Results 161 to 170 of about 78,655 (291)

Crystallization of stardust analogs under an electron flux atmosphere. [PDF]

PNAS Nexus
Shohan RA, Cly C, Speck A, Sargent B, Nuth JA, Whittington A, Ponce A.   +6 more
europepmc   +1 more source

Reconstruction of Two‐Dimensional Magnetohydrodynamic and Hall Magnetohydrodynamic Equilibria in Space Using Physics‐Informed Neural Networks

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 2, April 2026.
Abstract We present a novel data analysis technique based on physics‐informed neural networks (PINNs) to reconstruct two‐dimensional (2D) magnetohydrodynamic (MHD) and Hall MHD equilibria in a space plasma from in situ spacecraft measurements. Our method incorporates the steady‐state MHD or Hall MHD equations—a set of partial differential equations ...
Hiroshi Hasegawa, Eunjin Choi, Kyoung‐Joo Hwang, Kyunghwan Dokgo   +3 more
wiley   +1 more source

Near infra-red absorption spectroscopy for astrophysically significant ions. [PDF]

Exp Astron (Dordr)
Dowd K, Doyle E, Dunne P.
europepmc   +1 more source

Human‐Interpretable SEP Event Prediction Using White‐Box Explainable AI

Space Weather, Volume 24, Issue 4, April 2026.
Abstract Solar energetic particle (SEP) events pose radiation risks to astronauts and space systems, making their prediction essential. Although various prediction models have been developed, most machine learning (ML)‐based models lack interpretability; that is, it is difficult to explain the reasons behind individual predictions.
Naho Fujita, Yuta Kato, Kanya Kusano, Takashi Yanase, Chihiro Mitsuda   +4 more
wiley   +1 more source

Chip-integrated spectroscopy capable of temperature retrieval. [PDF]

Sci Rep
Du Y, Sua YM, Kumar S, Zhang J, Li X, Hu Y, Ghuman P, Huang Y.   +7 more
europepmc   +1 more source

A High‐Accuracy TEC Model for Low‐Mid Latitudes Using a BWO‐Optimized CNN‐xLSTM Hybrid Model With Multi‐Instrument Data Fusion

Space Weather, Volume 24, Issue 4, April 2026.
Abstract The total electron content (TEC) in the ionosphere is strongly affected by solar activity and geomagnetic disturbances in mid‐ and low‐latitude regions, making it a major source of error in GNSS navigation and communication systems. To improve the prediction accuracy of ionospheric TEC, this study proposes a deep learning model—Beluga Whale ...
Wang Li, Jitong Li, Jiale Li, Guanyu Chen, Dongsheng Zhao, Longjiang Li, Xiaoqing Zuo, Kefei Zhang   +7 more
wiley   +1 more source

Electron recombination of rotationally cold D₂H⁺ ions. [PDF]

Nat Commun
Znotins A, Faure A, Greene CH, Grieser M, Grussie F, Isberner LW, Kálosi Á, Kokoouline V, Müll D, Paul D, Pezzella M, Savin DW, Schippers S, Tennyson J, Wolf A, Novotný O, Kreckel H.   +16 more
europepmc   +1 more source

Why Coronal Mass Ejections Arrive Differently: Solar Cycle Modulation Through Solar Wind Structure

Space Weather, Volume 24, Issue 4, April 2026.
Abstract Coronal Mass Ejections (CMEs) are large structures of magnetized plasma ejected from the Sun's atmosphere into the heliosphere. The interaction of CMEs with the ambient solar wind during propagation affects arrival time and speed at Earth. Since the solar wind structure changes with the solar cycle, variability in the transit times and arrival
D. L. Gyeltshen, L. A. Barnard, M. J. Owens, P. Riley   +3 more
wiley   +1 more source

Alfvén Waves in Partially Ionised Solar Steady-State Plasmas. [PDF]

Sol Phys
Alshehri NF, Ballai I, Verth G, Fedun V.
europepmc   +1 more source

Modeling Study on Energetic Particle Distribution in the Ionospheric South Atlantic Anomaly at Height of the Space Station

Space Weather, Volume 24, Issue 4, April 2026.
Abstract The South Atlantic Anomaly (SAA) in Earth's radiation belt is a critical region that poses significant threats to the safety of Space Stations. This region harbors a high concentration of energetic particles that can penetrate Space Stations, thereby affecting onboard components and posing risks to astronauts.
Xiang Dong, Tao Yang, Mingchen Sun, Haimeng Li, Qinglin Zhu, Yifan Zhang   +5 more
wiley   +1 more source