Other
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsh24a..01k&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SH24A-01
Other
5737 Magnetospheres (2756), 7534 Radio Emissions, 7847 Radiation Processes, 2124 Heliopause And Solar Wind Termination, 2126 Heliosphere/Interstellar Medium Interactions
Scientific paper
Our understanding of the heliosphere has benefitted by the study of radio emissions generated at its boundaries, throughout its volume, and as a result of interactions with magnetized planets at radial distances of 1 to 40 AU. In this talk, we work inwards from the heliopause where one of the most intense (and lowest frequency) heliospheric radio emissions is generated. Emissions in the 1.8 to 3.6 kHz range have helped to provide a size scale for the heliosphere, demonstrated that solar disturbances have effects at the even the most remote extremes of the heliosphere, and even provide information on the state of the local interstellar medium. Over intermediate distances in the heliosphere, the solar wind itself is a rather benign medium for the generation of radio emissions, but it has varying degrees of influence on the generation of cyclotron maser emissions at the magnetized planets. Terrestrial and Saturnian kilometric radiation, for example, are strongly modulated by the solar wind, particularly its pressure. Jovian radio emissions also are influenced by the solar wind, but internal processes seem to play an important role, as well. By remote observations of planetary radio emissions we are able to chart the progress of corotating interaction regions and other solar wind disturbances through the solar system.
Gurnett Donald A.
Kurth Willaim S.
Zarka Ph.
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