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NAM2012 - All Presentation Details

Record 315 of 756

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Lightning at Saturn and Jupiter radiation belts emission seen by LOFAR

Author: Julien Girard

LESIA - Observatoire de Paris, France

Co-Authors: Griessmeier J.-M. (LPC2E - Université d'Orléans, France); Hess S. (LATMOS/IPSL, France); Majid W. (JPL Caltech, USA); Tasse C. (GEPI - Observatoire de Paris, France); Zarka P. (LESIA - Observatoire de Paris, France)

Session: INS4: LOFAR, the LOw Frequency ARray: Ongoing Developments and Early Results

Presentation type: Poster      Poster Session B   

Summary:

The Planetary Working Group of the LOFAR Transient Key Project: "Planets & exoplanets" currently works with the LOFAR radiotelescope time-frequency data taken in phased array mode and interferometer mode. Commissionning observations were performed on Saturn lighting and on Jupiter emissions in meter-decameter range. Along with the detection of Saturn lightning (Saturn Electrostatic Discharges - SED) in the LBA band (30-90 MHz) at high time resolution, the characterization of SED (burst duration, power spectrum, etc.) will deepen our understanding of these events as compared to their terrestrial counterparts (Farrell et al., 2007 and ref. therein). In addition, Jupiter was observed in the HBA band (110-250 MHz) in interferometer mode. The exploitation of these interferometric data leads to the first high resolution images of Jupiter's synchrotron emission from its radiation belts that will reveal the spatial structure of this emission at low frequencies (see also de Pater, 2004). An update on current work will be presented.

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