Results 71 to 80 of about 12,572 (255)

Prediction of Axial Asymmetry in Jovian Magnetopause Reconnection

Geophysical Research Letters, 2023
We show the possible existence of a significant axial asymmetry in the reconnection separator at the Jovian magnetopause using first‐principle, physics‐based global simulations. Under eastward interplanetary magnetic field (IMF) conditions near Jupiter's
Junjie Chen, Binzheng Zhang, Dong Lin, Peter A. Delamere, Zhonghua Yao, Oliver Brambles, Kareem A. Sorathia, Viacheslav G. Merkin, John G. Lyon   +8 more
doaj   +1 more source

Efficiency of Electromagnetic Energy Transfer From Solar Wind to Ionosphere Through Magnetospheric Ultra‐Low Frequency Waves

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Ultra‐low frequency (ULF) waves are a ubiquitous carrier of energy in geospace. However, their efficiency in transferring solar wind energy into the upper atmosphere remains a fundamental and not well‐understood question. This is due to their global presence, which cannot be fully quantified by spatially limited observations, and the need for ...
Dong Lin, Michael Hartinger, William Lotko, Wenbin Wang, Xueling Shi, Kareem Sorathia, Bharat Kunduri, Viacheslav Merkin, Kevin Pham, Michael Wiltberger   +9 more
wiley   +1 more source

Statistical Estimate of the Magnetopause Reconnection Rate as a Function of the Interplanetary Magnetic Field Clock Angle

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract The magnetic reconnection rate at the magnetopause is crucial for solar wind and magnetosphere coupling. However, direct measurement is challenging due to inherent uncertainties and limited electron diffusion region statistics, hindering understanding of the guide field's influence on the normalized reconnection rate.
B. Michotte de Welle, N. Aunai, B. Lavraud, V. Génot, G. Nguyen, A. Ghisalberti, A. Jeandet, D. Sibeck, H. Connor   +8 more
wiley   +1 more source

Spatial Distributions of Energetic Electrons and Energetic Ions in the Tail Reconnection Region: Cluster Observations and PIC Simulations

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract High‐energy particles are prevalent in space, and magnetic reconnection is one of the physical processes responsible for their generation. The heating and acceleration of ions and electrons typically occur respectively in the ion diffusion region and the electron diffusion region.
S. Y. Huang, H. W. Zhan, Q. Y. Xiong, Z. G. Yuan, K. Jiang, Y. T. Tang, H. Bai   +6 more
wiley   +1 more source

Multi‐Species Energy‐Banded Ions in the Ionosphere During the 21 January 2005 Magnetic Storm: Low‐Altitude Edge of the Warm Plasma Cloak

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract During the 21–22 January 2005 magnetic storm, the FAST satellite observed warm (< few keV) ions in discrete energy bands on the dayside at ∼3,000 km altitude for more than 6.5 hr. We suggest that the ionospheric energy‐banded ions represent the low‐altitude edge of the warm plasma cloak observed simultaneously by magnetospheric satellites ...
J. U. Kozyra, M. W. Liemohn, C. A. Cattell, J. Dombeck, C. P. Escoubet, M. Thomsen, G. Lu, D. J. Knipp, L. J. Paxton, R. M. Skoug, H. A. Elliott, A. J. Davis, L. Rastaetter, D. DeZeeuw, C. Colpitts   +14 more
wiley   +1 more source

Evolution of Ionospheric Ion Upflow Flux During the April 2023 Geomagnetic Storm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract We study the impact of the evolving magnetosphere‐ionosphere‐thermosphere system on upward ion fluxes during the 23–24 April 2023 geomagnetic storm. This storm has a “double‐dip” structure where two southward IMF Bz ${\mathrm{B}}_{z}$ periods cause two dips in the SYM‐H index.
Grace Kwon, Shasha Zou, Marc Hairston, Hu Sun, Maria Smirnova   +4 more
wiley   +1 more source

The Origin of Non‐Gyrotropic Distribution Functions in Compressed Current Sheets

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Non‐gyrotropic distribution functions are often observed in thin current sheets prior to magnetic reconnection. This study uses NASA's Magnetospheric Multiscale mission data to confirm a novel source of agyrotropy in compressed current sheets and highlights its significance in reconnection.
Ami M. DuBois, Chris Crabtree, Emily Lichko, Gurudas Ganguli   +3 more
wiley   +1 more source

Role of Large‐Scale Traveling Ionospheric Disturbances in the Positive Storm Phase Observed by the Millstone Hill Radar and GNSS TEC Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract A moderate geomagnetic storm was driven by high‐speed solar wind stream on 14 March 2016. We show that large‐scale traveling ionospheric disturbances (LSTIDs) played a significant role in producing the ionospheric storm positive phase at mid‐latitudes in the North American sector.
G. P. Geethakumari, A. T. Aikio, L. Cai, H. Vanhamäki, I. I. Virtanen, A. Coster, A. Maute, A. Marchaudon, P.‐L. Blelly   +8 more
wiley   +1 more source

Outer Radiation Belt Dynamics During the October 2012 Storm Revisited: Rapid Inward Radial Transport From a Dynamic Outer Boundary

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Earth's outer radiation belt electron flux is highly variable and can be enhanced by over an order of magnitude over timescales less than one day, as observed during the October 2012 storm. Previous studies of this storm (e.g., Reeves et al., 2013, https://doi.org/10.1126/science.1237743) have invoked local acceleration to explain this ...
L. G. Ozeke, I. R. Mann, L. Olifer, S. K. Morley, H. E. Spence   +4 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