Mathematics – Logic
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.8201s&link_type=abstract
American Astronomical Society, 188th AAS Meeting, #82.01; Bulletin of the American Astronomical Society, Vol. 28, p.959
Mathematics
Logic
Scientific paper
I will review recent progress in our understanding of the dynamics of the nearby universe (z < 0.1) from redshift and peculiar velocity surveys of galaxies. We can put constraints on various important cosmological quantities through a variety of statistical analyses of these surveys. In particular, redshift surveys allow us to measure the density field traced by galaxies, from which follows the power spectrum of this density field. Relating this to the initial power spectrum of the dark matter requires understanding the non-linear evolution of density fluctuations and the relation between the distribution of dark matter and galaxies. Further constraints on the power spectrum on large scales come from observations of the velocity field. Comparison of the galaxy density field with the peculiar velocity field allows us to test our basic gravitational instability model that gives rise to the structures we see today. Moreover, it also allows a measurement of the cosmological density parameter Omega_0 , again subject to the uncertainties of the relative distribution of galaxies and dark matter. I will conclude with a discussion of large-scale redshift surveys in the advanced planning stages, which promise to increase the volume, number, and quality of galaxies surveyed by more than an order of magnitude.
No associations
LandOfFree
Redshift Surveys and Large-Scale Flows in the Nearby 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 Redshift Surveys and Large-Scale Flows in the Nearby Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Redshift Surveys and Large-Scale Flows in the Nearby Universe will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1355746