153 citations · 1.9k across the 70 of their papers we have counts for
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Force-free field modeling of twist and braiding-induced magnetic energy in an active-region corona
J. K. Thalmann, S. K. Tiwari, T. Wiegelmann
The theoretical concept that braided magnetic field lines in the solar corona may dissipate a sufficient amount of energy to account for the brightening observed in the active-regi…
Peripheral downflows in sunspot penumbrae
Michiel van Noort, Andreas Lagg, Sanjiv Tiwari +1
Sunspot penumbrae show high-velocity patches along the periphery. The high-velocity downflow patches are believed to be the return channels of the Evershed flow. We aim to investig…
Structure of sunspot penumbral filaments: a remarkable uniformity of properties
Sanjiv Kumar Tiwari, Michiel van Noort, Andreas Lagg +1
The sunspot penumbra comprises numerous thin, radially elongated filaments that are central for heat transport within the penumbra, but whose structure is still not clear. To inves…
Vertical flows and mass flux balance of sunspot umbral dots
T. L. Riethmüller, S. K. Solanki, M. van Noort +1
A new Stokes inversion technique that greatly reduces the effect of the spatial point spread function of the telescope is used to constrain the physical properties of umbral dots (…
Comparison of force-free coronal magnetic field modeling using vector fields from Hinode and Solar Dynamics Observatory
J. K. Thalmann, S. K. Tiwari, T. Wiegelmann
Photospheric magnetic vector maps from two different instruments are used to model the nonlinear force-free coronal magnetic field above an active region. We use vector maps inferr…