Results 81 to 90 of about 16,482 (212)

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

Comparison of Damping Mechanisms for Transverse Waves in Solar Coronal Loops [PDF]

The Astrophysical Journal, 2017
Abstract We present a method to assess the plausibility of alternative mechanisms to explain the damping of magnetohydrodynamic transverse waves in solar coronal loops. The considered mechanisms are resonant absorption of kink waves in the Alfvén continuum, phase mixing of Alfvén waves, and wave leakage.
María Montes-Solís, Iñigo Arregui
openaire   +2 more sources

Signatures of Alfven waves in the polar coronal holes as seen by EIS/Hinode

, 2009
Context. We diagnose the properties of the plume and interplume regions in a polar coronal hole and the role of waves in the acceleration of the solar wind. Aims.
Antonucci, Banerjee, Banerjee, Culhane, D. Banerjee, D. Pérez-Suárez, De Pontieu, De Pontieu, Del Zanna, Dolla, Doyle, Giordano, Hassler, Hassler, Hassler, Hollweg, J. G. Doyle, Kosugi, Landi, Moran, Noci, Teriaca, Tomczyk, Tsuneta, Tsuneta, van de Hulst, Watanabe, Wilhelm, Wilhelm, Wilhelm, Wilhelm, Withbroe, Young   +32 more
core   +1 more source

75th Anniversary of ‘Existence of Electromagnetic-Hydrodynamic Waves’ [PDF]

, 2018
We have recently passed the 75th anniversary of one of the most important results in solar and space physics: Hannes Alfv\'en's discovery of Alfv\'en waves and the Alfv\'en speed. To celebrate the anniversary, this article recounts some major episodes in
A.J.B. Russell, Alexander J. B. Russell, B. De Pontieu, B. van der Holst, C. Walén, D. Southwood, D.B. Jess, E. Fermi, E.N. Parker, E.N. Parker, G.S. Kerr, H. Alfvén, H. Alfvén, H. Alfvén, H. Alfvén, H. Li, J. Clerk Maxwell, J.H. Piddington, J.W. Belcher, J.W. Belcher, J.W. Belcher, J.W. Dungey, J.W. Dungey, J.W. Reep, J.W. Reep, K. Birkeland, K. Hufbauer, L. Biermann, L. Biermann, L. Biermann, L. Fletcher, M. Schwarzschild, M.S. Ruderman, N. Herlofson, P.J. Coleman, P.J. Coleman Jr., P.J. Coleman Jr., P.M. Edwin, R.J. Morton, S. Chapman, S. Lundquist, S. Tomczyk, S.R. Cranmer, T.G. Cowling, T.G. Cowling, T.J. Okamoto, V.C.A. Ferraro, V.M. Nakariakov, W.D. Cummings, Y. Lin   +49 more
core   +3 more sources

Reconstructing Historical Solar Indices for Predicting Past Space Weather Events

Space Weather, Volume 24, Issue 4, April 2026.
Abstract Modeling and forecasting the near‐Earth space environment, specifically the thermosphere, is particularly important because it affects the motion of low‐Earth orbit objects through atmospheric drag. Solar indices such as F10.7, S10.7, M10.7, and Y10.7 are commonly used as inputs to ionospheric and thermospheric density models.
Poshan Belbase, Denny M. Oliveira, Theodosios Chatzistergos, Gangkai Poh, Eftyhia Zesta   +4 more
wiley   +1 more source

Nonlinear Wave Damping by Kelvin–Helmholtz Instability-induced Turbulence

The Astrophysical Journal
Magnetohydrodynamic kink waves naturally form as a consequence of perturbations to a structured medium, for example, transverse oscillations of coronal loops. Linear theory has provided many insights into the evolution of linear oscillations, and results
Andrew Hillier, Iñigo Arregui, Takeshi Matsumoto   +2 more
doaj   +1 more source

Unraveling Super Equatorial Plasma Bubbles (EPBs) Evolution During the 23 April 2023 Storm: Multi‐Instrument Observations and GITM‐SAMI3 Simulation

Space Weather, Volume 24, Issue 4, April 2026.
Abstract Storm‐time equatorial plasma bubble (EPB) dynamics play a critical role in space weather impacts on communication and navigation systems, yet the mechanisms governing their formation and evolution under storm conditions remain poorly understood.
Shasha Zou, Yulu Peng, Mary Smirnova, Grace Kwon, Zihan Wang, Joseph Huba, Aaron Ridley   +6 more
wiley   +1 more source

Magnetic Waves In Solar Coronal Loops

, 2014
Final presentations of the Center for Astrophysics HEA/SSP Solar Summer Intern Program.
openaire   +1 more source

Are Nonthermal Velocities in Active Region Coronal Loops Anisotropic?

The Astrophysical Journal, 2023
We have measured line widths in active region coronal loops in order to determine whether the nonthermal broadening is anisotropic with respect to the magnetic field direction. These nonthermal velocities are caused by unresolved fluid motions.
Michael Hahn, Mahboubeh Asgari-Targhi, Daniel Wolf Savin   +2 more
doaj   +1 more source

Secondary Waves, and/or the "Reflection" From and "Transmission" Through a Coronal Hole of an EUV Wave Associated With the 2011 February 15 X2.2 Flare Observed With SDO/AIA and STEREO/EUVI

, 2012
For the first time, the kinematic evolution of a coronal wave over the entire solar surface is studied. Full Sun maps can be made by combining images from the Solar Terrestrial Relations Observatory satellites, Ahead and Behind, and the Solar Dynamics ...
Angelos Vourlidas, Aschwanden, Attrill, Attrill, Attrill, Biesecker, Chen, Chen, Chen, Cheng, Cliver, Cohen, Downs, Downs, Gilbert, Gilbert, Gopalswamy, Gosain, Hudson, Jiang, Jie Zhang, Kosovichev, Kozarev, Li, Liu, Long, Ma, Ma, Narukage, Ofman, Ofman, Oscar Olmedo, Patsourakos, Patsourakos, Petrie, Pohjolainen, Schmidt, Schrijver, Thompson, Thompson, Veronig, Veronig, Veronig, Vršnak, Wang, Wang, Wang, Warmuth, West, White, Wills-Davey, Xin Cheng, Zhao   +52 more
core   +1 more source