The Thermal Sunyaev Zel'dovich effect : a powerful probe for missing baryons

Details The Thermal Sunyaev Zel'dovich effect : a powerful probe for missing baryons The Thermal Sunyaev Zel'dovich effect : a powerful probe for missing baryons

2001-11-14

arxiv.org/abs/astro-ph/0111258v2

Astronomy and Astrophysics

Astrophysics

11 pages, 6 figures The 8th Taipei Astrophysics Workshop: AMiBA 2001: High-z Clusters, Missing Baryons, and CMB Polarization

Scientific paper

About 90% of baryons in the universe have thus far escaped direct observation. This is known as the {\it missing baryon problem}. The Sunyaev Zel'dovich effect (SZ effect) has the potential to directly measure the state of the majority of these missing baryons. The next generation CMB experiments such as AMIBA will provide an unbiased sample of the intergalactic medium through the SZ effect. The existing and upcoming simulations and analytical studies provide a quantitative understanding of the SZ effect. All these make the SZ effect a powerful baryon probe. We present an overview of this probe from both phenomelogical and theoretical aspects.

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