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Solar Physics

, Volume 120, Issue 2, pp 249–251 | Cite as

Comment on ‘asymmetry and variations of solar limb darkening along the diameter defined by diurnal motion in April 1981’ by Neckel and Labs (1987)

  • P. Foukal
Article

Abstract

In a recent paper (Neckel and Labs, 1987a) a strong claim is made for detection of surprisingly large variations in photospheric limb darkening over time-scales of minutes to hours. Some of this evidence relies on re-interpretation of our measurements carried out at Kitt Peak between 1980–1982 (Petro et al., 1984). The purpose of this Comment is to draw attention to information we have published which suggests that the variations noted by Neckel and Labs are more likely to be of instrumental than solar origin.

Keywords

Strong Claim Solar Limb Solar Origin Diurnal Motion Photospheric Limb 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Elste, G.: 1988, in P. Foukal (ed.), Solar Radiative Output Variation, available from CRI, Inc., Cambridge, U.S.A., p. 204.Google Scholar
  2. Kuhn, J.: 1988, in P. Foukal (ed.), Solar Radiative Output Variation, available from CRI, Inc., Cambridge, U.S.A., p. 217.Google Scholar
  3. Neckel, H. and Labs, D.: 1987a, Solar Phys. 110, 139.Google Scholar
  4. Neckel, H. and Labs, D.: 1987b, Solar Phys. 110, 201.Google Scholar
  5. Petro, L., Foukal, P., and Kurucz, R.: 1985, Solar Phys. 98, 23.Google Scholar
  6. Petro, L., Foukal, P., Rosen, W., Kurucz, R., and Pierce, K.: 1984, Astrophys. J. 283, 426.Google Scholar
  7. Rosen, W. and Chromey, F.: 1985, Astron. J. 90, 139.Google Scholar
  8. Rosen, W., Foukal, P., Kurucz, R., and Pierce, A.: 1982, Astrophys. J. 253, L89.Google Scholar

Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • P. Foukal
    • 1
  1. 1.Cambridge Research and Instrumentation, Inc.CambridgeU.S.A.

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