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pro vyhledávání: '"photosphere"'
The emergence of magnetic flux from the deep convection zone plays an important role in the solar magnetism, such as the generation of active regions and triggering of various eruptive phenomena, including jets, flares, and coronal mass ejections. To
Externí odkaz:
http://arxiv.org/abs/2409.15442
Autor:
Berretti, M., Stangalini, M., Verth, G., Jafarzadeh, S., Jess, D. B., Berrilli, F., Grant, S. D. T., Duckenfield, T., Fedun, V.
It is well known that the dominant frequency of oscillations in the solar photosphere is $\approx$3 mHz, which is the result of global resonant modes pertaining to the whole stellar structure. However, analyses of the horizontal motions of nearly 1 m
Externí odkaz:
http://arxiv.org/abs/2407.03950
Publikováno v:
A&A 691, A37 (2024)
High-resolution solar observations have revealed the existence of small-scale vortices, as seen in chromospheric intensity maps and velocity diagnostics. Frequently, these vortices have been observed near magnetic flux concentrations, indicating a li
Externí odkaz:
http://arxiv.org/abs/2409.05769
The open solar flux, that is, the total magnetic flux escaping the Sun, is one of the most important parameters connecting solar activity to the Earth. The open solar flux is commonly estimated from photospheric magnetic field measurements by making
Externí odkaz:
http://arxiv.org/abs/2408.11525
The theoretical debris supply rate from a tidal disruption of stars can exceed about one hundred times of the Eddington accretion rate for a $10^{6-7}M_{\odot}$ supermassive black hole (SMBH). It is believed that a strong wind will be launched from t
Externí odkaz:
http://arxiv.org/abs/2404.17127
One-dimensional, semi-empirical models of the solar atmosphere are widely employed in numerous contexts within solar physics, ranging from the determination of element abundances and atomic parameters to studies of the solar irradiance and from Stoke
Externí odkaz:
http://arxiv.org/abs/2404.07067
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Autor:
Jadlovský, Daniel, Granzer, Thomas, Weber, Michael, Kravchenko, Kateryna, Krtička, Jiří, Dupree, Andrea K., Chiavassa, Andrea, Strassmeier, Klaus G., Poppenhäger, Katja
Publikováno v:
A&A 685, A124 (2024)
Betelgeuse, a red supergiant star of semi-regular variability, reached a historical minimum brightness in February 2020, known as the Great Dimming. Even though the brightness has returned to the values prior to the Great Dimming now, it continues to
Externí odkaz:
http://arxiv.org/abs/2312.02816
Observations of magnetic helicity transportation through the solar photosphere reflect the interaction of turbulent plasma movements and magnetic fields in the solar dynamo process. In this chapter, we have reviewed the research process of magnetic h
Externí odkaz:
http://arxiv.org/abs/2311.07131