HR: 15:10h
AN: SM13D-06    [Abstracts]
TI: Relation between electromagnetic waves and FTE's
AU: * ROBERT, P
EM: Patrick.Robert@cetp.ipsl.fr
AF: CETP,CNRS/UVSQ/UPMC, CETP, 10-12 av. Europe, Vélizy, F-78140, France
AU: Roux, A
EM: Alain.Roux@cetp.ipsl.fr
AF: CETP,CNRS/UVSQ/UPMC, CETP, 10-12 av. Europe, Vélizy, F-78140, France
AU: Le Contel, O
EM: Olivier.LeContel@cetp.ipsl.fr
AF: CETP,CNRS/UVSQ/UPMC, CETP, 10-12 av. Europe, Vélizy, F-78140, France
AU: Coillot, C
EM: Chistophe.coillot@cetp.ipsl.fr
AF: CETP,CNRS/UVSQ/UPMC, CETP, 10-12 av. Europe, Vélizy, F-78140, France
AU: Bouabdellah, A
EM: Abdel.Bouabdellah@cetp.ipsl.fr
AF: CETP,CNRS/UVSQ/UPMC, CETP, 10-12 av. Europe, Vélizy, F-78140, France
AU: Alison, D
EM: Dominique.Alison@cetp.ipsl.fr
AF: CETP,CNRS/UVSQ/UPMC, CETP, 10-12 av. Europe, Vélizy, F-78140, France
AU: Ruocco, S
EM: Sebastien.Ruocco@cetp.ipsl.fr
AF: CETP,CNRS/UVSQ/UPMC, CETP, 10-12 av. Europe, Vélizy, F-78140, France
AU: Sibeck, D G
EM: David.g.Sibeck@nasa.gov
AF: NASA/GFSC, Greenbelt, MD, USA 20771, Greenbelt, MD 20771, United States
AU: Angelopoulos, V
EM: vassilis@ucla.edu
AF: IGPP, University of California, Los Angeles, Los Angeles, CA 90095, United States
AU: Bonnell, J
EM: jbonnell@ssl.berkeley.edu
AF: SSL, University of California Berkeley, Berkeley, CA 90210, United States
AU: Bonnell, J
EM: jbonnell@ssl.berkeley.edu
AF: IGPP, University of California, Los Angeles, Los Angeles, CA 90095, United States
AU: Carlson, C W
EM: cwc@ssl.berkeley.edu
AF: SSL, University of California Berkeley, Berkeley, CA 90210, United States
AU: Chaston, C C
EM: ccc@ssl.berkeley.edu
AF: SSL, University of California Berkeley, Berkeley, CA 90210, United States
AU: Fadden, J M
EM: mcfadden@ssl.berkeley.edu
AF: SSL, University of California Berkeley, Berkeley, CA 90210, United States
AU: Larson, D
EM: davin@ssl.berkeley.edu
AF: SSL, University of California Berkeley, Berkeley, CA 90210, United States
AU: Ergun, R E
EM: ree@fast.colorado.edu
AF: LASP, University of Colorado, Boulder, CO 80303, United States
AU: Cully, C
EM: cully@colorado.edu
AF: LASP, University of Colorado, Boulder, CO 80303, United States
AU: Glassmeier, K
EM: k-h.glassmeier@tu-bs.de
AF: IGEP, Intitut fur Geophysik und extraterrestrische Physik, Braunschweig, D-38106, Germany
AU: Auster, U
EM: uli.auster@tu-bs.de
AF: IGEP, Intitut fur Geophysik und extraterrestrische Physik, Braunschweig, D-38106, Germany
AU: Russell, C T
EM: ctrussel@igpp.ucla.edu
AF: IGPP, University of California, Los Angeles, Los Angeles, CA 90095, United States
AB: On May 20, 2007, the 5 THEMIS spacecraft passed by a FTE, in the post-noon sector. Spacecraft configuration was particularly interesting since the satellites bracketed the FTE structure, with Thb and Thc on the magnetospheric side, Tha and The on the magnetosheath side, while Thd was close to the magnetopause current layer. The geometry and the general characteristics of this event will be discussed elsewhere by Sibeck et al. Here we look for possible wave-particle interactions. The spacecraft in the magnetosphere observe (i) a bipolar magnetic field signature normal to the nominal magnetopause, (ii) a crater-like variation in the magnetic field strength, (iii) enhanced densities, (iv) enhanced ion flow velocities, (v) intense fluxes of medium energy electrons, and (vi) enhanced magnetic components of the ULF waves. Densities and ion velocities in the core region are comparable to those in the magnetosheath, but electrons are apparently heated/accelerated well above magnetosheath values. Near the magnetopause, and in the magnetosheath, electron heating/acceleration is not limited to the vicinity of the FTE magnetic field signature, but rather extends over a broader region, where it still coincides with ULF waves. Densities and ion flow velocities vary little as the FTE passes the spacecraft in the magnetosheath. However, in conjunction with large amplitude ULF waves, the magnetosheath electrons are heated/accelerated significantly These preliminary observations suggest that electromagnetic waves interact with electrons, inside the FTE, on the magnetospheric side, and in a broader region, in the current layer and magnetosheath side. We will analyse wave characteristics, as well as the shape of the electron distribution function, and investigate possible signatures of wave particle interactions as a potential heating mechanism.
DE: 2720 Energetic particles: trapped
DE: 2724 Magnetopause and boundary layers
DE: 2728 Magnetosheath
DE: 2748 Magnetotail boundary layers
DE: 2778 Ring current
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting