Results 111 to 120 of about 14,496 (257)

The Formation Height of Millimeter-wavelength Emission in the Solar Chromosphere [PDF]

, 2020
Juan Martínez-Sykora, Bart De Pontieu, Jaime de la Cruz Rodriguez, Georgios Chintzoglou   +3 more
openalex   +1 more source

Inter-network regions of the Sun at millimetre wavelengths

, 2007
The continuum intensity at wavelengths around 1 mm provides an excellent way to probe the solar chromosphere. Future high-resolution millimetre arrays, such as the Atacama Large Millimeter Array (ALMA), will thus produce valuable input for the ongoing ...
Al, Ayres, B. Freytag, Bastian, Beasley, Brown, Carlsson, Carlsson, Conway, Escoffier, Fontenla, Freytag, H. G. Ludwig, J. Leenaarts, Krijger, Leenaarts, Loukitcheva, Loukitcheva, M. Steffen, S. Wedemeyer-Böhm, Tritschler, Uitenbroek, Vecchio, Wedemeyer, White, Wöger   +25 more
core   +3 more sources

THE INFLUENCE OF THE MAGNETIC FIELD ON RUNNING PENUMBRAL WAVES IN THE SOLAR CHROMOSPHERE [PDF]

, 2013
D. B. Jess, V. E. Reznikova, Tom Van Doorsselaere, P. H. Keys, D. H. Mackay   +4 more
openalex   +1 more source

Hall instability of solar flux tubes

, 2012
The magnetic network which consists of vertical flux tubes located in intergranular lanes is dominated by Hall drift in the photosphere-lower chromosphere region ($\lesssim 1 Mm$).
Pandey, B. P., Wardle, Mark
core   +1 more source

A Unified Model of Solar Prominence Formation with Self-consistent Heating

The Astrophysical Journal
Several models have been proposed to explain the formation of solar prominences, among which the evaporation–condensation model and the direct injection model are the most popular ones.
C. J. Huang, Y. W. Ni, J. H. Guo, P. F. Chen   +3 more
doaj   +1 more source

A single frequency approach to nonequilibrium modeling of the chromosphere

Astronomy & Astrophysics
Context. The solar chromosphere is a region where radiation plays a critical role in energy transfer and interacts strongly with the plasma. In this layer, strong spectral lines, such as the Lyman lines, contribute significantly to radiative energy ...
Ruan W., Przybylski D., Cameron R., Solanki S. K.   +3 more
doaj   +1 more source

Non-WKB Models of the FIP Effect: The Role of Slow Mode Waves

, 2011
A model for element abundance fractionation between the solar chromosphere and corona is further developed. The ponderomotive force due to Alfven waves propagating through, or reflecting from the chromosphere in solar conditions generally accelerates ...
Allan, Avrett, Banaszkiewicz, Brooks, Bryans, Campos, Carlsson, Cranmer, Cranmer, Cranmer, Feldman, Feldman, Feldman, Ferland, Giammanco, Giammanco, J. Martin Laming, Kasper, Khomenko, Ko, Laming, Laming, Laming, Laming, Landau, Litwin, Patsourakos, Phillips, Schwadron, Sylwester, Sylwester, Widing, Wood   +32 more
core   +1 more source

Observations of Locally Excited Waves in the Low Solar Atmosphere Using the Daniel K. Inouye Solar Telescope

The Astrophysical Journal Letters
We present an interpretation of the recent Daniel K. Inouye Solar Telescope (DKIST) observations of propagating wave fronts in the lower solar atmosphere.
Shah Mohammad Bahauddin, Catherine E. Fischer, Mark P. Rast, Ivan Milic, Friedrich Woeger, Matthias Rempel, Peter H. Keys, Thomas R. Rimmele   +7 more
doaj   +1 more source

Torsional Alfv\'en waves in solar partially ionized plasma: effects of neutral helium and stratification

, 2013
Ion-neutral collisions may lead to the damping of Alfven waves in chromospheric and prominence plasmas. Neutral helium atoms enhance the damping in certain temperature interval, where the ratio of neutral helium and neutral hydrogen atoms is increased ...
Khodachenko, M. L., Soler, R., Zaqarashvili, T. V.   +2 more
core   +1 more source

Zero-Field Dichroism in the Solar Chromosphere

Physical Review Letters, 2003
We explain the linear polarization of the Ca II infrared triplet observed close to the edge of the solar disk. In particular, we demonstrate that the physical origin of the enigmatic polarizations of the 866.2 nm and 854.2 nm lines lies in the existence of atomic polarization in their metastable lower levels, which produces differential absorption of ...
Sainz, R. Manso, Bueno, J. Trujillo
openaire   +3 more sources