ireland
3
Space & Atmospheric Physics, Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ, England
Received 27 June
ABSTRACT
Context. Analysing the structure of solar coronal loops is crucial to our understanding of the processes which heat and maintain the coronal
plasma at multimillion degree temperatures. The determination of the physical parameters of the loops remains both an observational and
theoretical challenge.
Aims. The present work is aimed at tackling some of these challenges such as the determination of the average loop temperature and its
distribution along a given loop.
Methods. A novel diagnostic technique for quiescent coronal loops based on the analysis of power spectra of Doppler shift time series is

  

Source: Armagh Observatory

 

Collections: Physics