Radio Observations of the Onset of an EIT Wave

Details Radio Observations of the Onset of an EIT Wave Radio Observations of the Onset of an EIT Wave

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.2904w&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #29.04; Bulletin of the American Astronomical Society, Vol. 34, p.681

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Scientific paper

We present observations of the early development of an ``EIT wave'' made with the Nobeyama Radio Heliograph at 17 GHz. EIT waves are propagating disturbances generated in conjunction with solar flares. They have most easily been seen to date as emission enhancements in full-disk EUV images taken in spectral lines sensitive to 1-2 million degree material. We demonstrate that they can also be seen in high dynamic range radio observations as well. The high cadence of the radio data allows us to show that the EIT wave is not visible until after the onset of the impulsive phase of the flare. A radio movie of the event will be shown. We discuss the implications of this result for the nature of EIT waves and their relationship with other phenomena such as CMEs.

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