Quote:
Originally Posted by Nereid
(my bold)
What " relativistic effects" are currently in the SDSS DR5 Jerry? |
The raw data does not correct for redshift, it contains a redshift estimate and a redshift confidence assessment for each object. (if I said otherwise, I was wrong.)
All papers using the SDSS to evaluate the cosmic luminosity relationship, and all SDSS supernova data reduction pipelines, assume luminosity is dilated by the 1/(1+z)^4 function; and when the spectral bands are corrected for redshift, they are also corrected for periodic width. See Hogg:
The K correction:
http://arxiv.org/PS_cache/astro-ph/p.../0210394v1.pdf
These relativistic corrections for luminosity and line width are considered so well constrained by our observational base that in:
Cosmological Constraints from the SDSS Luminous Red Galaxies
http://arxiv.org/PS_cache/astro-ph/p.../0608632v2.pdf
Max Tegmark et al write that the SDSS and the WMAP extractions of the Dark Energy component - the power function are
completely independant. But if the relativistic corrections factors are wrong, this systemic bias permeates both data reduction pipelines.