Velocity Fields as a Probe of Cosmology

Details Velocity Fields as a Probe of Cosmology Velocity Fields as a Probe of Cosmology

2003-10-15

arxiv.org/abs/astro-ph/0310424v2

Astronomy and Astrophysics

Astrophysics

6 pages, 4 figures. Invited talk given at the 15th Rencontres De Blois: Physical Cosmology: New Results In Cosmology And The C

Scientific paper

Analyses of peculiar velocity surveys face several challenges, including low signal--to--noise in individual velocity measurements and the presence of small--scale, nonlinear flows. I will present three new analyses that attempt to address these inherent problems. The first is geared towards the better understanding of the estimated errors in the surveys, specifically sampling errors, and the resolution of the seeming disagreements between the surveys. Another develops a new statistic that does not suffer from the usual problems and gives robust results that are galaxy--morphology and distance--estimator independent. The third introduces a formalism that allows for the accounting of most of the non--linear signal whereby the signal to noise is increased and small--scale aliasing is removed.

Affiliated with

Also associated with

No associations

Rating

Velocity Fields as a Probe of Cosmology 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 Velocity Fields as a Probe of Cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Velocity Fields as a Probe of Cosmology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-527181