GEOTAIL Observations of a Moving Type IV Solar Radio Burst, Type III Solar Radio Bursts, Type II Solar Radio Bursts, and Solar Wind and Magnetospheric Plasma Wave Emissions During the May 19-25 Solar Wind Event

Details GEOTAIL Observations of a Moving Type IV Solar Radio Burst, Type III Solar Radio Bursts, Type II Solar Radio Bursts, and Solar Wind and Magnetospheric Plasma Wave Emissions During the May 19-25 Solar Wind Event GEOTAIL Observations of a Moving Type IV Solar Radio Burst, Type III Solar Radio Bursts, Type II Solar Radio Bursts, and Solar Wind and Magnetospheric Plasma Wave Emissions During the May 19-25 Solar Wind Event

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsh72c..03a&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SH72C-03

Astronomy and Astrophysics

Astronomy

2159 Plasma Waves And Turbulence, 2164 Solar Wind Plasma, 2772 Plasma Waves And Instabilities, 2784 Solar Wind/Magnetosphere Interactions, 6949 Radar Astronomy

Scientific paper

The GEOTAIL Plasma Wave Instrument (PWI) continuously detected a moving Type IV solar radio burst from 800 kHz down to as low as 400 kHz from May 19-23, 2002. The emissions were almost without vertical structure in contrast to that from the leading edge onsets of the Type III solar radio bursts observed before, during, and after the event. Type II solar radio bursts were also detected from May 22 to May 25. Cyclic enhancements in the intensity of both the Type II and Type IV emissions with periods from about half an hour to several hours were observed. On May 24 and May 25 the lower cutoff frequency of Type III solar radio bursts as well as the detected electron plasma oscillation frequency showed that at times the solar wind density was as low as 0.1 e-/cc. The GEOTAIL PWI observations will be compared to those of the WIND Radio Science Experiment (WAVES) during the event and to other pertinent GEOTAIL PWI and WIND WAVES observations including Type III solar radio burst storms and to other low density solar wind events.

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