Radio Emission from the Sun and Stars: New Insights into Energetic Phenomena
Abstract
Energetic phenomena on the Sun pose a number of fascinating puzzles for solar physicists and more generally astrophysicists. These include solar flares involving the catastrophic release of magnetic energy in the low corona and coronal mass ejections which result from the destabilization and expulsion of a significant portion of the corona.
Radio radiation is a sensitive tracer of a variety of energetic processes on the Sun and stars. Radio observations of the Sun over the past decade have produced new insights into the physics of magnetic energy release particle acceleration and coronal and interplanetary shocks. Energetic phenomena on stars are similar to the extent that solar flare analogs appear to be relevant in some cases. However certain phenomena are seen on stars which have no solar counterpart. Observations from the Very Large Array the Nobeyama Radioheliograph the Nancay Radioheliograph and the space-based WIND/WAVES experiment are discussed as well as observations of stars from Arecibo and the Very Long Baseline Array. The next generation of radio telescopes that will yield new progress on these puzzles will be briefly discussed.- Publication:
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Stars as Suns : Activity, Evolution and Planets
- Pub Date:
- January 2004
- Bibcode:
- 2004IAUS..219..145B