Milne-Eddington inversion for unresolved magnetic structures in the quiet Sun photosphere
نویسندگان
چکیده
منابع مشابه
The quiet-Sun photosphere and chromosphere.
The overall structure and the fine structure of the solar photosphere outside active regions are largely understood, except possibly the important roles of a turbulent near-surface dynamo at its bottom, internal gravity waves at its top and small-scale vorticity. Classical one-dimensional static radiation-escape modelling has been replaced by three-dimensional time-dependent magento-hydrodynami...
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The photospheric magnetic field outside of active regions and the network has a ubiquitous and dynamic line-of-sight component that strengthens from disk center to limb as expected for a nearly horizontal orientation. This component shows a striking time variation with an average temporal rms near the limb of 1.7 G at ∼3 resolution. In our moderate resolution observations the nearly horizontal ...
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We present new quantitative measurements of magnetic fields on the quiet Sun. The object was (a) to measure magnetic field strengths, and (b) to test the “kilogauss model,” which posits that the apparently weak fields are actually subtelescopic knots of kilogauss fields with small filling factors. We used a new arrangement we call the spectro-videomagnetograph (SPVMG), which applies the videoma...
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Aims. We describe a new form of small-scale magnetic flux emergence in the quiet Sun. This process seems to take vertical magnetic fields from the solar interior to the photosphere, where they appear above granular convection cells. Methods. High-cadence time series of spectropolarimetric measurements obtained by Hinode in a quiet region near disk center are analyzed. We extract line parameters...
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A comparison of BBSO H centerline ltergrams and videomagnetograms was made to investigate the existence of non-potential magnetic elds in the quiet Sun near magnetic network. We use the bril structure in the H images as a proxy for the horizontal chromospheric magnetic eld which we compare with the horizontal eld obtained by potential extrapolation of the observed, line-of-sight photospheric el...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 2016
ISSN: 2169-9380
DOI: 10.1002/2016ja022368