Planetary Radio Emissions VII Proceedings of the 7th International Workshop on
Planetary, Solar and Heliospheric Radio Emissions held at Graz, Austria, September 15–17, 2010
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Verlag der Österreichischen Akademie der Wissenschaften Austrian Academy of Sciences Press
A-1011 Wien, Dr. Ignaz Seipel-Platz 2
Tel. +43-1-515 81/DW 3420, Fax +43-1-515 81/DW 3400 https://verlag.oeaw.ac.at, e-mail: verlag@oeaw.ac.at |
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DATUM, UNTERSCHRIFT / DATE, SIGNATURE
BANK AUSTRIA CREDITANSTALT, WIEN (IBAN AT04 1100 0006 2280 0100, BIC BKAUATWW), DEUTSCHE BANK MÜNCHEN (IBAN DE16 7007 0024 0238 8270 00, BIC DEUTDEDBMUC)
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Planetary Radio Emissions VII Proceedings of the 7th International Workshop on
Planetary, Solar and Heliospheric Radio Emissions held at Graz, Austria, September 15–17, 2010
ISBN 978-3-7001-7125-6 Print Edition ISBN 978-3-7001-7246-8 Online Edition
Helmut Rucker
Space Research Institute, Austrian Academy of Sciences, Graz, Austria William Kurth Department of Physics and Astronomy, University of Iowa, Iowa City, USA Philippe Louarn Centre d'Etude Spatiale de Rayonnements, CNRS/Universitè Paul-Sabatier Toulouse III, Toulouse, France Georg Fischer Space Research Institute, Austrian Academy of Sciences, Graz, Austria
L. Lamy,
P. Schippers,
P. Zarka,
B. Cecconi,
C. S. Arridge,
M. K. Dougherty,
P. Louarn,
N. André,
W. S. Kurth,
R. Mutel,
D. A. Gurnett,
A. J. Coates
S. 97 - 98 doi:10.1553/PRE7s97 Verlag der Österreichischen Akademie der Wissenschaften
Abstract: On 17 October 2008, the Cassini spacecraft crossed the southern sources of Saturn kilometric radiation (SKR), while flying along high-latitude nightside magnetic field lines. In situ measurements allowed us to characterize for the first time the source region of an extra-terrestrial auroral radio emission. Using radio, magnetic field and particle observations, we characterize the plasma environment surrounding the SKR sources. Magnetic field lines supporting local as well as distant radio sources (detected on both extraordinary and ordinary modes) map a continuous, high-latitude and spiral-shaped unusual auroral oval observed on the dawnside, consistent with enhanced auroral activity. While investigating the Cyclotron Maser Instability (CMI) as a mechanism responsible for SKR generation, we find that observed cutoff frequencies are consistent with radio waves amplified perpendicular to the magnetic field by hot (6 to 9 keV) resonant electrons, measured locally. Finally, we confirm and quantify previous observations of the SKR elliptical polarization, found to evolve toward circular polarization with the distance to the source. Published Online: 2011/12/28 13:22:54 Object Identifier: 0xc1aa5576 0x002a1cfd Rights: .
… The 7th International Workshop on "Planetary, Solar and Heliospheric Radio Emissions" is the continuation of an established tradition: This PRE VII conference followed previous successful international workshops held at Graz, Austria, in 1984, 1987, 1991, 1996, 2001, and 2005. This 7th workshop in September 2010 offered again the unique opportunity to discuss the observations from Cassini at Saturn and to investigate the measurements by other spacecraft and from the ground of the Jovian, terrestrial and solar radio emissions, also including studies on radiation from exoplanetary sources.
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Verlag der Österreichischen Akademie der Wissenschaften Austrian Academy of Sciences Press
A-1011 Wien, Dr. Ignaz Seipel-Platz 2
Tel. +43-1-515 81/DW 3420, Fax +43-1-515 81/DW 3400 https://verlag.oeaw.ac.at, e-mail: verlag@oeaw.ac.at |