Results 91 to 100 of about 1,498,055 (202)

Modeling multiphase plasma in the corona: prominences and rain

open access: yesLiving Reviews in Solar Physics
We review major achievements in our understanding of multiphase coronal plasma, where cool-dense and hot-tenuous matter coexists, brought about by advances in modeling and theory, inspired by observations.
Rony Keppens, Yuhao Zhou, Chun Xia
doaj   +1 more source

How Are the Abnormally Hot Chromosphere and Corona Heated by the Solar Magnetic Fields?

open access: yesThe Astrophysical Journal
The corona is a structure possessed by stars, including the Sun. The abnormal heating of the solar corona and chromosphere is one of the greatest mysteries in modern astronomy.
K. J. Li   +5 more
doaj   +1 more source

Coronal Heating from Alfvén Wave Turbulence in Solar Coronal Loops

open access: yes, 2020
This work is supported by the NSF-REU Solar Physics program at SAO, grant number AGS-1850750.
openaire   +2 more sources

Steady-state Heating of Diffuse Coronal Plasma in a Solar Active Region

open access: yesThe Astrophysical Journal
The solar corona is much hotter than lower layers of the solar atmosphere—the photosphere and chromosphere. The coronal temperature is up to 1 MK in quiet Sun areas, while up to several megakelvins in active regions, which implies a key role of the ...
Gregory D. Fleishman   +2 more
doaj   +1 more source

3D MHD Simulations of Coronal Loops Heated via Magnetic Braiding. I. Continuous Driving

open access: yesThe Astrophysical Journal
The nature and detailed properties of the heating of the million-degree solar corona are important issues that are still largely unresolved. Nanoflare heating might be dominant in active regions and quiet Sun, although direct signatures of such small ...
G. Cozzo   +15 more
doaj   +1 more source

Turbulent resistive heating of solar coronal arches

open access: yesThe Astrophysical Journal, 1983
The possibility that coronal heating occurs by means of anomalous Joule heating by electrostatic ion cyclotron waves is examined, with consideration given to currents running from foot of a loop to the other. It is assumed that self-fields generated by the currents are absent and currents follow the direction of the magnetic field, allowing the plasma ...
openaire   +1 more source

Zone of Preferential Heating for Minor Ions in the Solar Wind

open access: yesThe Astrophysical Journal
The properties of minor ions in the solar wind are important indicators of the state of the solar corona and the heating processes it undergoes as it expands.
Janelle Holmes   +4 more
doaj   +1 more source

Modelling chromospheric evaporation in response to coronal heating [PDF]

open access: yes, 2018
This thesis presents a new computationally efficient method for modelling the response of the solar corona to the release of energy. During impulsive heating events, the coronal temperature increases which leads to a downward heat flux into the ...
Johnston, Craig David
core   +1 more source

Five-minute Periodicities in the Population of Solar Coronal Brightenings

open access: yesThe Astrophysical Journal
The population of small-scale brightenings observed across broad regions of the quiet-Sun (QS) corona shows coherent strong periodicities of ≈5 minutes and amplitudes of 20% to 30% of the mean.
Huw Morgan   +4 more
doaj   +1 more source

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