Results 71 to 80 of about 637,520 (196)

Saturn's Auroral Dusk Sector Magnetosphere‐Ionosphere Coupling During Cassini's Proximal Orbits

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract The final twenty‐two low‐altitude passes of the Cassini spacecraft enabled the determination of Saturn's field‐aligned currents (FACs) from magnetometer measurements at lower altitudes than previously achieved. We investigate southern dusk‐side FAC behavior with four objectives: how in situ MAG measurements compare to the highly variable ...
S. W. Farr, S. V. Badman, L. C. Ray, G. Provan, J. Kinrade, L. S. Clare   +5 more
wiley   +1 more source

The Electromagnetic Ion Cyclotron Instability Affected by the Temperature Anisotropic Electrons in the Inner Magnetosphere

Geophysical Research Letters, 2023
Electromagnetic ion cyclotron (EMIC) instabilities in the inner magnetosphere are investigated with considering the effect of temperature anisotropic electrons.
Zhiqiang Wang, Lingwei Zhang, Jiacheng Zhong   +2 more
doaj   +1 more source

Modeling Kinetic Reconnection Onset in Global Magnetospheric Simulations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract We investigate the onset of magnetic reconnection in Earth's magnetotail using a coupled magnetohydrodynamic with embedded particle‐in‐cell (MHD‐EPIC) model, which self‐consistently links global magnetospheric dynamics to electron‐scale kinetic processes. Unlike standalone kinetic simulations with idealized boundary conditions, reconnection in
Talha Arshad, Yuxi Chen, Gabor Toth
wiley   +1 more source

The magnetosphere under weak solar wind forcing [PDF]

, 2007
The Earth's magnetosphere was very strongly disturbed during the passage of the strong shock and the following interacting ejecta on 21–25 October 2001. These disturbances included two intense storms (Dst*≈−250 and −180 nT, respectively).
Rich, F. J., S. W. H. Cowley, Jordanova, V. K., R. B. Torbert, S. W. H. Cowley (7590302), A. Sharma, Y. Miyoshi (7592057), Adrian Grocott (7590026), Farrugia, Charlie J., V. K. Jordanova (7592063), C. J. Farrugia, A. Grocott, Sharma, A., V. K. Jordanova, C. J. Farrugia (7592051), Farrugia, C. J., P. E. Sandholt (7592054), R. B. Torbert (7592066), Grocott, A., Miyoshi, Y., P. E. Sandholt, Torbert, Roy B., Sandholt, P. E., Y. Miyoshi, Cowley, S. W. H., A. Sharma (5739), F. J. Rich, Torbert, R. B., F. J. Rich (7592060)   +28 more
core   +4 more sources

Global Energy Circulation During a Solar Wind Density Pulse

Space Weather
We study the propagation and impacts of a strong density pulse through the magnetosphere during 11:40–12:00 UT near the peak of a geomagnetic storm on 3 February 2022. Using the Space Weather Modeling Framework Geospace global simulation, we show how the
Tuija Pulkkinen, Matti Ala‐Lahti, Austin Brenner, Gábor Tóth, Daniel Welling, Timothy Keebler   +5 more
doaj   +1 more source

Improved Boundary Conditions for Coupled Geospace Models: An Application in Modeling Spacecraft Surface Charging Environment

Space Weather, 2022
Spacecraft surface charging in the inner magnetosphere often occurs in the pre‐midnight to the dawn sector when electron fluxes of tens of keV increase.
Yiqun Yu, Shengjun Su, Jinbin Cao, Vania K. Jordanova, Michael H. Denton   +4 more
doaj   +1 more source

Neural Network Imputation of the Pitch‐Angle‐Resolved Medium‐Energy Electron Flux Data in LEO

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Pitch‐angle‐resolved electron flux data are crucial for investigating variations in electron flux within the magnetosphere and the underlying mechanisms, such as radial diffusion and wave‐particle interactions. The Medium‐Energy Electron Detector (MEED) onboard the Fengyun‐3E (FY‐3E) satellite in Low Earth Orbit (LEO) provides 18‐directional ...
Jia‐Li Chen, Hong Zou, Yu‐Guang Ye, Jia‐Chen Sun, Tian‐Hao Li   +4 more
wiley   +1 more source

Michigan Geospace Model With Ensemble Forecasting and Particle Filtering: Modeling the May 2024 Extreme Storm

Space Weather, Volume 24, Issue 9, September 2026.
Abstract This paper introduces an updated version of the University of Michigan Geospace model. The Geospace model has been used for operational forecasting at the Space Weather Modeling Center of the National Oceanic and Atmospheric Agency since 2016 with regular updates. The current operational version, Geospace V2, was launched in 2021 and is driven
Gábor Tóth, Pauline Dredger, Tuija Pulkkinen   +2 more
wiley   +1 more source

Bulk plasma properties at geosynchronous orbit. [PDF]

, 2005
We present a comprehensive study of plasma properties at geosynchronous orbit for electron and ion energies between ∼1 eV and ∼45 keV, between 1990 and 2001.
Liemohn, M. W., Zhang, J. C., Denton, Michael H., Korth, H., Thomsen, M. F., Lynch, S.   +5 more
core   +3 more sources

Investigating SAPS Channels and Related Phenomena Observed Under Weak Magnetic Conditions in the Midday Subauroral Geospace

Astronomy
Subauroral geospace is a dynamic region. Its various features include Subauroral Polarization Streams (SAPS), hot and cold zones, and storm enhanced densities (SED).
Ildiko Horvath, Brian C. Lovell
doaj   +1 more source