Results 31 to 40 of about 1,559,234 (209)

The effect of colour on the thermal performance of building integrated solar collectors [PDF]

open access: yes, 2010
The use of solar collectors with coloured absorbers for water heating is an area of particular interest when considering their integration with buildings.
Carson, James K.   +5 more
core   +1 more source

The Heating of the Quiet Solar Chromosphere [PDF]

open access: yesSymposium - International Astronomical Union, 1990
The quiet solar chromosphere shows three distinct regions. Ordered according to the strength of the emission from the low and middle chromosphere they are (1) the magnetic elements on the boundary of supergranulation cells, (2) the bright points in the cell interior, and (3) the truly quiet chromosphere, also in the cell interior. The magnetic elements
openaire   +1 more source

HEATING OF THE MAGNETIZED SOLAR CHROMOSPHERE BY PARTIAL IONIZATION EFFECTS [PDF]

open access: yesThe Astrophysical Journal, 2012
Accepted for publication by The Astrophysical ...
E. Khomenko, M. Collados
openaire   +3 more sources

Observational study of chromospheric heating by acoustic waves [PDF]

open access: yes, 2020
Aims. Our aim is to investigate the role of acoustic and magneto-acoustic waves in heating the solar chromosphere. Observations in strong chromospheric lines are analyzed by comparing the deposited acoustic-energy flux with the total integrated radiative
Švanda, M.   +23 more
core   +1 more source

HEATING OF THE SOLAR CHROMOSPHERE AND CORONA BY ALFVÉN WAVE TURBULENCE [PDF]

open access: yesThe Astrophysical Journal, 2011
A three-dimensional MHD model for the propagation and dissipation of Alfven waves in a coronal loop is developed. The model includes the lower atmospheres at the two ends of the loop. The waves originate on small spatial scales (less than 100 km) inside the kilogauss flux elements in the photosphere.
van Ballegooijen, A. A.   +3 more
openaire   +2 more sources

ON THE SPATIAL SCALES OF WAVE HEATING IN THE SOLAR CHROMOSPHERE

open access: yesThe Astrophysical Journal, 2015
Dissipation of magnetohydrodynamic (MHD) wave energy has been proposed as a viable heating mechanism in the solar chromospheric plasma. Here, we use a simplified one-dimensional model of the chromosphere to theoretically investigate the physical processes and the spatial scales that are required for the efficient dissipation of Alfvén waves and slow ...
Roberto Soler   +2 more
openaire   +2 more sources

Heating of the solar chromosphere through current dissipation

open access: yesAstronomy & Astrophysics, 2022
Context.The solar chromosphere is heated to temperatures higher than predicted by radiative equilibrium. This excess heating is greater in active regions where the magnetic field is stronger.Aims.We aim to investigate the magnetic topology associated with an area of enhanced millimeter (mm) brightness temperatures in a solar active region mapped by the
J. M. da Silva Santos   +7 more
openaire   +3 more sources

Heating and dynamics of the quiet solar chromosphere [PDF]

open access: yesProceedings of the International Astronomical Union, 2007
AbstractThe quiet solar chromosphere in regions with negligible magnetic field is believed to be heated by acoustic waves. But their energy flux, measured in the upper photosphere with the Transition Region And Coronal Explorer (TRACE), has been found to be insufficient to account for the radiative emission from the chromosphere. Wedemeyer-Böhm et al. (
openaire   +1 more source

Approximations for radiative cooling and heating in the solar chromosphere [PDF]

open access: yesAstronomy & Astrophysics, 2012
accepted for publication in Astronomy & ...
Carlsson, M., Leenaarts, J.
openaire   +2 more sources

Fast Magnetic Wave Could Heat the Solar Low-beta Chromosphere [PDF]

open access: yesThe Astrophysical Journal Letters, 2021
Abstract Magnetohydrodynamic (MHD) waves are candidates for heating the solar chromosphere, although it is still unclear which mode of the wave is dominant in heating. We perform two-dimensional radiative MHD simulation to investigate the propagation of MHD waves in the quiet region of the solar chromosphere.
Yikang Wang   +2 more
openaire   +2 more sources

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