Vector magnetograph observations by the solar flare telescope at BOAO.

Details Vector magnetograph observations by the solar flare telescope at BOAO. Vector magnetograph observations by the solar flare telescope at BOAO.

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pyuno....s.441p&link_type=abstract

Publications of the Yunnan Observatory, Suppl. 1999, p. 441 - 445

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Solar Flares: Magnetograms

Scientific paper

The authors report that vector magnetograph (VMG) observations of the solar photosphere are being carried out by the Solar Flare Telescope (SOFT) at BOAO. The VMG uses a narrow band Lyot filter (FWHM = 0.125 A) for Stokes parameter (I,Q,U,V) observations to obtain longitudinal and transverse fields. The authors have obtained a filter-convolved line profile of Fe I 6302.5 for VMG by changing the central wavelength of the Lyot filter, which is consistent with the Sacramento Peak spectral atlas data. Using the line profile, the authors have determined calibration coefficients of longitudinal and transverse fields by the line slope method. Then they have compared vector fields of AR 8422 observed at BOAO with those at Mitaka. The comparison shows that longitudinal fields are very similar to each other, but transverse fields are a little different.

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