Results 41 to 50 of about 962 (184)
The Astrophysical Journal Letters, 2023 We propose that coronal heating in EUV coronal plumes is weaker, not stronger, than in adjacent nonplume coronal magnetic funnels. This expectation stems from (i) the observation that an EUV plume is born as the magnetic flux at the foot of the plume’s ...
Ronald L. Moore +3 more
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Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.Abstract The Cassini spacecraft spent 13 years orbiting Saturn, quasi‐continuously measuring Saturn's radio emissions. One of the key elements of the radio spectrum at Saturn is the Saturn Kilometric Radiation (SKR), and several studies have been written on events called Low Frequency Extensions (LFEs) which represent strong, continuous extensions of ...
C. M. Jackman +11 more
wiley +1 more source
Frequency-dependent Evolution of Propagating Intensity Disturbances in Polar Plumes
The Astrophysical JournalQuasiperiodic disturbances in EUV emission intensity, propagating along polar plumes in the solar corona, are frequently observed. Analysis of these propagating disturbances in the 171 Å bandpass of the Solar Dynamics Observatory/Atmospheric Imaging ...
Kyung-Suk Cho +3 more
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Solar wind and kinetic heliophysics [PDF]
Annales Geophysicae, 2018 This paper reviews recent aspects of solar wind physics and elucidates the role Alfvén waves play in solar wind acceleration and turbulence, which prevail in the low corona and inner heliosphere.
E. Marsch, E. Marsch
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Space Weather, Volume 24, Issue 8, August 2026.Abstract Large ionospheric disturbances were observed over Europe during the extreme geomagnetic storm on 10 May 2024. This study analyzes GNSS‐derived total electron content (TEC) and all‐sky imager data to investigate these disturbances. Pronounced TEC enhancements, irregularities, and strong gradients were confined to the auroral region above the ...
Grzegorz Nykiel +5 more
wiley +1 more source
The Astrophysical JournalThe response of a solar coronal plasma loop to an impulsive perturbation, demonstrating the simultaneous formation of guided and leaky fast magnetoacoustic wave trains, is numerically studied.
Mijie Shi +3 more
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Space Weather, Volume 24, Issue 8, August 2026.Abstract This paper quantitatively characterizes dB/dt peaks at four African equatorial‐ and low‐latitude stations, along latitudinal and local‐time gradients across different phases of selected geomagnetic storms. We investigate dB/dt response for intense geomagnetic storms, Dst ≤ −100 nT observed during solar cycle 24 over four stations in the ...
Wuraola E. Oyegunle +6 more
wiley +1 more source
Identification of Nonlinear Damping of Transverse Loop Oscillations by KHI-induced Turbulence
The Astrophysical JournalKink oscillations in coronal loops have been extensively studied for their potential contributions to coronal heating and their role in plasma diagnostics through coronal seismology. A key focus is the strong damping of large-amplitude kink oscillations,
Sihui Zhong +2 more
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Short period fast waves in solar coronal loops [PDF]
Astronomy & Astrophysics, 2003 Short period fast magnetoacoustic waves propagating along solar coronal loops, perturbing the loop boundary along the line of sight (LOS), may be observed by imaging telescopes. The relationship between the difference in emission intensity, the angle between the LOS and the direction of propagation and the wave amplitude and wavelength, is explored for
F. C. Cooper +2 more
openaire +1 more source