Results 121 to 130 of about 16,482 (212)

Propagating Kink Waves in Chromospheric Jetlike Structures and Coronal Plumelets

open access: yesThe Astrophysical Journal
Coronal plumes and chromospheric jetlike structures are believed to be highly dynamic. We report the first direct observations of a propagating kink wave in a chromospheric jetlike structure and its associated plumelet structure in the upper corona of ...
Youqian Qi   +7 more
doaj   +1 more source

Ray tracing of ion-cyclotron waves in a coronal funnel

open access: yes, 2007
Remote observations of coronal holes have strongly implicated the kinetic interactions of ion-cyclotron waves with ions as a principal mechanism for plasma heating and acceleration of the fast solar wind.
Marsch, E., Mecheri, R.
core  

Nonlinearly Wave-Wave Interaction Leads to Solar Coronal Heating

open access: yesJournal of Condensed Matter
Nonlinear formulation of slow Alfvén wave in magnetized plasma which can be an essential ingredient of the solar space plasma is being studied. Various method has been adopted, mathematical formulation of the magnetohydrodynamic (MHD) waves can interpret the astrophysical phenomena happening in space plasma.
openaire   +1 more source

Detection of Kink Oscillations in Solar Coronal Loops by a Convolutional Neural Network–Long Short-term Memory Neural Network

open access: yesThe Astrophysical Journal Supplement Series
A hybrid machine learning model, which combines a shallow convolutional neural network and a long short-term memory (CNN-LSTM) network, has been developed to automate the detection of kink oscillations in coronal plasma loops within large volumes of high-
Sergey A. Belov   +3 more
doaj   +1 more source

Dynamics of Slow Solar Wind Emerging from an Equatorial Coronal Hole

open access: yesThe Astrophysical Journal
We present a three-dimensional reduced magnetohydrodynamics model to depict turbulence induced by Alfvén waves within the slow solar wind originating from an open magnetic field positioned in a coronal hole near the solar equator.
M. Asgari-Targhi, K. Fujiki
doaj   +1 more source

Evidence linking coronal mass ejections with interplanetary magnetic clouds [PDF]

open access: yes
Using proxy data for the occurrence of those mass ejections from the solar corona which are directed earthward, we investigate the association between the post-1970 interplanetary magnetic clouds of Klein and Burlaga and coronal mass ejections.
Hildner, E., Wilson, R. M.
core   +1 more source

Observation of Large-scale Kelvin–Helmholtz Instability Wave Driven by a Coronal Mass Ejection

open access: yesThe Astrophysical Journal Letters
The Kelvin–Helmholtz instability (KHI) can occur when there is a relative motion between two adjacent fluids. In the case of magnetized plasma, the shear velocity must exceed the local Alfvén speed for the instability to develop.
Leon Ofman   +5 more
doaj   +1 more source

Generation of Surface Sausage Oscillations of a Current Sheet and Propagating Magnetoacoustic Waves by Impulsive Reconnection

open access: yesThe Astrophysical Journal
Magnetic reconnection and magnetohydrodynamic waves may well be both playing a role in coronal heating. In this paper, we simulate reconnection in the corona as a response to the convergence of opposite-polarity magnetic sources at the base of the corona.
Sripan Mondal   +3 more
doaj   +1 more source

On the Origins of Coronal Alfvénic Waves

open access: yesThe Astrophysical Journal Letters
Alfvénic waves are considered a key contributor to the energy flux that powers the Sun’s corona, with theoretical models demonstrating their potential to explain coronal EUV and X-ray emission and the acceleration of the solar wind.
Richard J. Morton, Roberto Soler
doaj   +1 more source

Source Materials and Heating of Alfvénic Slow and Hot Solar Wind Revealed by Heavy Ions

open access: yesThe Astrophysical Journal
This work quantitatively studies the differences of heavy ions among non-Alfvénic slow wind (N-ASSW), classical fast wind (FSW), and Alfvénic slow and hot wind (ASSW and AHSW) by effect size and Kolmogorov–Smirnov statistic.
Shuyi Meng, Shuo Yao
doaj   +1 more source

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