Results 61 to 70 of about 12,572 (255)

First Observation of Banded Electron Cyclotron Harmonic Waves at Earth's Magnetopause

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract This letter presents the first observation of banded Electron Cyclotron Harmonic (ECH) waves by Magnetospheric Multiscale (MMS) satellites near the Earth's subsolar magnetopause. The observation shows the fundamental mode (n=1 $n=1$) and its higher harmonics (n=2 $n=2$–6), each with distinct lower and upper bands separated by a spectral gap at
Shubhangi Lagad, Amar Kakad, Bharati Kakad, Peter H. Yoon   +3 more
wiley   +1 more source

Global Morphology of Chorus Waves in the Outer Radiation Belt and the Effect of Geomagnetic Activity and fpe ${f}_{pe}$/fce ${f}_{ce}$

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract Whistler‐mode chorus waves play a key role in driving radiation belt dynamics by enabling both acceleration of electrons to relativistic energies as well as their loss into the atmosphere via pitch‐angle scattering. The ratio between the electron plasma frequency (fpe ${f}_{pe}$) and the electron gyrofrequency (fce ${f}_{ce}$) significantly ...
K. A. Bunting, N. P. Meredith, J. Bortnik, Q. Ma, R. Matsuura, X.‐C. Shen   +5 more
wiley   +1 more source

Investigating the Occurrence of Magnetic Reconnection at Jupiter's Dawn Magnetopause During the Juno Era

Geophysical Research Letters, 2022
In this study, observations from the Jovian auroral distributions experiment, Jupiter energetic particle detector instrument, and Magnetic field investigation instruments on Juno are used to identify signatures of magnetic reconnection at Jupiter's dawn ...
J. Montgomery, R. W. Ebert, G. Clark, S. A. Fuselier, F. Allegrini, F. Bagenal, S. J. Bolton, G. A. DiBraccio, R. J. Wilson   +8 more
doaj   +1 more source

Bifurcated Current Sheet Observed on the Boundary of Kelvin-Helmholtz Vortices

Frontiers in Astronomy and Space Sciences, 2021
On May 5, 2017 MMS observed a bifurcated current sheet at the boundary of Kelvin-Helmholtz vortices (KHVs) developed on the dawnside tailward magnetopause. We use the event to enhance our understanding of the formation and structure of asymmetric current
K-J. Hwang, K. Dokgo, E. Choi, J. L. Burch, D. G. Sibeck, B. L. Giles, C. Norgren, T. K. M. Nakamura, T. K. M. Nakamura, D. B. Graham, Y. Khotyaintsev, Q. Q. Shi, D. J. Gershman, C. J. Pollock, R. E. Ergun, R. B. Torbert, C. T. Russell, R. J. Strangeway   +17 more
doaj   +1 more source

Asymmetries observed in Saturn's magnetopause geometry [PDF]

Geophysical Research Letters, 2015
AbstractFor over 10 years, the Cassini spacecraft has patrolled Saturn's magnetosphere and observed its magnetopause boundary over a wide range of prevailing solar wind and interior plasma conditions. We now have data that enable us to resolve a significant dawn‐dusk asymmetry and find that the magnetosphere extends farther from the planet on the ...
N. M. Pilkington, N. Achilleos, C. S. Arridge, P. Guio, A. Masters, L. C. Ray, N. Sergis, M. F. Thomsen, A. J. Coates, M. K. Dougherty   +9 more
openaire   +6 more sources

Mass Loading the Earth's Dayside Magnetopause Boundary Layer and Its Effect on Magnetic Reconnection

Geophysical Research Letters, 2019
When the interplanetary magnetic field is northward for a period of time, O+ from the high‐latitude ionosphere escapes along reconnected magnetic field lines into the dayside magnetopause boundary layer.
S. Fuselier, K. Trattner, S. Petrinec, M. Denton, S. Toledo‐Redondo, M. André, N. Aunai, C. Chappell, A. Glocer, S. Haaland, M. Hesse, L. Kistler, B. Lavraud, W. Li, T. Moore, D. Graham, L. Alm, P. Tenfjord, J. Dargent, S. Vines, K. Nykyri, J. Burch, R. Strangeway   +22 more
semanticscholar   +1 more source

On the origin of the crescent‐shaped distributions observed by MMS at the magnetopause [PDF]

, 2017
MMS observations recently confirmed that crescent‐shaped electron velocity distributions in the plane perpendicular to the magnetic field occur in the electron diffusion region near reconnection sites at Earth's magnetopause.
G. Lapenta, J. Berchem, Meng Zhou, R. J. Walker, M. El‐Alaoui, M. Goldstein, W. Paterson, B. Giles, C. Pollock, C. Russell, R. Strangeway, R. Ergun, Y. Khotyaintsev, R. Torbert, J. Burch   +14 more
semanticscholar   +1 more source

Reconstructing Magnetotail Reconnection Events Using Data Mining is Feasible and Repeatable

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract Recently, Stephens et al. (2023), https://doi.org/10.1029/2022ja031066 utilized a data mining (DM) algorithm, applied to 26 years of magnetospheric magnetometer observations coupled with a flexible formulation of the magnetospheric magnetic field, to reconstruct the global configuration of the magnetotail when the Magnetospheric MultiScale ...
G. K. Stephens, R. S. Weigel, M. I. Sitnov, N. A. Tsyganenko   +3 more
wiley   +1 more source

Kelvin-Helmholtz Instability Associated With Reconnection and Ultra Low Frequency Waves at the Ground: A Case Study

Frontiers in Physics, 2021
The Kelvin-Helmholtz instability (KHI) and its effects relating to the transfer of energy and mass from the solar wind into the magnetosphere remain an important focus of magnetospheric physics.
E. A. Kronberg, J. Gorman, J. Gorman, J. Gorman, K. Nykyri, A. G. Smirnov, A. G. Smirnov, A. G. Smirnov, J. W. Gjerloev, J. W. Gjerloev, E. E. Grigorenko, E. E. Grigorenko, L. V. Kozak, L. V. Kozak, X. Ma, K. J. Trattner, M. Friel   +16 more
doaj   +1 more source

BepiColombo at Mercury: Three Flybys, Three Magnetospheres

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract We examine the first three BepiColombo Mercury flybys Using data from the Miniature Ion Precipitation Analyzer (MIPA), an ion mass analyzer in the Search for Exospheric Refilling and Natural Abundances package on the Mercury Planetary Orbiter designed to study magnetospheric dynamics.
Hayley N. Williamson, Stas Barabash, Hans Nilsson, Martin Wieser, Jim M. Raines, Anna Milillo, Ali Varsani, Alessandro Aronica, Elisabetta DeAngelis, Yoshifumi Futaana, Daniel Heyner, Adrian Kazakov, Stefano Livi, Stefano Orsini, Kristin Pump, Daniel Schmid, Manabu Shimoyama   +16 more
wiley   +1 more source