Joint observations of propogating oscillations with SOHO/CDS and TRACE

MS Marsh, RW Walsh, Ineke De Moortel, J Ireland

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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 Angstrom 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 approximate to300 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.

Original languageEnglish
Pages (from-to)L37-L41
Number of pages5
JournalAstronomy & Astrophysics
Volume404
DOIs
Publication statusPublished - Jun 2003

Keywords

  • Sun : corona
  • Sun : oscillations
  • Sun : transition region
  • Sun : UV radiation
  • waves
  • LONGITUDINAL INTENSITY OSCILLATIONS
  • CORONAL LOOPS
  • MEASURED PARAMETERS
  • WAVELET ANALYSIS
  • REGION
  • SUNSPOTS
  • PLUMES

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