activity
20162026
most citedMRI turbulence in accretion discs at large magnetic Prandtl numbers

20 citations · 133 across the 24 of their papers we have counts for

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7 papers · 1 filter

astro-ph.SR2026

Tidal triggers and the predictability of solar activity

F. Stefani, G. M. Horstmann, G. Mamatsashvili +1

Magneto-Rossby waves in the solar tachocline are currently considered to be one of the main determinants of solar activity. In particular, they can give rise to the quasi-biennial…

astro-ph.SR2025

Reappraising the Elatina series: What if the Solar Interpretation Were Correct?

F. Stefani, M. Gugliotta, G. M. Horstmann +2

We revisit the sedimentary laminae from the Neoproterozoic Elatina Formation of South Australia. These were first interpreted as varves driven by solar activity and later as tidali…

astro-ph.SR2025

Adding further pieces to the synchronization puzzle: QBO, bimodality, and phase jumps

F. Stefani, G. M. Horstmann, G. Mamatsashvili +1

This work builds on a recently developed self-consistent synchronization model of the solar dynamo which attempts to explain Rieger-type periods, the Schwabe/Hale cycle and the Sue…

astro-ph.SR2024

One-winged butterflies: mode selection for azimuthal magnetorotational instability by thermal convection

A. Mishra, G. Mamatsashvili, M. Seilmayer +1

The effects of thermal convection on turbulence in accretion discs, and particularly its interplay with the magnetorotational instability (MRI), are of significant astrophysical in…

astro-ph.SR2023★ 2 cited

Rieger, Schwabe, Suess-de Vries: The Sunny Beats of Resonance

F. Stefani, G. M. Horstmann, M. Klevs +2

We propose a self-consistent explanation of Rieger-type periodicities, the Schwabe cycle, and the Suess-de Vries cycle of the solar dynamo in terms of resonances of various wave ph…

astro-ph.SR2023

Alfvén wave experiments with liquid rubidium in a pulsed magnetic field

Th. Gundrum, J. Forbriger, Th. Herrmannsdörfer +4

Magnetic fields are key ingredients for heating the solar corona to temperatures of several million Kelvin. A particularly important region with respect to this is the so-called ma…

astro-ph.SR2022★ 15 cited

Tidally Forced Planetary Waves in the Tachocline of Solar-like Stars

G. M. Horstmann, G. Mamatsashvili, A. Giesecke +2

Can atmospheric waves in planet-hosting solar-like stars substantially resonate to tidal forcing? Substantially at a level of impacting the space weather or even of being dynamo-re…