We present a consistent model of storage, instability and dynamical eruption of magnetic flux tubes in the solar convection zone and underlying overshoot region...
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PublicaciónInstability and eruption of magnetic flux tubes in the solar convection zone
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PublicaciónLong-term Spatial and Temporal Variations of Aurora Borealis Events in the Period 1700 - 1905
Catalogues and other records of aurora-borealis events were used to study the long-term spatial and temporal variation of these phenomena in the period from...
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PublicaciónLong-Term Trends and Gleissberg Cycles in Aurora Borealis Records (1600 - 2015)
The long-term spatial and temporal variation of aurora borealis events from 1600 to the present were studied using catalogues and other records of these...
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PublicaciónLong-term Variation of Solar Activity by a Dynamo Based on Magnetic Flux Tubes
We show that cyclic activity and Maunder-type grand minima can be explained by a dynamo driven by the instability of magnetic flux tubes in the overshoot layer...
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CharlaMagnetic bright points in the quiet Sun
We present a visual determination of the number of bright points (BPs) existing in the quiet Sun, which are structures though to trace intense kG magnetic...
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PublicaciónModeling of integrated sunlight velocity measurements: The effect of surface darkening by magnetic fields
It has been known since the work by Claverie et al. (1982) that integrated-sunlight velocities measured with the resonance scattering technique show variations...
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CharlaMysteries of the magnetic Sun
The Sun presents us with many unsolved mysteries. In this talk I discuss three of them that have intrigued me for the last 50 years. Solar flares are the most...
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PublicaciónNew windows to the universe; Proceedings of the Eleventh European Regional Astronomy Meeting, Universidad de la Laguna, Spain, July 3-8, 1989. Part II
Recent observational and theoretical investigations of the sun and sunlike stars and of galactic structure and evolution are discussed in reviews and reports...
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PublicaciónNonlinear time-evolution of kink-unstable magnetic flux tubes in the convective zone of the sun
The nonlinear development of the kink instability in a horizontal magnetic flux tube with a field strength exceeding the equipartition value lying initially in...