Results 61 to 70 of about 5,952,631 (141)

Cluster Observations of Extreme Energetic Electron Acceleration Event in the Earth's Magnetotail

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Energetic electrons in the Earth's magnetotail play a crucial role in space weather. Although many studies have identified the basic processes of energetic electron acceleration, the conditions that lead to the most extreme acceleration events remain unclear.
Chao Gai, Andris Vaivads, Maria Chloi Katrougkalou, Anita Kullen, Tomas Karlsson, Elena A. Kronberg   +5 more
wiley   +1 more source

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

CLASSIFICATION ALGORITHM FOR MHD WAVELET-SKELETON SPECTRAL IMAGES OF GEOEFFECTIVE PLASMA FLOWS IN THE SOLAR WIND

Вестник Мининского университета, 2017
The paper presents a new method for the identification of plasma flows in the solar wind by self-learning classification neural network using their spectral features in the range of magnetic hydrodynamics.
N. A. Barkhatov, S. E. Revunov, A. B. Vinogradov   +2 more
doaj   +2 more sources

Examining the Radial Evolution of a Corotating Interaction Region Observed at STEREO-A and MAVEN

The Astrophysical Journal
Corotating interaction regions (CIRs) are long-lasting solar wind structures that persist over multiple solar rotations. These structures accelerate particles throughout the heliosphere and can impart significant energy onto planetary ionospheres and ...
Sarah A. Henderson, Rachael J. Filwett, Christina O. Lee, Rebecca Jolitz, Robert C. Allen, Maher A. Dayeh, Ali Rahmati, Davin Larson, Jasper S. Halekas, Jacob R. Gruesbeck, Antoinette Galvin, Hanying Wei, Bernd Heber   +12 more
doaj   +1 more source

Superposed Epoch Analysis of Extreme Geomagnetic Disturbances at Auroral Zone Latitudes Over a Solar Cycle

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Intense and rapidly changing electrical currents in near‐Earth space produce geomagnetic disturbances (GMDs) with large magnetic field rates of change (dB/dt) and in turn large geomagnetically induced currents (GICs) in nearby power lines and pipelines. This study builds on the work of Engebretson, Yang, et al.
Mark J. Engebretson, Giulia F. Mazza, Erik S. Steinmetz, Vyacheslav A. Pilipenko, Mark B. Moldwin, Martin G. Connors, Shin‐ichi Ohtani, Jesper W. Gjerloev   +7 more
wiley   +1 more source

Modulation of Galactic Cosmic Rays in Corotating Interaction Regions: Diffusion Dominates over Drifts and Advection

The Astrophysical Journal
Through a coupling of the Space Weather Modeling Framework and the Space Plasma and Energetic Charged particle Transport on Unstructured Meshes, we perform hybrid modeling of Galactic cosmic rays (GCRs), treated as a test-particle population, and their ...
J. G. Alonso Guzmán, W. Liu, V. Florinski, G. Tóth, K. Ghanbari, B. van der Holst   +5 more
doaj   +1 more source

Formation of Continuum Emission Structures Associated With the Aurora

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Recent observations enabled by improvements in geospace remote‐sensing instrumentation have revealed the spatial structure of continuum emissions that appear to be associated with the aurora, but little is known about the formation and drivers of these structures.
J. Houghton, E. Spanswick, J. Liang, B. Gallardo‐Lacourt   +3 more
wiley   +1 more source

Recurrent variations of anomalous oxygen in association with a corotating interaction region [PDF]

, 1996
The fluxes of anomalous oxygen (E ranging from 3.5-6.8 MeV/amu), as measured by the EPAC instrument on ULYSSES, show a recurrent variation with the solar rotation period, which is anticorrelated with the fluxes of particles accelerated at the shocks ...
M. Fränz, E. Keppler, M. K. Reuss
core   +1 more source

Influence of Mars Topography on Neutral Surface Radiation: Modeling and MSL/RAD Observations

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Since landing in 2012, the Radiation Assessment Detector (RAD) onboard the Mars science laboratory (MSL) Curiosity rover has encountered different local landscapes, which have induced variations in the local surface environment. The aim of this study is to include realistic and site‐specific local topography for any position in a radiation ...
Gabin Charpentier, Bent Ehresmann, Jingnan Guo, Salman Khaksarighiri, Rémi Bénacquista, Jean Christophe Malapert, Robert Ecoffet, Julien Mekki, Alexis Paillet, Sven Löffler, Robert F. Wimmer‐Schweingruber, Donald M. Hassler, Cary Zeitlin, Philippe Valet, Yves Gourinat   +14 more
wiley   +1 more source

Relative Contributions of Solar Wind Dynamic Pressure and Interplanetary Electric Field on the Early Positive Part of Main Phase of Geomagnetic Storms

Space Weather, Volume 24, Issue 3, March 2026.
Abstract The important early declining part of the main phase (MP) of geomagnetic storms in SYM‐H (and Dst) from positive main phase onset (MPO) to 0‐level of SYM‐H was somehow missed in the treatment of the storms. We included the missed part (or revised the storms) by raising the 0‐level of SYM‐H to MPO‐level, and showed that the inclusion is ...
Jijin K. Raj, N. Balan, Qing‐He Zhang, Y. Otsuka, K. Shiokawa, Zan‐Yang Xing, V. Manu, B. Nilam, Yu‐Zhang Ma, Yong Wang   +9 more
wiley   +1 more source