Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 498, Issue 1, Pages L125-L129Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnrasl/slaa139
Keywords
surveys; cosmological parameters; large-scale structure of Universe; cosmology: observations
Categories
Funding
- NASA Headquarters under the NASA Earth and Space Science Fellowship program [80NSSC18K1081]
- National Science Foundation (NSF) [1616974]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1616974] Funding Source: National Science Foundation
Ask authors/readers for more resources
The counts-in-cells (CIC) galaxy probability distribution depends on both the dark matter clustering amplitude sigma(8) and the galaxy bias b. We present a theory for the CIC distribution based on a previous prescription of the underlying dark matter distribution and a linear volume transformation to redshift space. We show that, unlike the power spectrum, the CIC distribution breaks the degeneracy between sigma(8) and b on scales large enough that both bias and redshift distortions are still linear; thus, we obtain a simultaneous fit for both parameters. We first validate the technique on the Millennium Simulation and then apply it to the Sloan Digital Sky Survey main galaxy sample. We find sigma(8) = 0.92 +/- .08 and b = 1.39(-.09)(+.11) consistent with previous complementary results from redshift distortions and from Planck.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available