Cosmic Flows on 100 Mpc/h scales

Details Cosmic Flows on 100 Mpc/h scales Cosmic Flows on 100 Mpc/h scales

2008-05-12

arxiv.org/abs/0805.1721v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, Conference proceedings for the 43rd Rencontres de Moriond, La Thuile (Val d'Aosta, Italy) March 15 - 22, 2

Scientific paper

To study galactic motions on the largest available scales, we require bulk flow moments whose window functions have as narrow a peak as possible and having as small an amplitude as possible outside the peak. Typically the moments found using the maximum likelihood estimate weights do not meet these criteria. We present a new method for calculating weights for moments that essentially allow us to "design" the moment's window function, subject, of course, to the distribution and uncertainties of the available data.

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