Aims: We study the presence of reversed polarity magnetic flux in sunspot penumbra. Methods: We applied a new regularized method to deconvolve...
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PublicationReturning magnetic flux in sunspot penumbrae
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PublicationSearch for torsional oscillations in isolated sunspots
In this work we seek evidence for global torsional oscillations in alpha sunspots. We have used long time series of continuum intensity and magnetic field...
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PublicationSignatures of Magnetic Reconnection at the Footpoints of Fan-shaped Jets on a Light Bridge Driven by Photospheric Convective Motions
Dynamical jets are generally found on light bridges (LBs), which are key to studying sunspot decay. So far, their formation mechanism is not fully understood...
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PublicationSignatures of the impact of flare-ejected plasma on the photosphere of a sunspot light bridge
Aims: We investigate the properties of a sunspot light bridge, focusing on the changes produced by the impact of a plasma blob ejected from a C-class flare...
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PublicationSize matters
The new generation of ground-based, large-aperture solar telescopes promises to significantly increase our capabilities to understand the many basic phenomena...
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PublicationSmall-scale magnetic flux emergence in a sunspot light bridge
Context. Light bridges are convective intrusions in sunspots that often show enhanced chromospheric activity. Aims: We seek to determine the nature of flux...
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PublicationSome properties of an isolated sunspot
We present an investigation of a single sunspot observed in the neutral Fe line at 1089.6 nm with the Tenerife Infrared Polarimeter at the Vacuum Tower...
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PublicationSpatial changes of the oscillatory pattern in sunspot penumbrae at the photospheric level.
We analyze time sequences of photospheric spectral lines in the penumbra of two sunspots. Two spectral lines sensitive to velocity fluctuations at two different...
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PublicationSpectral signature of uncombed penumbral magnetic fields
The uncombed penumbral model proposed by Solanki & Montavon (cite{sol93a}) is used to understand some recent observational results found in penumbrae. This...