Results 51 to 60 of about 2,315 (173)

High‐Latitude Electrodynamics and Thermospheric Density Variations During the 2024 Gannon Storm

Space Weather, Volume 24, Issue 2, February 2026.
Abstract This study investigates high‐latitude electrodynamics and thermospheric density variations during the 2024 Gannon's storm. First, the auroral precipitation module of Auroral Spectra and High‐Latitude Electric field variabilitY, ASHLEY‐A, is improved to more accurately capture the location of auroral precipitation observed during this ...
Qingyu Zhu, Sarah Vines, Marc Hairston, Yun‐Ju Chen, Phillip Anderson, Cheng Sheng, Yue Deng   +6 more
wiley   +1 more source

The space physics environment data analysis system (SPEDAS) [PDF]

, 2019
With the advent of the Heliophysics/Geospace System Observatory (H/GSO), a complement of multi-spacecraft missions and ground-based observatories to study the space environment, data retrieval, analysis, and visualization of space physics data can be ...
Angelopoulos, V., Cruce, P., Drozdov, A., Grimes, E. W., Hatzigeorgiu, N., King, D. A., Larson, D., Lewis, J. W., McTiernan, J. M., Roberts, D. A., Walsh, Brian M.   +10 more
core  

Self‐Regulating Feedback Between Field Line Curvature Scattering, Ring Current Pressure, and Magnetic Configuration

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract We incorporate field line curvature (FLC) scattering into a kinetic ring current model two‐way coupled with a global magnetospheric MHD model to investigate its role in SYM‐H prediction and global magnetospheric dynamics. FLC scattering reduces plasma pressure in regions where the ion gyroradius is comparable to the local FLC radius.
Suk‐Bin Kang, Alex Glocer, Mei‐Ching Fok, Cristian P. Ferradas, Natalia Buzulukova, Gonzalo Cucho‐Padin   +5 more
wiley   +1 more source

Shape Penalized Decision Forests for Imbalanced Data Classification

IEEE Access
Class imbalance poses a critical challenge in binary classification problems, particularly when rare but significant events are underrepresented in the training set.
Rahul Goswami, Aindrila Garai, Payel Sadhukhan, Palash Ghosh, Tanujit Chakraborty   +4 more
doaj   +1 more source

Redefining SAR Arc Generation: The Competing Roles of Magnetospheric and Ionospheric Energy Injection

AGU Advances, Volume 6, Issue 6, December 2025.
Abstract Stable auroral red (SAR) arcs are luminous subauroral emissions produced by the collisional excitation of oxygen atoms during geomagnetically active times. While traditionally attributed to inner magnetospheric electron heating, recent observations and simulations challenge the exclusivity of this mechanism.
Jing Liu, Wenbin Wang, Jun Liang, Libo Liu, Carlos Martinis, Joei Wroten, Yongliang Zhang, Yao Chen, Tianyu Cao, Yifan Lu   +9 more
wiley   +1 more source

Frequency Dependent Microseisms Sources: A Case Study in Oregon

Geophysical Research Letters
The origin of microseisms—whether from deep‐ocean sources or coastal reflections—has been debated for decades. In this study, we use Distributed Acoustic Sensing (DAS) and Ocean Bottom Seismometer data collected offshore Oregon to investigate microseisms
Han Xiao, Toshiro Tanimoto, Zack J. Spica, Frederik Tilmann   +3 more
doaj   +1 more source

Tuning the Dirac Cone of Bilayer and Bulk Structure Graphene by Intercalating First Row Transition Metals using First Principles Calculations

, 2017
Modern nanoscience has focused on two-dimensional (2D) layer structure materials which have garnered tremendous attention due to their unique physical, chemical and electronic properties since the discovery of graphene in 2004.
Mendoza-Cortes, Jose L., Pakhira, Srimanta   +1 more
core   +2 more sources

Analytical Model of a Toroidal Mode Field Line Resonance and Its Drift‐Resonant Interaction With Energetic Electrons

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract Ultra‐low‐frequency (ULF) waves play a critical role in magnetospheric dynamics, yet their transient growth and resonant electron interactions remain poorly understood. We develop a first‐principle model of toroidal mode field line resonances that captures wave growth, saturation, and phase mixing.
J. Liu, R. Rankin, A. W. Degeling, F. Fenrich   +3 more
wiley   +1 more source

Enhancing Social Studies Learning Outcomes in Elementary Classrooms through Audiovisual Media: A Classroom Action Research

Journal of Studies in Elementary Education
Background: Social Studies learning in elementary classrooms often remains below the expected standard when teaching is dominated by lectures and minimal instructional media.
Sumarsono, Fajar Setiawan
doaj   +1 more source

HAWK 2.0: A Monte Carlo program for Higgs production in vector-boson fusion and Higgs strahlung at hadron colliders

, 2014
The Monte Carlo integrator HAWK provides precision predictions for Higgs production at hadron colliders in vector-boson fusion and Higgs strahlung, i.e. in production processes where the Higgs boson is Attached to WeaK bosons.
Denner, Ansgar, Dittmaier, Stefan, Kallweit, Stefan, Mück, Alexander   +3 more
core   +1 more source