Results 71 to 80 of about 1,793,812 (174)

Ionospheric Mechanisms Leading to Plasma‐Bubble Zonal Drift Reversal and Deformation During the 12 November 2025 Geomagnetic Storm

Space Weather, Volume 24, Issue 10, October 2026.
Abstract We present a multi‐instrument analysis of the ionospheric response to the intense geomagnetic storm of 12 November 2025 over the American sector, with emphasis on the longitudinally asymmetric deformation, latitudinal expansion, and zonal drift reversal of equatorial plasma bubbles (EPBs).
G. A. S. Picanço, I. Galkin, P. Song, E. Astafyeva, L. C. A. Resende, J. P. Marchezi, L. A. da Silva, P. R. Fagundes, C. M. Denardini, C. Martinis, A. M. Santos, V. G. Pillat, A. J. Coster, A. L. Christovam, S. R. Laranja, M. A. M. Lopes   +15 more
wiley   +1 more source

Universal Constants in Self-organized Criticality Systems

The Astrophysical Journal
The occurrence frequency distributions of fluxes ( F ) and fluences or energies ( E ) observed in the majority (in 18 out of 23 cases) of astrophysical phenomena are found to be consistent with the predictions of the fractal-diffusive self-organized ...
Markus J. Aschwanden
doaj   +1 more source

A Comparative Study of Ground-level Enhancement Events of Solar Energetic Particles

The Astrophysical Journal, 2023
Major solar eruptions can accelerate protons up to relativistic energies. Solar relativistic ions arriving at 1 au may cause a solar particle event detectable by the worldwide network of neutron monitors (NMs), a ground-level enhancement (GLE) event ...
Leon Kocharov, Alexander Mishev, Esa Riihonen, Rami Vainio, Ilya Usoskin   +4 more
doaj   +1 more source

Observation of Shortwave Fadeout Events Using Chinese Dual Auroral Radar Network (CN‐DARN) During the Severe Solar Storm in May 2024

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Shortwave fadeout (SWF) is a typical dayside high‐frequency radio disturbance caused by solar flare‐induced ionospheric ionization enhancement. Using newly built Chinese Dual Auroral Radar Network (CN‐DARN) observations, we investigate two X‐flare‐driven SWFs during the May 2024 geomagnetic superstorm (SYM‐H = −518 nT), on 10 May (pre‐storm ...
Junjie Tong, Jiaojiao Zhang, Hang Li, Wei Wang, Bianlong Zhao, Wenqian Chen, Xiang Deng, Ailan Lan, Jingye Yan, Chi Wang   +9 more
wiley   +1 more source

Topological structure of the magnetic solar corona [PDF]

, 2007
The solar corona is a highly complex and active plasma environment, containing many exotic phenomena such as solar flares, coronal mass ejections, prominences, coronal loops, and bright points.
Maclean, Rhona Claire
core   +2 more sources

Finding Novel Precursors for Solar Wind Stream Interaction Regions With Interpretable Deep Learning

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Solar wind stream interaction regions (SIRs) drive recurrent geomagnetic storms, yet most existing catalogs rely on expert inspection and simple thresholds that are subjective and can miss events with complex morphologies. We present SIREN (SIR Encoder Network), a lightweight Transformer‐based model for per‐timestep SIR detection from in situ ...
Prateek Mayank, Yogesh, Enrico Camporeale, D. Chakrabarty, Lan K. Jian, Gregory G. Howes, Thomas E. Berger   +6 more
wiley   +1 more source

Patterns of X-Ray and γ-Ray Flares: From Blazar to Magnetar and Sun

The Astrophysical Journal
Using Gaussian process methods, we analyzed the light curves of three extreme solar X-ray flares observed by the RHESSI satellite. Their variability characteristics were then compared with those of HXMT-HE X-ray burst (XRB; in SGR 1935+2154) associated ...
Haiyun Zhang, Dahai Yan, Lijuan Dong, Ping Zhang, Ruijing Tang, Jianeng Zhou, Lian Tao, Li Zhang, Niansheng Tang   +8 more
doaj   +1 more source

Predicting >10 MeV SEP Events from Solar Flare and Radio Burst Data

Universe, 2020
The prediction of solar energetic particle (SEP) events or solar radiation storms is one of the most important problems in the space weather field. These events may have adverse effects on technology infrastructures and humans in space; they may also ...
Marlon Núñez, Daniel Paul-Pena
doaj   +1 more source

Calibration Method of Empirical Atmospheric Density Based on Physics‐Informed Neural Networks

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Thermospheric density is a critical parameter for low Earth orbit satellite applications, including orbit prediction, collision risk assessment, and atmospheric drag analysis. However, empirical atmospheric density models exhibit significant uncertainties under disturbed space weather conditions, while purely data‐driven approaches may not ...
Weirong Huang, Shengfu Xia, Jiabao Sun, Xianglei Zhao, Xiangxu Lei, Guangyu Zhao, Junyu Chen   +6 more
wiley   +1 more source

A Near‐Real‐Time Deep‐Learning Solar Flare Forecasting System Supported by SDO/HMI and ASO‐S/FMG Magnetograms

Space Weather, Volume 24, Issue 10, October 2026.
Abstract This study develops and evaluates five deep learning models, including image‐based (CNN, SwinT) and video‐based (CNN‐LSTM, SwinT‐LSTM, Video SwinT), to forecast ≥ ${\ge} $M‐class flares within the next 24 hr using cross‐validation (CV) data sets.
Yongshang Lv, Pengchao Yan, Yanfang Zheng, Xuebao Li, Suo Liu, Ting Li, Jiaben Lin, Rui Wang, Liang Dong, Zamri Zainal Abidin, Noraisyah Mohamed Shah, Honglei Jin, Hongwei Ye, Shunhuang Zhang, Xiaotian Wang, JinFang Wei, Zixian Wu, Xusheng Huang   +17 more
wiley   +1 more source