Results 71 to 80 of about 938 (183)

Observing the Solar Chromosphere

open access: yes, 2007
This review is split into two parts: one on chromospheric line formation in answer to the frequent question "where is my line formed", and one presenting state-of-the-art imagery of the chromosphere. In the first part I specifically treat the formation of the Na D lines, Ca II H & K, and Halpha.
openaire   +4 more sources

What Happens in “Chromospheres”?

open access: yesStem Cells Translational Medicine, 2013
The recent paper by Santana et al. titled “Isolation, Characterization, and Differentiation of Progenitor Cells From Adult Human Adrenal Medulla” [1] is an interesting contribution to human chromaffin cell biology. However, I am concerned about omissions of important information in the literature that could lead to alternate interpretations of the ...
openaire   +2 more sources

Turbulence and Its Potential Impact on Solar Chromospheric and Coronal Heating

open access: yesThe Astrophysical Journal
Low-frequency turbulence in the solar chromosphere remains poorly understood. We address (1) the sources of low-frequency turbulence that potentially heat the chromosphere, and (2) how turbulence is transported and dissipated throughout the chromosphere ...
G. P. Zank   +10 more
doaj   +1 more source

Effect of Magnetic Diffusion in the Chromosphere on the Solar Wind

open access: yesThe Astrophysical Journal
We investigate nonideal magnetohydrodynamical (MHD) effects in the chromosphere on the solar wind by performing MHD simulations for Alfvén-wave-driven winds, explicitly including ohmic and ambipolar diffusion.
Masato Matsuoka   +3 more
doaj   +1 more source

A single frequency approach to nonequilibrium modeling of the chromosphere

open access: yesAstronomy & 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.   +3 more
doaj   +1 more source

Numerical Experiment on the Influence of Granulation-induced Waves on Solar Chromosphere Heating and Plasma Outflows in a Magnetic Arcade

open access: yesThe Astrophysical Journal
This paper offers a fresh perspective on solar chromosphere heating and plasma outflows, focusing on the contribution of waves generated by solar granulation.
M. Kumar   +5 more
doaj   +1 more source

On the Nature of the Solar Chromosphere

open access: yes, 2006
Proceedings 23th NSO Workshop, ASP Conference Series, 354, 282, in ...
openaire   +4 more sources

Preferential Appearance of Hα Moreton Waves along Photospheric Magnetic Network Boundaries

open access: yesThe Astrophysical Journal Letters
Moreton waves are rare chromospheric signatures of large-scale coronal disturbances, often associated with big flares and coronal mass ejections. Using high-cadence, full-disk H α spectroscopic observations from Chinese H α Solar Explorer, together with ...
C. H. Zhai   +3 more
doaj   +1 more source

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