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Spectroscopic Observations of Differential Rotation With Height in the Solar Envelope*

Published online by Cambridge University Press:  12 April 2016

W.C. Livingston
W.C. Livingston*
Affiliation:
Kitt Peak National Observatory†, Tucson, Ariz., U.S.A.

Abstract

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The problem of determining the spectroscopic rotation of the sun is not one of instrumental sensitivity, which can be about 10 m/sec, but rather of abstracting the rotational component from the hierarchy of long-lived surface currents. Required are continued daily observations over long periods of time and this task is not presently feasible at most observatories. Past observations have indicated a height gradient of rotational angular velocities. We have determined the photosphere and chromosphere angular velocity gradient from observations across the disk of C 5380 Å(h≃ -250 km), CN 3882 Â (h ≃ 0 km), Ca+K3(h≃+ 5000 km), together with other Fraunhofer lines of intermediate origin while K-line spectra of prominences are used to sense the chromosphere-corona interface.

Type
Part IV / The Rotation of the Sun
Information
International Astronomical Union Colloquium , Volume 4: Stellar Rotation , 1970 , pp. 321 - 328
Copyright
Copyright © Reidel 1970

Footnotes

†

Operated by The Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation.

*

Kitt Peak National Observatory Contribution No. 531.

References

Adams, W. S.: 1911, Carnegie Inst, of Washington Publ., No. 138.Google Scholar
Aslanov, I. A.: 1963, Astron. Zh. 40, 1036 (Soviet Astron. – AJ 7, 794).Google Scholar
Brandt, J. C.: 1966, Astrophys. J. 144, 1221.Google Scholar
De Jager, C.: 1959, Handbuch der Physik (ed. by Fliigge, S.), Springer-Verlag, Berlin.Google Scholar
Evershed, J.: 1927, Monthly Notices Roy. Astron. Soc. 88, 126.Google Scholar
Evershed, J.: 1929, Monthly Notices Roy. Astron. Soc. 89, 250.Google Scholar
Evershed, J.: 1935, Monthly Notices Roy. Astron. Soc. 95, 503.Google Scholar
Evershed, J.: 1945, Monthly Notices Roy. Astron. Soc. 105, 204.Google Scholar
Hansen, R. T., Hansen, S. F., and Loomis, H. G.: 1969, Solar Phys., in press.Google Scholar
Liszka, L.: 1969, Kiruna Geophys. Obs. Report, No. 691.Google Scholar
Livingston, W. C.: 1969a, Solar Phys. 7, 144.Google Scholar
Livingston, W. C.: 1969b, Solar Phys. (in press).Google Scholar
Moore, C. E., Minnaert, M. G. J., and Houtgast, J.: 1966, N.B.S. Monograph 61.Google Scholar
Perepelkin, E. J.: 1932, Pulkovo Obs. Circ. No. 1.Google Scholar