Results 1 to 10 of about 881 (218)
FORMATION OF SOLAR FILAMENTS BY STEADY AND NONSTEADY CHROMOSPHERIC HEATING [PDF]
Astrophysical Journal, 2011 It has been established that cold plasma condensations can form in a magnetic loop subject to localized heating of its footpoints. In this paper, we use grid-adaptive numerical simulations of the radiative hydrodynamic equations to investigate the ...
C Xia, P F Chen, R Keppens
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Chromospheric heating during flux emergence in the solar atmosphere [PDF]
Astronomy and Astrophysics, 2018 Context: The radiative losses in the solar chromosphere vary from 4 kW m−2 in the quiet Sun, to 20 kW m−2 in active regions. The mechanisms that transport non-thermal energy to and deposit it in the chromosphere are still not understood.
J Leenaarts +2 more
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A Cancellation Nanoflare Model for Solar Chromospheric and Coronal Heating [PDF]
Astrophysical Journal Letters, 2018 L.P.C. received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 707837. The German contribution to SUNRISE and its reflight was funded by the Max Planck Foundation, the
E R Priest, L P Chitta, P Syntelis
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The Astrophysical JournalA proposed mechanism for solar chromospheric heating is magnetohydrodynamic waves propagating upward along magnetic field lines and dissipating their energy in the chromosphere.
Mayu Koyama, Toshifumi Shimizu
doaj +3 more sources
Constraining the Systematics of (Acoustic) Wave Heating Estimates in the Solar Chromosphere
The Astrophysical Journal, 2023 Acoustic wave heating is believed to contribute significantly to the missing energy input required to maintain the solar chromosphere in its observed state.
Momchil E. Molnar +4 more
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IRIS observations of chromospheric heating by acoustic waves in solar quiet and active regions
Astronomy and Astrophysics, 2021 Aims. To study the heating of solar chromospheric magnetic and nonmagnetic regions by acoustic and magnetoacoustic waves, the deposited acoustic-energy flux derived from observations of strong chromospheric lines is compared with the total integrated ...
M Sobotka, Michal Švanda, P Heinzel
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Alfvén wave heating of the solar chromosphere: 1.5D models [PDF]
The Astrophysical Journal, 2016 Physical processes which may lead to solar chromospheric heating are analyzed using high-resolution 1.5D non-ideal MHD modelling. We demonstrate that it is possible to heat the chromospheric plasma by direct resistive dissipation of high-frequency Alfvén
Shelyag, S. +4 more
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Observations of solar chromospheric heating at sub-arcsec spatial resolution
Astronomy and Astrophysics, 2018 A wide variety of phenomena such as gentle but persistent brightening, dynamic slender features (∼100 km), and compact (∼1″) ultraviolet (UV) bursts are associated with the heating of the solar chromosphere. High spatio-temporal resolution is required to
H N Smitha, L P Chitta, S K Solanki
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Evidence of ubiquitous Alfvén pulses transporting energy from the photosphere to the upper chromosphere [PDF]
Nature Communications, 2019 Heating of the upper solar atmospheric layers is an open question. Here, the authors show observational evidence that ubiquitous Alfven pulses are excited by prevalent photospheric swirls, which are found to propagate upwards and carry enough energy flux
Jiajia Liu +4 more
doaj +2 more sources
SIMULATIONS OF PROMINENCE FORMATION IN THE MAGNETIZED SOLAR CORONA BY CHROMOSPHERIC HEATING [PDF]
Astrophysical Journal Letters, 2012 Starting from a realistically sheared magnetic arcade connecting chromospheric, transition region to coronal plasma, we simulate the in-situ formation and sustained growth of a quiescent prominence in the solar corona. Contrary to previous works, our model captures all phases of the prominence formation, including the loss of thermal equilibrium, its ...
C Xia, P F Chen, R Keppens
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