Galaxy bias and the mean density of the universe

Details Galaxy bias and the mean density of the universe Galaxy bias and the mean density of the universe

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aipc..336..386t&link_type=abstract

Dark matter. AIP Conference Proceedings, Volume 336, pp. 386-389 (1995).

Mathematics

Logic

1

Dark Matter, Distances, Redshifts, Radial Velocities, Spatial Distribution Of Galaxies, Superclusters, Large-Scale Structure Of The Universe

Scientific paper

We have shown that the degeneracy in the cosmological density parameter, Ω0, and the IRAS galaxy bias parameter, bIRAS, which has plagued dynamical studies of large scale structure, can be broken. By combining the constraints set by the distortion pattern in the 1.2-Jy redshift survey, the amplitude of fluctuations observed by the COBE satellite, and a constraint set by nonlinear evolution of the density field, we have derived an analytic formula for the likelihood function of Ω0 and bIRAS. While the quality of the data still precludes a tight constraint on the absolute value of these parameters, the 99% confidence contour strongly excludes a low Ω0 universe. Preliminary results indicate that Ω0=1.0+/-0.4 and bIRAS=0.9+/-0.13. At the present this method is the only practical way of separating these parameters.

Affiliated with

Also associated with

No associations

Rating

Galaxy bias and the mean density of the universe does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Galaxy bias and the mean density of the universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galaxy bias and the mean density of the universe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1169440