Magnetic Field Diagnostic Capability of Solar-B/SOT: Filtergraph Instrument

Details Magnetic Field Diagnostic Capability of Solar-B/SOT: Filtergraph Instrument Magnetic Field Diagnostic Capability of Solar-B/SOT: Filtergraph Instrument

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..358..189i&link_type=abstract

Solar Polarization 4, ASP Conference Series, Vol. 358, Proceedings of the conference held 19-23 September, 2005, in Boulder, Col

Physics

2

Scientific paper

The Narrowband Filter Instrument (NFI) of the Solar Optical Telescope onboard Solar-B provides 2D magnetograms/Dopplergrams with a tunable Lyot filter (width ˜ 0.1 Å) in 6 selected wavelength bands, and spatial sampling of 0.08 arcsec/px. The Zeeman-effect sensitivity of NFI and the detection limits of weak magnetic fields are evaluated for 2 photospheric and 3 chromospheric lines. Magnetic-field retrievability from the NFI observables is studied using synthetic Stokes profiles of Fe I 5250 Å. We find that, with optimized wavelength sampling at 4 positions, the inferred magnetic field is sufficiently accurate under the hypothesis of constant magnetic field and velocity along the LOS.

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