Papers regarding the solar redshift problem
Including especially a PDF of a 1916 paper by Evershed and Royds.
To the main page of this site: ../../
. Robin Whittle 3 March 2006.
On the change of wave-length of the iron lines in passing from the
centre of the sun's disc
J. Evershed and T. Royds
Kodaikanal Observatory Bulletin no. XLIX
Here is a PDF file, from photocopies kindly provided in
June 2003 by
the Library, Indian Institute of Astrophysics, Koramangala http://www.iiap.res.in/lib.html
The question of redshift at the limb of the Sun's disc could, in part,
be explained by a plasma-redshift mechanism - however there could be a
variety of other explanations as well. It is clearly a difficult
matter to explain in all its detail, such as which lines are affected
and why the relationship between limb-position and redshift differ
between the lines. The whole question of limb-shifts can only be
resolved in the context of considering outward flows which should give
rise to blue-shift in the centre of the disc, and in consideration of
gravitational redshift (general relativity), which should affect all
areas of the disc similarly, as best I know.
(12 pages 6.9 Megabytes)
for how I generated this PDF from TIFF files.)
The 1916 Evershed and Royds paper paper is mentioned at:
- A history of the solar red shift problem
of Science, Volume 17, Number 3, Number 3/September 1961, pp.
This highly detailed review is cited by some papers including:
- The center-to-limb wavelength shift of a number of
James Charles LoPresto and A. Keith Pierce
Solar Physics, Volume 102, Numbers 1-2 December 1985 Pages: 21
- Wavelength Shifts in the Solar Photospheric Spectrum
A. Keith Pierce and James C. Lopresto
Solar Physics Volume 196, Number 1 September 2000 Pages: 41 - 50
- My page ../../plasma-redshift-1/#Why-rs-not-observed
which mentions other relevant papers.
Some other papers of interest
See the discussion, starting 28 February 2006, about the solar redshift
/ solar limb-shift at sci.physics.research:
There is an extensive literature on this matter. Here are a few
( Search-engine bait: John Evershed, On the change of wavelength
of the iron lines in passing from the
centre of the sun's disc. ).