Results 11 to 20 of about 962 (184)
The Role of High-frequency Transverse Oscillations in Coronal Heating
The Astrophysical Journal Letters, 2023 Transverse oscillations that do not show significant damping in solar coronal loops are found to be ubiquitous. Recently, the discovery of high-frequency transverse oscillations in small-scale loops has been accelerated by the Extreme Ultraviolet Imager ...
Daye Lim +5 more
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The Astrophysical Journal, 2023 The lack of observed sausage perturbations in solar active region loops is customarily attributed to the relevance of cutoff axial wavenumbers and the consequent absence of trapped modes (called “evanescent eigenmodes” here).
Zexing Wang +3 more
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FLOWS AND WAVES IN BRAIDED SOLAR CORONAL MAGNETIC STRUCTURES [PDF]
The Astrophysical Journal, 2015 6 pages, 5 figures, Accepted for publication in ApJ ...
V. Pant, A. Datta, D. Banerjee
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A Multi-Event Study of Early-Stage SEP Acceleration by CME-Driven Shocks—Sun to 1 AU
Frontiers in Astronomy and Space Sciences, 2022 The solar corona between below 10 solar radii is an important region for early acceleration and transport of solar energetic particles (SEPs) by coronal mass ejection-driven shock waves.
Kamen Kozarev +4 more
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ALFVÉN WAVE SOLAR MODEL (AWSoM): CORONAL HEATING [PDF]
The Astrophysical Journal, 2014 We present a new version of the Alfven Wave Solar Model (AWSoM), a global model from the upper chromosphere to the corona and the heliosphere. The coronal heating and solar wind acceleration are addressed with low-frequency Alfven wave turbulence. The injection of Alfven wave energy at the inner boundary is such that the Poynting flux is proportional ...
van der Holst, Bart +6 more
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High-frequency waves in the solar coronal plasma [PDF]
Astronomy & Astrophysics, 2006 We derived numerical solutions of a dispersion equation in order to analyze the effect of finite plasma temperature on the highfrequency wave dispersion characteristics in conditions of hot magnetized plasma in the solar corona. Spectra of the high-frequency eigen modes of these plasma were determined in conditions when the electron gyrofrequency is ...
V. G. Ledenev +2 more
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Impulsively generated kink wave trains in solar coronal slabs
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT We numerically follow the response of density-enhanced slabs to impulsive, localized, transverse velocity perturbations by working in the framework of ideal magnetohydrodynamics (MHD). Both linear and non-linear regimes are addressed. Kink wave trains are seen to develop along the examined slabs, sharing the characteristics that
Guo, Mingzhe +3 more
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Fast magnetohydrodynamic waves in a solar coronal arcade [PDF]
Astronomy & Astrophysics, 2017 Aims. To investigate detailed properties of fast MHD modes of a three-dimensional waveguide for a cylindrical magnetic arcade.\ud \ud Methods. To derive governing equations and dispersion relations for different density profiles and to numerically solve them to obtain\ud discrete eigenvalues for fast modes and the corresponding eigenfunctions.\ud \ud ...
Thackray, H., Jain, R.
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A new method for estimating global coronal wave properties based on their interaction with solar coronal holes [PDF]
Astronomy & Astrophysics, 2020 Among the effects of interactions between global coronal waves (CWs) and coronal holes (CHs) is the formation of reflected and transmitted waves. Observations of such events provide us with measurements of different CW parameters, such as phase speed and intensity amplitudes.
Piantschitsch, I. +2 more
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Density Enhancement Streams in The Solar Wind
The Astrophysical Journal Letters, 2023 This Letter describes a new phenomenon on the Parker Solar Probe of recurring plasma density enhancements that have Δ n/n ∼ 10% and that occur at a repetition rate of ∼5 Hz.
F. S. Mozer +7 more
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