Intense plasma wave emissions associated with Saturn's moon Rhea

0367417 - ÚFA 2012 RIV US eng J - Journal Article
Santolík, Ondřej - Gurnett, D. A. - Jones, G. H. - Schippers, P. - Crary, F. J. - Leisner, J. S. - Hospodarsky, G. B. - Kurth, W. S. - Russell, C. T. - Dougherty, M. K.
Intense plasma wave emissions associated with Saturn's moon Rhea.
Geophysical Research Letters. Roč. 38, - (2011), L19204/1-L19204/7. ISSN 0094-8276. E-ISSN 1944-8007
R&D Projects: GA ČR GAP205/10/2279; GA MŠMT(CZ) ME10001; GA MŠMT(CZ) LH11122
Institutional research plan: CEZ:AV0Z30420517
Keywords : III RADIO-BURSTS * LANGMUIR-WAVES * ICY MOON * CASSINI * ELECTRONS
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 3.792, year: 2011
http://www.agu.org/pubs/crossref/2011/2011GL049219.shtml

Measurements by the Cassini spacecraft during a close flyby of Saturn's moon Rhea on March 2, 2010, show the presence of intense plasma waves in the magnetic flux tube connected to the surface of the moon. Three types of waves were observed, (1) bursty electrostatic waves near the electron plasma frequency, (2) intense whistler-mode emissions below one half of the electron cyclotron frequency, and (3) broadband electrostatic waves at frequencies well below the ion plasma frequency. The waves near the electron plasma frequency are believed to be driven by a low energy (similar to 35 eV) electron beam accelerated away from Rhea. Their bursty structure is believed to be due to a nonlinear process similar to the three-wave interaction that occurs for Langmuir waves in the solar wind.
Permanent Link: http://hdl.handle.net/11104/0202115