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 language | English |
---|---|
Pages (from-to) | L37-L41 |
Number of pages | 5 |
Journal | Astronomy & Astrophysics |
Volume | 404 |
DOIs | |
Publication status | Published - 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