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Paper: Towards Measuring the Magnetic Energy Spectrum at Sub-Resolution Scales
Volume: 463, 2nd ATST-EAST Workshop in Solar Physics: Magnetic Fields from the Photosphere to the Corona
Page: 243
Authors: López Ariste, A.; Sainz Dalda, A.
Abstract: Area asymmetries in the Stokes V profile of the Zeeman-sensitive Fe I line at 630.25 nm shed light on gradients of velocity and magnetic field along the photon path. We use that information on observations of Hinode-SOT/SP of the quiet sun at different heliocentric angles to further investigate turbulent field models in those regions. The relationship between the asymmetry value and a correlation length scale for the field strength in the framework of stochastic radiative transfer for polarized light allows us to identify in the data subresolution scales of change of the magnetic field. From these we make a crude first attempt to determine the energy spectrum of the turbulent magnetic field down to the km scale as a proof-of-concept of the potential of this technique.
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