Apparatus Weighting Functions in Measuring the Line-of-Sight Velocities by the `Center of Gravity' Method

Details Apparatus Weighting Functions in Measuring the Line-of-Sight Velocities by the `Center of Gravity' Method Apparatus Weighting Functions in Measuring the Line-of-Sight Velocities by the `Center of Gravity' Method

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996soph..165...13k&link_type=abstract

Solar Physics, Volume 165, Issue 1, pp.13-22

Physics

Scientific paper

The conception of the Apparatus Weighting Function (AWF), numerically characterizing the contributions of different layers of the solar atmosphere to indications of the apparatus used is introduced. For the detection of line-of-sight velocities, measuring the shifts of the ‘center of gravity’ of a spectral line profile, AWFs have been calculated for several single lines used by the authors in their observations of the photospheric velocity field. A comparison of AWFs is given for instruments, based on the principles of measuring both the ‘center of gravity’ shifts and intensity differences in the line wings.

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