Spectropolarimetery of Umbral Fine Structures from Hinode: Evidence for Magnetoconvection

Details Spectropolarimetery of Umbral Fine Structures from Hinode: Evidence for Magnetoconvection Spectropolarimetery of Umbral Fine Structures from Hinode: Evidence for Magnetoconvection

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008espm...12..2.7b&link_type=abstract

"12th European Solar Physics Meeting, Freiburg, Germany, held September, 8-12, 2008. Online at http://espm.kis.uni-freiburg.de/,

Physics

Scientific paper

We present spectropolarimetric analysis of umbral dots and light bridge fragment that show dark lanes in G-band images. Umbral dots show upflow as well as associated positive stokes V area asymmetry in central part. Bigger umbral dots show down flow patches in surrounding part that associated with negative stokes V area asymmetry.
Umbral dots show weaker magnetic field in central part and higher magnetic field in peripheral area. Umbral fine structures are much clear in total circular polarization as compared to continuum intensity. Umbral dots show temperature deficit above dark lanes. Magnetic field inclination show cusp above umbral dots and light bridge fragment. We compare our observational findings with 3D magnetohydrodynamic simulations.

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