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The effect of spatial smearing on solar Doppler measurements

II. General formulation and application to limb effect and large-scale velocity fields

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Abstract

A general mathematical formulation of the effect of spatial smearing on solar velocity measurements is presented. The variations of the straylight induced error with wavelength and line parameters are discussed. The spatial and time dependence of the error will influence the measurement of solar limb effect and may introduce fictitious large scale velocity fields with amplitudes of the order of a few m/s.

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Authors and Affiliations

  1. Institute of Theoretical Astrophysics, University of Oslo, Oslo, Norway

    B. N. Andersen

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  1. B. N. Andersen
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Present address: Space Science Department of ESA, ESTEC, Noordwijk, The Netherlands.

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Andersen, B.N. The effect of spatial smearing on solar Doppler measurements. Sol Phys 107, 27–38 (1986). https://doi.org/10.1007/BF00155338

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  • DOI: https://doi.org/10.1007/BF00155338

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