Results 51 to 60 of about 112,391 (274)
The Astrophysical Journal Supplement SeriesThe electron temperature of the corona is one of the key physical parameters which reflect the complexity of coronal-heating processes. L. E. Cram was the first to show that the K-coronal spectrum, produced by the scattering of the photospheric spectrum ...
Jindřich Dospiva, Hana Druckmüllerová
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Modelling the total solar eclipse in 2024 with COCONUT
Astronomy & AstrophysicsContext. Coronal modelling is crucial for a better understanding of solar physics and heliophysics. Accurate plasma conditions at the outer boundary of a solar corona lead to more precise space weather predictions.
Baratashvili T. +4 more
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On ion-cyclotron-resonance heating of the corona and solar wind [PDF]
Nonlinear Processes in Geophysics, 2003 This paper concisely summarizes and critically reviews recent work by the authors on models of the heating of the solar corona by resonance of ions with high-frequency waves (up to the proton cyclotron frequency).
E. Marsch, C. Vocks, C.-Y. Tu
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Directly comparing coronal and solar wind elemental fractionation
, 2020 As the solar wind propagates through the heliosphere, dynamical processes irreversibly erase the signatures of the near-Sun heating and acceleration processes. The elemental fractionation of the solar wind should not change during transit however, making
Baker, D. +3 more
core +1 more source
Signatures for Solar Axions/WISPs
, 2010 Standard solar physics cannot account for the X-ray emission and other puzzles, the most striking example being the solar corona mystery. The corona temperature rise above the non-flaring magnetized sunspots, while the photosphere just underneath becomes
Anastassopoulos, Vassilis +6 more
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Periodic Variations in Visible Light Brightness as Tracers of Fine Coronal Structures
The Astrophysical JournalThe quiescent or dynamic nature of fine-scale raylike features in the Sun corona, observed in visible light, is still an open question. Here, we show that most of the daily and hourly periodic variations in visible light brightness of the high corona (up
Nathalia Alzate, Simone Di Matteo
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The Anatomical Record, EarlyView.Abstract To solidify their power over society, totalitarian regimes will usually eliminate any dissent, any perceived threats early on. These threats include not only political enemies but also educated and independent segments of society, such as professional associations.
Michael Hortsch
wiley +1 more source
Solar Stereoscopy and Tomography
Living Reviews in Solar Physics, 2011 We review stereoscopic and tomographic methods used in the solar corona, including ground-based and space-based measurements, using solar rotation or multiple spacecraft vantage points, in particular from the STEREO mission during 2007--2010 ...
Markus J. Aschwanden
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The Astrophysical Journal LettersThe variability of helium abundance in the solar corona and the solar wind is an important signature of solar activity, solar cycle, and solar wind sources, as well as coronal heating processes.
Leon Ofman, Yogesh, Silvio Giordano
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Scientific Reports, 2022 The anomalous heating of the solar upper atmosphere is one of the eight key problems in modern astronomy. Moreover, the stratification of the solar atmosphere is an outstanding key-problem in solar physics.
K. J. Li, J. C. Xu, W. Feng
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