Re-examination of the Hubble Constant from the Sunyaev-Zel'dovich Effect: Implication for Cosmological Parameters

Shiho Kobayashi; Shin Sasaki; Yasushi Suto

doi:10.1093/pasj/48.6.L107

Re-examination of the Hubble Constant from the Sunyaev-Zel'dovich Effect: Implication for Cosmological Parameters

Astrophysics 2015-06-24 v1

Authors: Shiho Kobayashi , Shin Sasaki , Yasushi Suto

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Abstract

We performed a systematic and comprehensive estimate of the Hubble constant $H_0$ via the Sunyaev-Zel'dovich temperature decrement and the X-ray measurements for clusters up to the redshift $z=0.541$ , with particular attention to its dependence on the density parameter $\Omega_0$ , and the cosmological constant $\lambda_0$ . The resulting values of $H_0$ are largely consistent with that derived from the Cepheid distance for nearby galaxies. We discuss how the angular diameter distance $d_A$ vs. $z$ diagram from the accurate SZ measurements of high- $z$ clusters can distinguish the values of $\Omega_0$ and $\lambda_0$ .

Keywords

Hubble constant Sunyaev-Zel'dovich effect cosmological parameters angular diameter distance X-ray measurements

Cite

@article{arxiv.astro-ph/9610080,
  title  = {Re-examination of the Hubble Constant from the Sunyaev-Zel'dovich Effect: Implication for Cosmological Parameters},
  author = {Shiho Kobayashi and Shin Sasaki and Yasushi Suto},
  journal= {arXiv preprint arXiv:astro-ph/9610080},
  year   = {2015}
}

Comments

11 pages. 3 postscript figures included. Publications of the Astronomical Society of Japan (Letters), 1996, vol.48, No.6, in press

Re-examination of the Hubble Constant from the Sunyaev-Zel'dovich Effect: Implication for Cosmological Parameters

Abstract

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