Results 91 to 100 of about 1,619,607 (208)

Nonlinear Wave Damping by Kelvin–Helmholtz Instability-induced Turbulence

open access: yesThe 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   +2 more
doaj   +1 more source

Large-scale Globally Propagating Coronal Waves

open access: yesLiving Reviews in Solar Physics, 2015
Large-scale, globally propagating wave-like disturbances have been observed in the solar chromosphere and by inference in the corona since the 1960s. However, detailed analysis of these phenomena has only been conducted since the late 1990s.
Alexander Warmuth
doaj   +1 more source

A Multi‐Event Comparison of dB/dt Resulting From Omega Band Aurora

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Omega bands are an auroral form occurring in the dawn sector which cause magnetic perturbations on the ground as they drift eastwards. If these changes in the magnetic field are large, omega bands can become a space weather hazard as the corresponding geomagnetically induced currents have the potential to cause damage to ground based ...
R. M. Hodnett   +4 more
wiley   +1 more source

Predicting Coronal Mass Ejection Travel Times Using Enhanced Model‐Guided Machine Learning

open access: yesSpace Weather, Volume 24, Issue 8, August 2026.
Abstract Coronal mass ejections (CMEs) are key drivers of space weather events, posing risks to both space‐borne and ground‐based systems. An accurate prediction of their arrival time at Earth is critical for impact mitigation. To this end, physics‐informed artificial intelligence (AI) approaches have proven more effective than purely data‐driven or ...
M. Lampani   +4 more
wiley   +1 more source

Responses of a Coronal Hole to a Fast Flare-driven Coronal Wave

open access: yesThe Astrophysical Journal Letters
Coronal waves, significant solar phenomena, act as diagnostic tools for scientists studying solar atmosphere properties. Here, we present a novel observation detailing how a coronal wave event, associated with an X5.0 class flare, influenced the ...
Xiaofan Zhang   +14 more
doaj   +1 more source

Modeling the Propagation of Slow Magnetoacoustic Waves in a Multistranded Coronal Loop

open access: yesThe Astrophysical Journal
We study the propagation properties of slow magnetoacoustic waves in a multithermal coronal loop using a 3D MHD model, for the first time. A bundle of 33 vertical cylinders, each of 100 km radius, randomly distributed over a circular region of radius 1 ...
S. Krishna Prasad, T. Van Doorsselaere
doaj   +1 more source

Topological structure of the magnetic solar corona [PDF]

open access: yes, 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

The FIP and Inverse FIP Effects in Solar and Stellar Coronae

open access: yesLiving Reviews in Solar Physics, 2015
We review our state of knowledge of coronal element abundance anomalies in the Sun and stars. We concentrate on the first ionization potential (FIP) effect observed in the solar corona and slow-speed wind, and in the coronae of solar-like dwarf stars ...
J. Martin Laming
doaj   +1 more source

Solar Stereoscopy and Tomography

open access: yesLiving Reviews in Solar Physics, 2011
We review stereoscopic and tomographic methods used in the solar corona, including ground-based and space-based measurements, using solar rotation or multiple spacecraft vantage points, in particular from the STEREO mission during 2007--2010 ...
Markus J. Aschwanden
doaj  

Broad and Bidirectional Narrow Quasiperiodic Fast-propagating Wave Trains Associated with a Filament-driven Halo Coronal Mass Ejection on 2023 April 21

open access: yesThe Astrophysical Journal
This paper presents three distinct wave trains that occurred on 2023 April 21: a broad quasiperiodic fast-propagating (QFP) wave train and bidirectional narrow QFP wave trains.
Xinping Zhou   +10 more
doaj   +1 more source

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