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Solar Physics

, Volume 266, Issue 2, pp 349–367 | Cite as

Web-Based Data Processing System for Automated Detection of Oscillations with Applications to the Solar Atmosphere

  • R. A. SychEmail author
  • V. M. Nakariakov
  • S. A. Anfinogentov
  • L. Ofman
Solar Image Processing and Analysis

Abstract

A web-based, interactive system for the remote processing of imaging data sets (i.e., EUV, X-ray, and microwave) and the automated interactive detection of wave and oscillatory phenomena in the solar atmosphere is presented. The system targets localized, but spatially resolved, phenomena such as kink, sausage, and longitudinal propagating and standing waves. The system implements the methods of Periodmapping for pre-analysis, and Pixelized Wavelet Filtering for detailed analysis of the imaging data cubes. The system is implemented on the dedicated data-processing server http://pwf.iszf.irk.ru , which is situated at the Institute of Solar-Terrestrial Physics, Irkutsk, Russia. Input data in the .sav, .fits, or .txt formats can be submitted via the local and/or global network (the Internet). The output data can be in the png, jpeg, and binary formats, on the user’s request. The output data are periodmaps; narrowband amplitude, power, phase and correlation maps of the wave’s sources at significant harmonics and in the chosen spectral intervals, and mpeg movies of their evolution. The system was tested by the analysis of the EUV and microwave emission from the active region NOAA 10756 on 4 May 2005 observed with TRACE and the Nobeyama Radioheliograph. The similarity of the spatial localization of three-minute propagating waves, near the footpoint of locally open magnetic-field lines determined by the potential-field extrapolation, in both the transition region and the corona was established. In the transition region the growth of the three-minute amplitude was found to be accompanied by the decrease in the line-of-sight angle to the wave-propagation direction.

Keywords

Coronal oscillations Coronal waves EUV 

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • R. A. Sych
    • 1
    Email author
  • V. M. Nakariakov
    • 2
  • S. A. Anfinogentov
    • 1
  • L. Ofman
    • 3
  1. 1.Institute of Solar-Terrestrial PhysicsIrkutskRussia
  2. 2.Physics DepartmentUniversity of WarwickCoventryUK
  3. 3.The Catholic University and NASA Goddard Space Flight CenterGreenbeltUSA

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