Results 11 to 20 of about 1,619,607 (208)

The Role of High-frequency Transverse Oscillations in Coronal Heating

open access: yesThe 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
doaj   +1 more source

FLOWS AND WAVES IN BRAIDED SOLAR CORONAL MAGNETIC STRUCTURES [PDF]

open access: yesThe Astrophysical Journal, 2015
6 pages, 5 figures, Accepted for publication in ApJ ...
V. Pant, A. Datta, D. Banerjee
openaire   +2 more sources

Investigating Alfvénic wave propagation in coronal open-field regions [PDF]

open access: yes, 2015
The physical mechanisms behind accelerating solar and stellar winds are a long-standing astrophysical mystery, although recent breakthroughs have come from models invoking the turbulent dissipation of Alfvén waves.
Morton, Richard   +2 more
core   +1 more source

Effect of structuring on coronal loop oscillations [PDF]

open access: yes, 2007
In this Thesis the theoretical understanding of oscillations in coronal structures is developed. In particular, coronal loops are modelled as magnetic slabs of plasma.
McEwan, Michael P.
core   +2 more sources

Standing Sausage Perturbations in Solar Coronal Slabs with Continuous Transverse Density Profiles: Cutoff Wavenumbers, Evanescent Eigenmodes, and Oscillatory Continuum

open access: yesThe 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
doaj   +1 more source

ALFVÉN WAVE SOLAR MODEL (AWSoM): CORONAL HEATING [PDF]

open access: yesThe 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
openaire   +2 more sources

High-frequency Alfven waves in multi-ion coronal plasma : observational implications [PDF]

open access: yes, 2005
We investigate the effects of high-frequency (of order ion gyrofrequency) Alfvén and ion-cyclotron waves on ion emission lines by studying the dispersion of these waves in a multi-ion coronal plasma.
Ofman, L. (Leon)   +3 more
core   +1 more source

A Multi-Event Study of Early-Stage SEP Acceleration by CME-Driven Shocks—Sun to 1 AU

open access: yesFrontiers 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
doaj   +1 more source

Observational signatures of waves and flows in the solar corona [PDF]

open access: yes, 2015
DM acknowledges support of a Royal Society University Research Fellowship and a KU Leuven Research Council senior research fellowship (SF/12/008). The research leading to these results has also received funding from the European Commission Seventh ...
Antolin, Patrick   +3 more
core   +1 more source

Propagation and damping of MHD waves in the solar atmosphere [PDF]

open access: yes, 2015
Quasi-periodic disturbances have been observed in the outer solar atmosphere for many years. Although first interpreted as upflows (Schrijver et al.
Kiddie, Greg
core   +2 more sources

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