A review of the theory of 3‐D Alfvén (field line) resonances

T Elsden, A Wright, A Degeling - Frontiers in Astronomy and Space …, 2022 - frontiersin.org
This review article aims to summarise recent developments in Alfvén resonance theory, with
a focus on applications to magnetospheric ultra-low frequency (ULF) waves, though many of …

Magnetopause ripples going against the flow form azimuthally stationary surface waves

MO Archer, MD Hartinger, F Plaschke… - Nature …, 2021 - nature.com
Surface waves process the turbulent disturbances which drive dynamics in many space,
astrophysical and laboratory plasma systems, with the outer boundary of Earth's …

Simulations of MHD wave propagation and coupling in a 3‐D magnetosphere

AN Wright, T Elsden - Journal of Geophysical Research: Space …, 2020 - Wiley Online Library
A novel simulation grid is devised that is optimized for studying magnetohydrodynamic
(MHD) wave coupling and phase mixing in a dipole‐like magnetic field. The model also …

How a realistic magnetosphere alters the polarizations of surface, fast magnetosonic, and Alfvén waves

MO Archer, DJ Southwood… - Journal of …, 2022 - Wiley Online Library
Abstract System‐scale magnetohydrodynamic (MHD) waves within Earth's magnetosphere
are often understood theoretically using box models. While these have been highly …

The roles of the magnetopause and plasmapause in storm‐time ULF wave power enhancements

JK Sandhu, IJ Rae, FA Staples… - Journal of …, 2021 - Wiley Online Library
Ultra low frequency (ULF) waves play a crucial role in transporting and coupling energy
within the magnetosphere. During geomagnetic storms, dayside magnetospheric ULF wave …

A radial standing Pc5‐6 wave and its energy coupling with field line resonance within the dusk‐sector magnetosphere

YJ Zhou, F He, XX Zhang, MO Archer… - Journal of …, 2023 - Wiley Online Library
Global ultra‐low frequency (ULF) oscillations are believed to play a significant role in the
mass, energy, and momentum transport within the Earth's magnetosphere. In this letter, we …

Evolution of High‐m Poloidal Alfvén Waves in a Dipole Magnetic Field

T Elsden, A Wright - Journal of Geophysical Research: Space …, 2020 - Wiley Online Library
We investigate how initially high‐m, poloidal Alfvén waves evolve using a numerical model
solving the ideal, cold, linear magnetohydrodynamic (MHD) equations in a 2‐D dipole …

Polarization of magnetospheric ULF waves excited by an interplanetary shock on 27 February 2014

K Takahashi, T Elsden, AN Wright… - Journal of Geophysical …, 2023 - Wiley Online Library
Many previous studies have reported that magnetospheric ultralow frequency waves excited
by interplanetary shocks exhibit a strong toroidal component, corresponding to azimuthal …

Properties of Magnetohydrodynamic normal modes in the Earth's Magnetosphere

MD Hartinger, T Elsden, MO Archer… - Journal of …, 2023 - Wiley Online Library
The Earth's magnetosphere supports a variety of Magnetohydrodynamic (MHD) normal
modes with Ultra Low Frequencies (ULF) including standing Alfvén waves and …

Alfven waves in the Earth's magnetosphere

AN Wright, MD Hartinger, K Takahashi… - Alfvén waves across …, 2024 - Wiley Online Library
The environment surrounding the Earth that is dominated by the terrestrial magnetic field is
called the magnetosphere. It comprises a highly structured magnetic field and plasma …