Results 11 to 20 of about 28,168 (221)
Waves in the solar photosphere [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 The solar photosphere is a partially ionized medium with collisions between electrons, various metallic ions and neutral hydrogen playing an important role in the momentum and energy transport in the medium. Furthermore, the number of neutral hydrogen atom could be as large as $10^{4}$ times the number of plasma particles in the lower photosphere.
Pandey, Birendra B.P. +2 more
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The Solar Argon Abundance [PDF]
, 2007 The solar argon abundance cannot be directly derived by spectroscopic observations of the solar photosphere. The solar Ar abundance is evaluated from solar wind measurements, nucleosynthetic arguments, observations of B stars, HII regions, planetary ...
Katharina Lodders, Young P. R.
core +1 more source
Annales Geophysicae, 1999 Two aspects of solar MHD are discussed in relation to the work of the MHD simulation group at KIS. Photospheric magneto-convection, the nonlinear interaction of magnetic field and convection in a strongly stratified, radiating fluid, is a key process ...
M. Schüssler, M. Schüssler
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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
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Lower solar atmosphere and magnetism at ultra-high spatial resolution [PDF]
, 2016 We present the scientific case for a future space-based telescope aimed at very high spatial and temporal resolution imaging of the solar photosphere and chromosphere. Previous missions (e.g., HINODE, SUNRISE) have demonstrated the power of observing the
Collet, Remo +10 more
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Vorticity in the solar photosphere [PDF]
Astronomy & Astrophysics, 2010 Aims. We use magnetic and non-magnetic 3D numerical simulations of solar granulation and G-band radiative diagnostics from the resulting models to analyse the generation of small-scale vortex motions in the solar photosphere. Methods. Radiative MHD simulations of magnetoconvection are used to produce photospheric models.
Shelyag, S. +3 more
openaire +5 more sources
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 ...
Cally +31 more
core +2 more sources
On the generation of hydrodynamic shocks by mixed beams and occurrence of sunquakes in flares [PDF]
, 2015 Observations of solar flares with sunquakes by space- and ground-based instruments reveal essentially different dynamics of seismic events in different flares.
Zharkov, Sergei, Zharkova, Valentina
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Review of Image Processing Methods in Solar Photospheric Data Analyzes [PDF]
Iranian Journal of Astronomy and Astrophysics, 2023 With the exponential growth in data volume, especially in recent decades, the demand for data processing has surged across all scientific fields. Within astronomical datasets, the combination of solar space missions and ground-based telescopes has ...
Mohsen Javaherian, Zahra Eskandari
doaj +1 more source
The Astrophysical Journal, 2023 Observations show that there are twisted magnetic flux tubes and plasma flow throughout the solar atmosphere. The main purpose of this work is to obtain the damping rate of sausage modes in the presence of magnetic twist and plasma flow.
Mohammad Sadeghi +2 more
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