Nanodust detection near 1 AU from spectral analysis of Cassini/Radio and Plasma Wave Science data

P. Schippers; N. Meyer-Vernet; A. Lecacheux; W. S. Kurth; D. G. Mitchell; N. Andre

doi:10.1002/2014GL060566

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Nanodust detection near 1 AU from spectral analysis of Cassini/Radio and Plasma Wave Science data

Journal article

Open access

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Nanodust detection near 1 AU from spectral analysis of Cassini/Radio and Plasma Wave Science data

P. Schippers, N. Meyer-Vernet, A. Lecacheux, W. S. Kurth, D. G. Mitchell and N. Andre

Geophysical research letters, Vol.41(15), pp.5382-5388

08/16/2014

DOI: 10.1002/2014GL060566

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Abstract

Nanodust grains of a few nanometers in size are produced near the Sun by collisional breakup of larger grains and picked up by the magnetized solar wind. They have so far been detected at 1AU by only the two STEREO spacecraft. Here we analyze the spectra measured by the radio and plasma wave instrument onboard Cassini during the cruise phase close to Earth orbit; they exhibit bursty signatures similar to those observed by the same instrument in association with nanodust stream impacts on Cassini near Jupiter. The observed wave level and spectral shape reveal impacts of nanoparticles at about 300km/s, with an average flux compatible with that observed by the radio and plasma wave instrument onboard STEREO and with the interplanetary flux models.

Geology

Geosciences, Multidisciplinary

Physical Sciences

Science & Technology

Details

Title: Subtitle: Nanodust detection near 1 AU from spectral analysis of Cassini/Radio and Plasma Wave Science data
Creators: P. Schippers - Université de Versailles Saint-Quentin-en-Yvelines
N. Meyer-Vernet - Laboratoire d’études spatiales et d’instrumentation en astrophysique
A. Lecacheux - Université de Versailles Saint-Quentin-en-Yvelines
W. S. Kurth - University of Iowa
D. G. Mitchell - Johns Hopkins University Applied Physics Laboratory
N. Andre - Research Institute in Astrophysics and Planetology
Resource Type: Journal article
Publication Details: Geophysical research letters, Vol.41(15), pp.5382-5388
Publisher: Amer Geophysical Union
DOI: 10.1002/2014GL060566
ISSN: 0094-8276
eISSN: 1944-8007
Number of pages: 7
Grant note: CNES (Centre National d'Etudes Spatiales) agency; Centre National D'etudes Spatiales 1415150 / NASA; National Aeronautics & Space Administration (NASA) Jet Propulsion Laboratory; National Aeronautics & Space Administration (NASA)
Language: English
Date published: 08/16/2014
Academic Unit: Physics and Astronomy
Record Identifier: 9984455542602771

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