Journal article
Wave Phenomena and Beam-Plasma Interactions at the Magnetopause Reconnection Region
Journal of Geophysical Research - Space Physics, Vol.123(2), pp.1118-1133
2018
DOI: 10.1002/2017JA024789
PMID: 29938153
Abstract
This paper reports on Magnetospheric Multiscale observations of whistler mode chorus and higher-frequency electrostatic waves near and within a reconnection diffusion region on 23 November 2016. The diffusion region is bounded by crescent-shaped electron distributions and associated dissipation just upstream of the X-line and by magnetic field-aligned currents and electric fields leading to dissipation near the electron stagnation point. Measurements were made southward of the X-line as determined by southward directed ion and electron jets. We show that electrostatic wave generation is due to magnetosheath electron beams formed by the electron jets as they interact with a cold background plasma and more energetic population of magnetospheric electrons. On the magnetosphere side of the X-line the electron beams are accompanied by a strong perpendicular electron temperature anisotropy, which is shown to be the source of an observed rising-tone whistler mode chorus event. We show that the apex of the chorus event and the onset of electrostatic waves coincide with the opening of magnetic field lines at the electron stagnation point.
Details
- Title: Subtitle
- Wave Phenomena and Beam-Plasma Interactions at the Magnetopause Reconnection Region
- Creators
- J. L Burch - Southwest Research InstituteS Wang - University of Maryland, College ParkA. N Jaynes - University of IowaJ. M Webster - Rice UniversityK. -J Hwang - Southwest Research InstituteK. J Genestreti - Austrian Academy of SciencesR. B Torbert - University of New HampshireB. L Giles - Goddard Space Flight CenterS. A Fuselier - Southwest Research InstituteJ. C Dorelli - Goddard Space Flight CenterA. C Rager - Catholic University of AmericaT. D Phan - University of California, BerkeleyR. C Allen - Johns Hopkins UniversityL. -J Chen - University of Maryland, College ParkO Le Contel - Université Paris-SudC. T Russell - University of California, Los AngelesR. J Strangeway - University of California, Los AngelesR. E Ergun - University of Colorado BoulderP. -A Lindqvist - KTH Royal Institute of TechnologyDaniel B Graham - Swedish Institute of Space PhysicsF. D Wilder - University of Colorado BoulderJ Goldstein - Southwest Research Institute
- Resource Type
- Journal article
- Publication Details
- Journal of Geophysical Research - Space Physics, Vol.123(2), pp.1118-1133
- DOI
- 10.1002/2017JA024789
- PMID
- 29938153
- ISSN
- 2169-9402
- eISSN
- 2169-9402
- Grant note
- DOI: 10.13039/100000104, name: National Aeronautics and Space Administration, award: NNG04EB99C
- Language
- English
- Date published
- 2018
- Academic Unit
- Physics and Astronomy; University College Courses
- Record Identifier
- 9984199936302771
Metrics
12 Record Views