Results 1 to 10 of about 346 (156)
FORMATION OF SOLAR FILAMENTS BY STEADY AND NONSTEADY CHROMOSPHERIC HEATING [PDF]
Astrophysical Journal, 2011 43 pages, 18 ...
Allard Jan van Marle +2 more
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A Cancellation Nanoflare Model for Solar Chromospheric and Coronal Heating [PDF]
Astrophysical Journal Letters, 2018 Abstract Nanoflare models for heating the solar corona usually assume magnetic braiding and reconnection as the source of the energy. However, recent observations at record spatial resolution from the Sunrise balloon mission suggest that photospheric magnetic flux cancellation is much more common than previously realized.
Petros Syntelis +2 more
exaly +6 more sources
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. Aim. We aim to investigate the atmospheric structure and heating of the solar chromosphere in an emerging flux ...
Mats Carlsson +2 more
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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
doaj +3 more sources
Atmospheric heating in solar flares by chromospheric condensation
Astrophysical Journal, 1994 More and more observational and theoretical evidence has shown the existence of a chromospheric condensation during solar flares. Can such a chromospheric condensation play a role in the energy process of the chromospheric flare? In this paper, we have empirically studied the influence of the chromospheric condensation on the distribution of the ...
Pablo Mauas, W Q Gan
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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 ...
Chun Xia, Peng-Fei Chen, Rony Keppens
exaly +3 more sources
A static model of chromospheric heating in solar flares
Astrophysical Journal, 1983 The response of the solar chromosphere to flare processes, namely nonthermal electrons, thermal conduction, and coronal pressure, is modeled. Finite difference methods employing linearization and iteration are used in obtaining simultaneous solutions to the equations of steady-state energy balance, hydrostatic equilibrium, radiative transfer, and ...
R C Canfield
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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
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Alfvén Wave Heating of Solar Chromosphere Reexamined
The Astrophysical JournalModels of heating the weakly ionized solar atmosphere by collisional damping of upward-propagating Alfvén waves, calculated under the assumption that only incompressible (intermediate-mode) MHD waves are involved, have predicted heating rates that do not
Vytenis M. Vasyliūnas
doaj +3 more sources
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
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