Results 11 to 20 of about 961,519 (212)
Dynamics of the solar photosphere with IBIS [PDF]
Astronomy & Astrophysics, 2006 Context. We investigate the quiet solar photosphere with the new Interferometric BI-dimensional Spectrometer (IBIS), recently installed at the Dunn Solar Telescope of the National Solar Observatory, Sacramento Peak, NM. Aims. We study the occurrence of reverse granulation in the mid-photosphere, and its properties. Methods.
K. Janssen, G. Cauzzi
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Acoustic wave propagation in the solar sub-photosphere with localised magnetic field concentration: effect of magnetic tension [PDF]
, 2009 Aims: We analyse numerically the propagation and dispersion of acoustic waves in the solar-like sub-photosphere with localised non-uniform magnetic field concentrations, mimicking sunspots with various representative magnetic field configurations ...
Shelyag, S. +14 more
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Simulations of magneto-convection in the solar photosphere [PDF]
, 2004 We have developed a 3D magnetohydrodynamics simulation code for applications in the solar convection zone and photosphere. The code includes a non-local and non-grey radiative transfer module and takes into account the effects of partial ionization.
Shelyag, S. +17 more
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Development and application of a global magnetic field evolution model for the solar corona [PDF]
, 2009 Magnetic fields are fundamental to the structure and dynamics of the Sun’s corona. Observations show them to be locally complex, with highly sheared and twisted fields visible in solar filaments/prominences.
Yeates, Anthony Robinson
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Solar flux emergence : a three-dimensional numerical study [PDF]
, 2008 Flux is continually emerging on the Sun, making its way from the solar interior up into the atmosphere. Emergence occurs on small-scales in the quiet Sun where magnetic fragments emerge, interact and cancel and on large-scales in active regions where ...
Murray, Michelle J.
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The Astrophysical Journal, 2023 The shear flow influences the stability of magnetohydrodynamic (MHD) waves. In the presence of a dissipation mechanism, flow shear may induce an MHD wave instability below the threshold of the Kelvin–Helmholtz instability, which is called dissipative ...
D. J. Yu
doaj +1 more source
Photospheric high-frequency acoustic power excess in sunspot umbra: signature of magneto-acoustic modes [PDF]
, 2013 We present observational evidence for the presence of MHD (magnetohydrodynamic) waves in the solar photosphere deduced from SOHO/MDI (Solar and Heliospheric Observatory/Michelson Doppler Imager) Dopplergram velocity observations.
Shelyag, S. +14 more
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Stokes diagnostics of simulations of magnetoconvection of mixed-polarity quiet-Sun regions [PDF]
, 2005 Realistic solar magneto-convection simulations including the photospheric layers are used to study the polarization of the Fe I Zeeman-sensitive spectral lines at 6301.5, 6302.5, 15 648 and 15 652 Å.
Shelyag, S. +13 more
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Radiative Diagnostics in the Solar Photosphere and Chromosphere [PDF]
Space Science Reviews, 2016 Accepted for publication in Space Science Reviews.
J. de la Cruz Rodríguez, M. van Noort
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Atomic data and the spectrum of the solar photosphere [PDF]
Physica Scripta, 1993 Even though the solar photospheric abundances are now on the whole in very good agreement with the meteoritic values, some problems remain which will only be solved with a higher level of accuracy in the atomic data, especially the transition probabilities for faint lines.
Grevesse, Nicolas +1 more
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