Mathematics – Logic
Scientific paper
Nov 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..861..995m&link_type=abstract
ALBERT EINSTEIN CENTURY INTERNATIONAL CONFERENCE. AIP Conference Proceedings, Volume 861, pp. 995-1000 (2006).
Mathematics
Logic
Observational Cosmology, Distances, Redshifts, Radial Velocities, Spatial Distribution Of Galaxies
Scientific paper
The peculiar velocities of a large number of galaxies can be uniquely reconstructed using present redshift surveys. Our method, based on minimisation of Euler-Lagrange action, performs extremely well when tested against simulations. We apply our method to the updated NBG redshift galaxy catalogue and reconstruct the peculiar velocity field in our local supercluster. The requirement of the optimal correlation between the radial components of reconstructed velocities and the observed peculiar velocities derived from our extensive new catalog of distances puts stringent constraints on the values of the cosmological parameters. Our constraints intersect those from studies of microwave background fluctuations and statistical properties of galaxy clustering: the ensemble of constraints are consistent with Ωm = 0.22 +/- 0.02.
Colombi Stephane
Mohayaee Roya
Silk Joseph
Tully Brent R.
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