PIRSA:09040033 Conference Cosmology

DOI10.48660/09040033

Conference/School: Sunyaev-Zeldovich Universe and the Future of Cluster Cosmology - 2009

Shang, C. (2009). Probing Cosmology and Cluster Structure with the Sunyaev–Zel’dovich Decrement vs. X–ray Temperature Scaling Relation. Perimeter Institute. https://pirsa.org/09040033

Shang, Cien. Probing Cosmology and Cluster Structure with the Sunyaev–Zel’dovich Decrement vs. X–ray Temperature Scaling Relation. Perimeter Institute, Apr. 27, 2009, https://pirsa.org/09040033 

@misc{ pirsa_PIRSA:09040033,
  doi = {10.48660/09040033},
  url = {https://pirsa.org/09040033},
  author = {Shang, Cien},
  keywords = {Cosmology},
  language = {en},
  title = {Probing Cosmology and Cluster Structure with the Sunyaev{\textendash}Zel{\textquoteright}dovich Decrement vs. X{\textendash}ray Temperature Scaling Relation},
  publisher = {Perimeter Institute},
  year = {2009},
  month = {apr},
  note = {PIRSA:09040033 see, \url{https://pirsa.org}}
}

Abstract

Scaling relations among galaxy cluster observables, which will become available in large future samples of galaxy clusters, could be used to constrain not only cluster structure,but also cosmology. I will discuss the utility of this approach, employing a physically motivated parametric model to describe cluster structure, and applying it to the expected relation between the Sunyaev-Zel’dovich decrement (S_{\nu}) and the emission–weighted X–ray temperature (Tew). With a suitable choice of fiducial parameter values, the cluster model satisfies several existing observational constraints. A Fisher matrix is employed to estimate the joint errors on cosmological and cluster structure parameters from a measurement of S_{\nu} vs. Tew in a future survey. I will also compare the cosmology constraints from the scaling relation to those expected from the number counts (dN/dz) of the same clusters.

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