Deep probing of the photospheric sunspot penumbra: no evidence of field-free gaps
Context. Some models for the topology of the magnetic field in sunspot penumbrae predict regions free of magnetic fields or with only dynamically weak fields in the deep photosphere. Aims: We aim to confirm or refute the existence of weak-field regions in the deepest photospheric layers of the penumbra. Methods: We investigated the magnetic field
Borrero, J. M. et al.
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11
2016