Chen L., J. Sun, Q. Lu, X. Wang, X. Gao, D. Wang, S. Wang, (2018), Two-Dimensional Particle-in-Cell Simulation of Magnetosonic Wave Excitation in a Dipole Magnetic Field, Geophysical Research Letters, 45, 8712-8720, doi:10.1029/2018GL079067
Abstract
Abstract The excitation of magnetosonic waves in the meridian plane of a rescaled dipole magnetic field is investigated, for the first time, using a general curvilinear particle-in-cell simulation. Our simulation demonstrates that the magnetosonic waves are excited near the equatorial plane by tenuous ring distribution protons. The waves propagate nearly perpendicularly to the background magnetic field along both radially inward and outward directions. Different speeds of inward and outward propagation result in the asymmetrical distribution about the source region. The waves are accompanied by energization of both cool protons and electrons near the wave source region. The cool protons are heated perpendicularly, while the cool electrons can be heated in the parallel direction and also experience enhanced perpendicular drift at the presence of intense wave power. The implications of simulation results to the observations of magnetosonic waves and related particle heating in the inner magnetosphere are also discussed.Authors (sorted by name)
Chen Gao Lu Sun WangJournal / Conference
Geophysical Research LettersAcknowledgments
This research was supported by the NSFC grants 41604128, 41631071, 41331067, 41421063, and 41574139 and Key Research Program of Frontier Sciences, CAS (QYZDJ‐SSW‐DQC010). L. C. acknowledges the support of NSF‐GEM grant AGS‐1705079, grant 32955099, and AFOSR grant FA9550‐16‐1‐0344. The simulation data are available via the link https://pan.baidu.com/s/1hjV5hCxKpOxbcOr-VtpZLg. No observational data are used.Grants
AGS‐1705079 FA9550‐16‐1‐0344Bibtex
@article{doi:10.1029/2018GL079067,
author = {Chen, Lunjin and Sun, Jicheng and Lu, Quanming and Wang, Xueyi and Gao, Xinliang and Wang, Dedong and Wang, Shui},
title = {Two-Dimensional Particle-in-Cell Simulation of Magnetosonic Wave Excitation in a Dipole Magnetic Field},
journal = {Geophysical Research Letters},
volume = {45},
number = {17},
pages = {8712-8720},
keywords = {magnetosonic waves, particle-in-cell simulation, two dimensional, proton ring, wave particle interaction},
doi = {10.1029/2018GL079067},
url = {https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018GL079067},
eprint = {https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2018GL079067},
abstract = {Abstract The excitation of magnetosonic waves in the meridian plane of a rescaled dipole magnetic field is investigated, for the first time, using a general curvilinear particle-in-cell simulation. Our simulation demonstrates that the magnetosonic waves are excited near the equatorial plane by tenuous ring distribution protons. The waves propagate nearly perpendicularly to the background magnetic field along both radially inward and outward directions. Different speeds of inward and outward propagation result in the asymmetrical distribution about the source region. The waves are accompanied by energization of both cool protons and electrons near the wave source region. The cool protons are heated perpendicularly, while the cool electrons can be heated in the parallel direction and also experience enhanced perpendicular drift at the presence of intense wave power. The implications of simulation results to the observations of magnetosonic waves and related particle heating in the inner magnetosphere are also discussed.},
year = {2018}
}