Superstrong photospheric magnetic fields in sunspot penumbrae

30 Sep 2019 Siu-Tapia A. Lagg A. van Noort M. Rempel M. Solanki S. K.

Recently, there have been some reports of unusually strong photospheric magnetic fields (which can reach values of over 7 kG) inferred from Hinode SOT/SP sunspot observations within penumbral regions. These superstrong penumbral fields are even larger than the strongest umbral fields on record and appear to be associated with supersonic downflows... (read more)

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  • SOLAR AND STELLAR ASTROPHYSICS