Journal article
A pre-shock event at Jupiter on 30 January 2001
Planetary and space science, Vol.54(2), pp.200-211
02/01/2006
DOI: 10.1016/j.pss.2005.10.011
Abstract
In this paper we analyze a pre-shock event that we observed in the foot region of the quasi-parallel bow shock (BS) that the Cassini spacecraft crossed on 30 January 2001, at about 1030
UT. Before crossing the BS, the incoming solar wind first decelerated, and then the bulk velocity both of the proton and
α components increased, the flow accelerated and decelerated, heated and cooled several times. We characterize the plasma in the foot using the data measured by the magnetometer, the radio and plasma wave science (RPWS) instrument, and the Cassini plasma spectrometer (CAPS) being carried onboard the Cassini spacecraft, and analyze the observations. We argue that the velocity and temperature changes can be caused by firehose instabilities excited by ions reflected from the shock. We investigate another possibility, shocklet formation, to account for the observed features, but conclude that this explanation seems to be less likely. In the foot we also identified both backstreaming electrons and ions and electrostatic waves in the 100–1000
Hz range very likely excited by the backstreaming electrons.
Details
- Title: Subtitle
- A pre-shock event at Jupiter on 30 January 2001
- Creators
- Karoly Szego - Institute for Particle and Nuclear PhysicsDavid T. Young - Southwest Research InstituteThorsten Bagdonat - Technische Universität BraunschweigBruce Barraclough - Los Alamos National LaboratoryJean-Jacques Berthelier - Centre d’Étude des Environnements Terrestre et Planetaires, IPSL, FranceAndrew J. Coates - University College LondonFrank J. Crary - Southwest Research InstituteMichele K. Dougherty - Imperial College LondonGeza Erdos - Institute for Particle and Nuclear PhysicsDonald A. Gurnett - University of IowaWilliam S. Kurth - University of IowaAndrea Opitz - Institute for Particle and Nuclear PhysicsAbi Rymer - University College LondonMichelle F. Thomsen - Los Alamos National Laboratory
- Resource Type
- Journal article
- Publication Details
- Planetary and space science, Vol.54(2), pp.200-211
- Publisher
- Elsevier Ltd
- DOI
- 10.1016/j.pss.2005.10.011
- ISSN
- 0032-0633
- eISSN
- 1873-5088
- Language
- English
- Date published
- 02/01/2006
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455285702771
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