Kinetic instabilities in the lunar wake: ARTEMIS observations

J. B Tao; R. E Ergun; D. L Newman; J. S Halekas; L Andersson; V Angelopoulos; J. W Bonnell; J. P McFadden; C. M Cully; H.-U Auster; K.-H Glassmeier; D. E Larson; W Baumjohann; M. V Goldman

doi:10.1029/2011JA017364

Back

Kinetic instabilities in the lunar wake: ARTEMIS observations

Journal article

Open access

Peer reviewed

Kinetic instabilities in the lunar wake: ARTEMIS observations

J. B Tao, R. E Ergun, D. L Newman, J. S Halekas, L Andersson, V Angelopoulos, J. W Bonnell, J. P McFadden, C. M Cully, H.-U Auster, …

Journal of Geophysical Research: Space Physics, Vol.117(A3), A03106

03/2012

DOI: 10.1029/2011JA017364

Files and links (1)

url

https://doi.org/10.1029/2011JA017364View

Published (Version of record) Open Access

Abstract

[1] The Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon's Interaction with the Sun (ARTEMIS) mission is a new two-probe lunar mission derived from the Time History of Events and Macroscale Interactions during Substorms (THEMIS) mission. On 13 February 2010, one of the two probes, ARTEMIS P1 (formerly THEMIS-B), made the first lunar wake flyby of the mission. We present detailed analysis of the electrostatic waves observed on the outbound side of the flyby that were associated with electron beams. Halekas et al. (2011) derived a net potential across the lunar wake from observations and suggested that the net potential generated the observed electron beams and the electron beams in turn excited the observed electrostatic waves due to kinetic instabilities. The wavelengths and velocities of the electrostatic waves are estimated, using high-resolution electric field instrument data with cross-spectrum analysis and cross-correlation analysis. In general, the estimated wavelengths vary from a few hundred meters to a couple of thousand meters. The estimated phase velocities are on the order of 1000 km s−1. In addition, we perform 1-D Vlasov simulations to help identify the mode of the observed electrostatic waves. We conclude that the observed electrostatic waves are likely on the electron beam mode branch.

electron beam mode

lunar wake

Details

Title: Subtitle: Kinetic instabilities in the lunar wake: ARTEMIS observations
Creators: J. B Tao - University of Colorado Boulder
R. E Ergun - University of Colorado Boulder
D. L Newman - University of Colorado Boulder
J. S Halekas - University of California, Berkeley
L Andersson - University of Colorado Boulder
V Angelopoulos - University of California, Los Angeles
J. W Bonnell - University of California, Berkeley
J. P McFadden - University of California, Berkeley
C. M Cully - Swedish Institute of Space Physics
H.-U Auster - Technische Universität Braunschweig
K.-H Glassmeier - Technische Universität Braunschweig
D. E Larson - University of California, Berkeley
W Baumjohann - Austrian Academy of Sciences
M. V Goldman - University of Colorado Boulder
Resource Type: Journal article
Publication Details: Journal of Geophysical Research: Space Physics, Vol.117(A3), A03106
DOI: 10.1029/2011JA017364
ISSN: 0148-0227
eISSN: 2156-2202
Publisher: Blackwell Publishing Ltd
Number of pages: 10
Language: English
Date published: 03/2012
Academic Unit: Physics and Astronomy
Record Identifier: 9984199787402771

Metrics

15 Record Views

37 Times Cited - Web of Science