Results 101 to 110 of about 16,413 (221)

Study on the Responses in the Transition Region of Coronal Extreme-ultraviolet Waves

open access: yesThe Astrophysical Journal
Coronal extreme-ultraviolet (EUV) waves are globally propagating disturbances in the solar atmosphere. The existence of coronal EUV waves was predicted by chromospheric Moreton–Ramsey waves.
Xiaoqian Wang   +6 more
doaj   +1 more source

Solar coronal loop heating by cross-field wave transport

open access: yesThe Astrophysical Journal, 1989
Solar coronal arches heated by turbulent ion-cyclotron waves may suffer significant cross-field transport by these waves. Nonlinear processes fix the wave-propagation speed at about a tenth of the ion thermal velocity, which seems sufficient to spread heat from a central core into a large cool surrounding cocoon.
Peter Amendt, Gregory Benford
openaire   +1 more source

Coronal Alfven waves and the solar wind [PDF]

open access: yes
The observed properties of coronal Alfven waves in the solar wind at 1 AU are briefly reviewed, with some theoretical discussion of their probable effects on the dynamics of the expanding solar corona. It is concluded that coronal Alfven waves can have a
Belcher, J. W.
core   +1 more source

Modelling of Reflective Propagating Slow-mode Wave in a Flaring Loop

open access: yes, 2015
Quasi-periodic propagating intensity disturbances have been observed in large coronal loops in EUV images over a decade, and are widely accepted to be slow magnetosonic waves. However, spectroscopic observations from Hinode/EIS revealed their association
Fang, X.   +4 more
core   +1 more source

Alfven Wave Transmission and Heating of Solar Coronal Loops

open access: yesThe Astrophysical Journal, 1998
We discuss the problem of wave transmission from the solar photosphere into coronal loops. We conclude that wave energy can be efficiently transmitted into loops with a sufficiently twisted magnetic field. The value of the required twist is below but close to the threshold for kink instability.
C. Litwin, R. Rosner
openaire   +1 more source

The Error Estimation of Transverse Coronal Loop Oscillation Parameters Based on Least Chi-squares Fitting

open access: yesThe Astrophysical Journal Supplement Series
Transverse oscillations of coronal loops not only influence coronal dynamics, but also provide a new perspective for coronal detection. To enhance their exploitation and utilization, accurately estimating the oscillation parameters is crucial.
Hongbo Li   +5 more
doaj   +1 more source

Solar Energetic Particle Acceleration in Refracting Coronal Shock Waves

open access: yesThe Astrophysical Journal, 2004
Gradual solar energetic particle (SEP) events are known to be correlated with coronal mass ejections (CMEs) and soft X-ray flares. The current paradigm of particle acceleration in these events attributes it to CME-driven shock waves in the solar corona and in interplanetary space.
Rami Vainio, Josef I. Khan
openaire   +1 more source

Direct Evidence of the Hybrid Nature of Extreme-ultraviolet Waves and the Reflection of the Fast-mode Wave

open access: yesThe Astrophysical Journal
We performed an analysis of the extreme-ultraviolet (EUV) wave event on 2022 March 31. The event originated from active region (AR) 12975 located at N13W52 in the field of view of the Atmospheric imaging Assembly (AIA) and exactly at the west limb viewed
Ramesh Chandra, P. F. Chen, Pooja Devi
doaj   +1 more source

New analytical and numerical models of solar coronal loop: I. Application to forced vertical kink oscillations

open access: yes, 2014
Aims. We construct a new analytical model of a solar coronal loop that is embedded in a gravitationally stratified and magnetically confined atmosphere. On the basis of this analytical model, we devise a numerical model of solar coronal loops.
Kraskiewicz, J.   +3 more
core   +1 more source

Kinetic Physics of the Solar Corona and Solar Wind

open access: yesLiving Reviews in Solar Physics, 2006
Kinetic plasma physics of the solar corona and solar wind are reviewed with emphasis on the theoretical understanding of the in situ measurements of solar wind particles and waves, as well as on the remote-sensing observations of the solar corona made by
Marsch Eckart
doaj  

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