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- Austrian Academy of SciencesAT480 papers
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- Center for Astrophysics Harvard & SmithsonianUS123 papers
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11 papers · 2 filters
Standard 1D solar atmosphere as initial condition for MHD simulations and switch-on effects
Philippe-A. Bourdin
Many applications in Solar physics need a 1D atmospheric model as initial condition or as reference for inversions of observational data. The VAL atmospheric models are based on ob…
Short-period stellar activity cycles with Kepler photometry
Oleksiy V. Arkhypov, Maxim L. Khodachenko, Helmut Lammer +3
We study the short-periodic component of stellar activity with a cycle periods Pcyc up to 1000 days using the Kepler mission photometry of fast-rotating (rotational periods from 1…
Strong coronal channelling and interplanetary evolution of a solar storm up to Earth and Mars
Christian Möstl, Tanja Rollett, Rudy A. Frahm +15
The severe geomagnetic effects of solar storms or coronal mass ejections (CMEs) are to a large degree determined by their propagation direction with respect to Earth. There is a la…
Long-term variation in the Sun's activity caused by magnetic Rossby waves in the tachocline
T. V. Zaqarashvili, R. Oliver, A. Hanslmeier +4
Long-term records of sunspot number and concentrations of cosmogenic radionuclides (10Be and 14C) on the Earth reveal the variation of the Sun's magnetic activity over hundreds and…
The Extreme Ultraviolet and X-Ray Sun in Time: High-Energy Evolutionary Tracks of a Solar-Like Star
Lin Tu, Colin P. Johnstone, Manuel Güdel +1
Aims. We aim to describe the pre-main sequence and main-sequence evolution of X-ray and extreme-ultaviolet radiation of a solar mass star based on its rotational evolution starting…
Formation and evolution of coronal rain observed by SDO/AIA on February 22, 2012
Z. Vashalomidze, V. Kukhianidze, T. V. Zaqarashvili +5
The formation and dynamics of coronal rain are currently not fully understood. Coronal rain is the fall of cool and dense blobs formed by thermal instability in the solar corona to…