Blog
About

  • Record: found
  • Abstract: found
  • Article: found
Is Open Access

A detection of Baryon Acoustic Oscillations from the distribution of galaxy clusters

Preprint

Read this article at

Bookmark
      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

      Abstract

      We calculate the correlation function of 79,091 galaxy clusters in the redshift region of \(0.05 \leq z \leq 0.5\) selected from the WH15 cluster catalog. With a weight of cluster mass, a significant baryon acoustic oscillation (BAO) peak is detected on the correlation function with a significance of \(3.9 \sigma\). By fitting the correlation function with a \(\Lambda\)CDM model curve, we find \(D_v(z = 0.331) r_d^{fid}/r_d = 1269.4 \pm 58\) Mpc which is consistent with the Planck 2015 cosmology. We find that the correlation functions of the higher mass sub-samples show a higher amplitude at small scales of \(r < 80~h^{-1}{\rm Mpc}\), which is consistent with our precious result. We find a clear signal of the `Finger-of-God' effect on the 2D correlation function of the whole sample, which indicates the random peculiar motion of central bright galaxies in the gravitation potential well of clusters.

      Related collections

      Author and article information

      Journal
      1511.00392

      Cosmology & Extragalactic astrophysics

      Comments

      Comment on this article