Results 81 to 90 of about 16,773 (267)

MMS observations of electron-scale filamentary currents in the reconnection exhaust and near the X line [PDF]

, 2016
© 2016. American Geophysical Union. All Rights Reserved.We report Magnetospheric Multiscale observations of macroscopic and electron-scale current layers in asymmetric reconnection.
Avanov, LA, Burch, JL, Cassak, PA, Chen, LJ, Daughton, W, Dorelli, JC, Drake, JF, Eastwood, JP, Ergun, RE, Fujimoto, M, Gershman, DJ, Giles, BL, Gosling, JT, Khotyaintsev, Y, Lavraud, B, Lindqvist, PA, Moore, TE, Mozer, FS, Oka, M, Paterson, W, Phan, TD, Pollock, C, Russell, CT, Saito, Y, Shay, MA, Strangeway, RJ, Torbert, RB, Wang, S, Wilder, FD, Øieroset, M   +29 more
core   +3 more sources

Evidence for a Localized Burst of Relativistic Electrons Produced in Earth's Plasma Sheet During a Substorm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Earth's magnetotail and its plasma sheet are highly dynamic, influenced by both the solar wind and the inner magnetosphere. Periodically, energy is explosively released in the magnetotail during substorms. However, the extent to which electrons are accelerated in the magnetotail remains an open question, with recent observations revealing ...
M. Shumko, D. L. Turner, A. Y. Ukhorskiy, I. J. Cohen, G. K. Stephens, A. Artemyev, X. Zhang, C. Wilkins, E. Tsai, C. Gabrielse, S. Raptis, M. Sitnov, V. Angelopoulos   +12 more
wiley   +1 more source

ULF Wave Modulation of Energetic Electron Precipitation Caused by the Self‐Limiting of Space Radiation: May 2024 Superstorm Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The May 2024 geomagnetic superstorm provided the opportunity to explore how strong wave‐particle interactions affect energetic electron precipitation under intense driving. Using coordinated measurements from a balloon‐borne Timepix‐based X‐ray detector, ground‐based riometers and magnetometers, and Arase satellite observations, we identified ...
L. Olifer, D. Zhou, M. Patel, I. R. Mann, M. K. Hudson, A. W. Degeling, C. O. Heinke, G. R. Sivakoff, A. Kale, S. Kasahara, S. Yokota, K. Keika, T. Hori, T. Mitani, T. Takashima, Y. Kasahara, S. Matsuda, A. Shinbori, A. Matsuoka, M. Teramoto, K. Yamamoto, I. Shinohara, Y. Miyoshi   +22 more
wiley   +1 more source

The Shape of Strongly Disturbed Dayside Magnetopause

Terrestrial, Atmospheric and Oceanic Sciences, 2013
During strong geomagnetic disturbances, the Earth¡¦s magnetosphere exhibits unusual and nonlinear interaction with the incident flow of magnetized solar wind plasma. Global Magneto-hydro-dynamic (MHD) modeling of the magnetosphere predicts that the storm-
Alexei V. Dmitriev Alla V. Suvorova
doaj   +1 more source

Juno Observations of Large‐Scale Azimuthal Fields and Flows in Jupiter's Nightside Magnetosphere: Field‐Aligned Currents, Effective Ionospheric Pedersen Conductivity, and Power to Atmospheric Heating

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Using the methodology of Cowley et al. (https://doi.org/10.1029/2025JA033993), we employ ∼8 years of Juno azimuthal magnetic field data to derive colatitude profiles of Jupiter's nightside (17‐05 hr via midnight) ionospheric equatorward Pedersen current from near the magnetic pole to inner magnetosphere field lines at 18° colatitude, from ...
G. Provan, S. W. H. Cowley, J. D. Nichols, J.‐Z. Wang, R. J. Wilson   +4 more
wiley   +1 more source

Magnetopause Boundary Layers

Journal of geomagnetism and geoelectricity, 1991
The formation of boundary layers inside and outside of the magnetopause discontinuity of the Earth is a consequence of mass and momentum transfer processes through the magnetopause. The existence of these boundary layers is well recognized nowadays. However, the physics related to for instance the transfer of energy through the magnetopause into the ...
openaire   +2 more sources

Joule Heating in the Northern Hemisphere During Geomagnetic Storms Driven by High‐Speed Streams and Coronal Mass Ejections

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract We present a robust method for estimating the auroral Joule heating in the northern hemisphere by combining SuperMAG, SuperDARN and AMPERE data products. This method is applied to 292 storms during 2010–2023. Temporal evolution and spatial distributions of the storm‐time Joule heating are studied using a superposed epoch analysis, with the ...
H. Vanhamäki, M. Pedersen, A. Aikio, C. Waters, J. Gjerloev, L. Cai, M. Myllymaa, B. Kunduri, K. Sterne, S. Vines, B. Anderson   +10 more
wiley   +1 more source

The Structure of Martian Magnetosphere at the Dayside Terminator Region as Observed on MAVEN Spacecraft

, 2018
We analyzed 44 passes of the MAVEN spacecraft through the magnetosphere, arranged by the angle between electric field vector and the projection of spacecraft position radius vector in the YZ plane in MSE coordinate system (${\theta}$ E ). All passes were
DiBraccio, G. A., Dubinin, E. M., Ermakov, V. N., Halekas, J., McFadden, J., Shuvalov, S. D., Vaisberg, O. L., Zelenyi, L. M.   +7 more
core   +1 more source

A Statistical Analysis of the Wave‐Particle Dynamics Near the Kennel‐Petschek Limit

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract This study investigates how electron fluxes and chorus waves behave relative to the Kennel–Petschek (K‐P) flux limit using 7 years of Van Allen Probes observations. We combine spatial statistics of when the K‐P limit is exceeded, energy‐dependent flux–wave relationships, and frequency‐resolved chorus spectra to provide a more comprehensive ...
S. D. Walton, I. Thomas, L. Olifer
wiley   +1 more source

Global Ionospheric TEC Variability: Long‐Term Spectral–Wavelet Analysis and Geomagnetic Storm Event Case Studies

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract This study investigates global ionospheric variability using Global Total Electron Content (GTEC), defined as the spatial average of daily averaged Global Ionospheric Maps derived from the International GNSS Service. The analysis spans from 2010 to 2024, covering Solar Cycle 24 and the rising phase of Solar Cycle 25, and incorporates ...
Ramadane Hamed Linjouom Nsangou, Y. Reuveni   +1 more
wiley   +1 more source