Results 61 to 70 of about 2,286 (221)
Behavior of Magnetohydrodynamic Waves in the Viscous Coronal Loops [PDF]
Iranian Journal of Astronomy and AstrophysicsStudying the dynamics of magnetic plasmas in the presence of pressure gradients, gravity, and Lorentz forces is essential for understanding wave generation and propagation in the solar atmosphere and other magnetic environments.
Roza Rezaei, Zahra Fazel
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Understanding the Duration of Solar and Stellar Flares at Various Wavelengths
The Astrophysical Journal, 2023 Recent irradiance measurements from numerous heliophysics and astrophysics missions including Solar Dynamics Observatory (SDO), GOES, Kepler, TESS, Chandra, the X-ray Multi-Mirror Mission, and NICER have provided critical input into understanding the ...
Jeffrey W. Reep, Vladimir S. Airapetian
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Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.Abstract The objective of the present study is to investigate solar wind‐magnetosphere‐ionosphere coupling (SWMIC) under intense external driving in terms of dayside ground magnetic disturbances. Dayside magnetic reconnection drives a region‐1 sense current system, the SWMIC current system.
Shinichi Ohtani
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The Astrophysical Journal LettersMagnetohydrodynamic waves in coronal loops provide key seismological diagnostics through their characteristic time signatures. While fast and slow magnetoacoustic modes are routinely exploited, the entropy mode, despite being another eigenmode of the ...
Dmitrii Kolotkov +2 more
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How Does the Definition of a Geomagnetic Storm Affect the Contents of the Resulting Storm List?
Space Weather, Volume 24, Issue 5, May 2026.Abstract A geomagnetic storm is a significant and prolonged disturbance of the Earth's magnetic field caused by an enhancement of the ring current. Storms are typically identified using magnetic field measurements from multiple ground‐based magnetometers, and the corresponding dates and times of multiple storms can be collated to form a storm list ...
Atlas M. Patrick +6 more
wiley +1 more source
Recent Applications of Bayesian Methods to the Solar Corona
Frontiers in Astronomy and Space Sciences, 2022 Solar coronal seismology is based on the remote diagnostics of physical conditions in the corona of the Sun by comparison between model predictions and observations of magnetohydrodynamic wave activity.
Iñigo Arregui, Iñigo Arregui
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Predicting CME Arrivals From L5 Heliospheric Imagers: The Impact of HI Track Length
Space Weather, Volume 24, Issue 5, May 2026.Abstract The Solar TErrestrial RElations Observatory (STEREO) mission has laid a foundation for advancing real‐time space weather forecasting by enabling the evaluation of heliospheric imager (HI) data for predicting coronal mass ejection (CME) arrivals at Earth.
T. Amerstorfer +7 more
wiley +1 more source
Sausage oscillations of coronal loops [PDF]
, 2006 Aims. Analytical theory predicts the existence of trapped global (or fundamental) sausage fast magnetoacoustic modes in thick and dense coronal loops only, with the periods estimated as the ratio of double the loop length and the Alfvén speed outside the
V. M. Nakariakov +5 more
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Modeling Solar Energetic Neutral Atoms from Solar Flares and CME-driven Shocks
The Astrophysical Journal, 2023 We examine the production of energetic neutral atoms (ENAs) in solar flares and coronal mass ejection (CME)-driven shocks and their subsequent propagation to 1 au. Time profiles and fluence spectra of solar ENAs at 1 au are computed for two scenarios: (1)
Gang Li +7 more
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The Astrophysical JournalWe report on a flare-driven coronal rain event observed along postflare loops during the decay phase of an X1.6-class solar flare. Although high-resolution studies of flare-driven coronal rain have been conducted, imaging spectroscopic studies are rare ...
Donguk Song +8 more
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