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- Space Research InstituteRU344 papers
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39 papers · 1 filter
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…
Frequency conversion of structured light
Fabian Steinlechner, Nathaniel Hermosa, Valerio Pruneri +1
We demonstrate the coherent frequency conversion of structured light, optical beams in which the phase varies in each point of the transverse plane, from the near infrared (803nm)…
Extreme hydrodynamic atmospheric loss near the critical thermal escape regime
N. V. Erkaev, H. Lammer, P. Odert +2
By considering martian-like planetary embryos inside the habitable zone of solar-like stars we study the behavior of the hydrodynamic atmospheric escape of hydrogen for small value…
Outgassing History and Escape of the Martian Atmosphere and Water Inventory
H. Lammer, E. Chassefière, Ö. Karatekin +11
The evolution and escape of the martian atmosphere and the planet's water inventory can be separated into an early and late evolutionary epoch. The first epoch started from the pla…
Origin and Stability of Exomoon Atmospheres - Implications for Habitability
H. Lammer, S. -C. Schiefer, I. Juvan +7
We study the origin and escape of catastrophically outgassed volatiles (HO, CO) from exomoons with Earth-like densities and masses of , and $…
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…