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MMS Observations of Ion-Scale Magnetic Island in the Magnetosheath Turbulent PlasmaIn this letter, first observations of ion-scale magnetic island from the Magnetospheric Multiscale mission in the magnetosheath turbulent plasma are presented. The magnetic island is characterized by bipolar variation of magnetic fields with magnetic field compression, strong core field, density depletion, and strong currents dominated by the parallel component to the local magnetic field. The estimated size of magnetic island is about 8 di, where di is the ion inertial length. Distinct particle behaviors and wave activities inside and at the edges of the magnetic island are observed: parallel electron beam accompanied with electrostatic solitary waves and strong electromagnetic lower hybrid drift waves inside the magnetic island and bidirectional electron beams, whistler waves, weak electromagnetic lower hybrid drift waves, and strong broadband electrostatic noise at the edges of the magnetic island. Our observations demonstrate that highly dynamical, strong wave activities and electron-scale physics occur within ion-scale magnetic islands in the magnetosheath turbulent plasma..
Document ID
20170003500
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Huang, S. Y. (Wuhan Univ. China)
Sahraoui, F. (Ecole Polytechnique Palaiseau, France)
Retino, A. (Ecole Polytechnique Palaiseau, France)
Contel, O. Le (Ecole Polytechnique Palaiseau, France)
Yuan, Z. G. (Wuhan Univ. China)
Chasapis, A. (Delaware Univ. Newark, DE, United States)
Aunai, N. (Ecole Polytechnique Palaiseau, France)
Breuillard, H. (Ecole Polytechnique Palaiseau, France)
Deng, X. H. (Nanchang Univ. Jiangxi, China)
Zhou, M. (California Univ. Los Angeles, CA, United States)
Pollock, C. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Giles, B. L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Moore, T. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
April 17, 2017
Publication Date
August 14, 2016
Publication Information
Publication: Geophysical Research Letters
Volume: 43
Issue: 15
ISSN: 0094-8276
Subject Category
General
Report/Patent Number
GSFC-E-DAA-TN41034
Distribution Limits
Public
Copyright
Other