Results 21 to 30 of about 14,964 (204)

Multiwavelength studies of MHD waves in the solar chromosphere: An overview of recent results [PDF]

open access: yes, 2015
The chromosphere is a thin layer of the solar atmosphere that bridges the relatively cool photosphere and the intensely heated transition region and corona. Compressible and incompressible waves propagating through the chromosphere can supply significant
A. Andić   +429 more
core   +2 more sources

Investigating the Origin of the First Ionization Potential Effect With a Shell Turbulence Model

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The enrichment of coronal loops and the slow solar wind with elements that have low First Ionization Potential, known as the FIP effect, has often been interpreted as the tracer of a common origin.
Victor Réville   +6 more
doaj   +1 more source

Time‐Latitude Distribution of Prominences for 10 Solar Cycles: A Study Using Kodaikanal, Meudon, and Kanzelhohe Data

open access: yesEarth and Space Science, 2020
Solar prominences are structures of importance because of their role in polar field reversal. We study the long‐term variation of the time latitude distribution of solar prominences in this article.
Subhamoy Chatterjee   +4 more
doaj   +1 more source

Can High Frequency Acoustic Waves Heat the Quiet Sun Chromosphere? [PDF]

open access: yes, 2007
We use Hinode/SOT Ca II H-line and blue continuum broadband observations to study the presence and power of high frequency acoustic waves at high spatial resolution.
Carlsson, Mats   +11 more
core   +1 more source

Farley-Buneman Instability in the Solar Chromosphere [PDF]

open access: yes, 2009
The Farley-Buneman instability is studied in the partially ionized plasma of the solar chromosphere taking into account the finite magnetization of the ions and Coulomb collisions.
Gogoberidze, G.   +3 more
core   +2 more sources

Analysis and modeling of the dynamics of the glow of calcium and hydrogen lines in solar and stellar flares

open access: yesOpen Astronomy, 2021
We present intensity curves of solar flares obtained in the Hα hydrogen line and CaII H, CaIR 8542Å lines using multichannel spectrographs of Ondřejov Observatory (Czech Republic) for the period 2000–2012.
Kupryakov Yurij Alekseevich   +5 more
doaj   +1 more source

The Height Structure of the Solar Atmosphere from the EUV Perspective [PDF]

open access: yes, 1998
We investigate the structure of the solar chromosphere and transition region using full Sun images obtained with the Extreme Ultraviolet Imaging Telescope (EIT) aboard the Solar and Heliospheric Observatory (SOHO) spacecraft.
Kundu, M. R., White, S. M., Zhang, J.
core   +3 more sources

MHD wave modes resolved in fine-scale chromospheric magnetic structures [PDF]

open access: yes, 2015
Within the last decade, due to significant improvements in the spatial and temporal resolution of chromospheric data, magnetohydrodynamic (MHD) wave studies in this fascinating region of the Sun's atmosphere have risen to the forefront of solar physics ...
Jess, D. B., Verth, G.
core   +2 more sources

Chromospheric Oscillations

open access: yes, 1994
We show results from SO/Sacramento Peak data to discuss three issues: (i)--the spatial occurrence of chromospheric 3--min oscillations; (ii)--the validity of Ca II H&K line-center Doppler Shift measurements; (iii)--the signi ?cance of oscillation power and phase at frequencies above 10 mHz.
Lites, B.W., Rutten, R.J., Thomas, J.H.
openaire   +2 more sources

The Interface Region Imaging Spectrograph (IRIS) [PDF]

open access: yes, 2014
The Interface Region Imaging Spectrograph (IRIS) small explorer spacecraft provides simultaneous spectra and images of the photosphere, chromosphere, transition region, and corona with 0.33-0.4 arcsec spatial resolution, 2 s temporal resolution and 1 km ...
Akin, D. J.   +87 more
core   +2 more sources

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