Results 21 to 30 of about 16,482 (212)
Standing Kink Waves in Sigmoid Solar Coronal Loops: Implications for Coronal Seismology [PDF]
The Astrophysical Journal Letters, 2020 Abstract Using full three-dimensional magnetohydrodynamic numerical simulations, we study the effects of magnetic field sigmoidity or helicity on the properties of the fundamental kink oscillation of solar coronal loops. Our model consists of a single denser coronal loop, embedded in a plasma with dipolar force-free magnetic field with a
N. Magyar, V. M. Nakariakov
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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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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 Statistical Analysis of the Solar Phenomena Associated with Global EUV Waves [PDF]
, 2017 Solar eruptions are the most spectacular events in our solar system and are associated with many different signatures of energy release including solar flares, coronal mass ejections, global waves, radio emission and accelerated particles. Here, we apply
Carley, Eoin P. +4 more
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Solar flares and coronal shock waves [PDF]
Journal of Geophysical Research: Space Physics, 2001 The ignition of coronal shock waves by solar flares is investigated confronting the results of a simple MHD model with the observations. Characteristics of type II bursts recorded in the metric and decametric wavelength range are compared with the properties of the microwave and soft X‐ray bursts of the associated flares.
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The Heating of Solar Coronal Loops by Alfvén Wave Turbulence [PDF]
The Astrophysical Journal, 2017 Abstract In this paper we further develop a model for the heating of coronal loops by Alfvén wave turbulence (AWT). The Alfvén waves are assumed to be launched from a collection of kilogauss flux tubes in the photosphere at the two ends of the loop.
A. A. van Ballegooijen +2 more
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Nonlinear fast magnetosonic waves in solar coronal holes [PDF]
Astronomy & Astrophysics, 2001 Summary: A coronal hole is modeled as a slab of cold plasma threaded by a vertical, uniform magnetic field. A periodic driver acting at the coronal base is assumed to drive the velocity component normal to the equilibrium magnetic field. Previous works indicate that, in the linear regime, only fast mode perturbations propagate, since Alfvén waves are ...
Murawski, K. +2 more
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Impulsively Generated Linear and Non-linear Alfven Waves in the Coronal Funnels [PDF]
, 2014 We present simulation results of the impulsively generated linear and non-linear Alfv\'en waves in the weakly curved coronal magnetic flux-tubes (coronal funnels) and discuss their implications for the coronal heating and solar wind acceleration.
Chmielewski, P. +3 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
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Coronal Heating & Solar Wind Acceleration by Drift Waves
Journal of Physics: Conference Series, 2015 An alternative approach to the coronal heating problem, based on the theory of drift waves, has been proposed. The drift mode is the only mode that is able to survive the drastically different (collisional/collisionless) extremes in the different layers of the solar atmosphere. As a matter of fact, this mode is over stable, i.e.
Poedts, S., Kanella, Ch, Lapenta, G.
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