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Structure of sunspot penumbral filaments S. K. Tiwari , M. van Noort , A. Lagg , S. K. Solanki Max-Planck- Institut für Sonnensystemforschung , Katlenburg-Lindau.

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  1. Structure of sunspot penumbral filamentsS. K. Tiwari, M. van Noort, A. Lagg, S. K. SolankiMax-Planck-InstitutfürSonnensystemforschung, Katlenburg-Lindau Weapplyanewlydevelopedspatiallycoupledinversiontechniqueto high-resolution Hinode SOT/SP observationsof a sunspot. A height-dependentatmosphericstructureisobtainedthathasledto a unifiedobservationalpictureofsunspotpenumbralfilaments, andhasgivennewinsightsintotheirphysicalnature. l lo transverse cuts along vertical dot-dashed lines StructureofAveragedPenumbralFilament longitudinal slice along horizontal dashed line Inversion result: field inclination • penumbralfilamentsareremarkablysimilarwe • can form an average (standard) penumbralfilament • radial and lateral convectionpatternsclearlyvisible • uniformityofstructureconstrains MHD simulations huy Longitudinal cutalongcentralaxis • Strong • upflow (5kms-1) • @heads; strongerdownflow • (7kms-1) • @tails • B:1kG@ • bulk;1.5-2 kG@head; 2-3.5 kG • @tails Averaged penumbral filament Peculiarfilaments • Filaments withtwoheadsortailsandshortest/ longestfilamentsqualitativelyresemblethestandardfilament; quantitative differencesare evident. • tiwari@mps.mpg.de

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