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Hydrodynamical simulations of the Sunyaev–Zel'dovich effect: cluster scaling relations and X-ray properties

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posted on 2023-06-08, 05:49 authored by Antonio C Da Silva, Scott T Kay, Andrew R Liddle, Peter ThomasPeter Thomas
The Sunyaev–Zel'dovich (SZ) effect is a powerful new tool for finding and studying clusters at high redshift, particularly in combination with their X-ray properties. In this paper we quantify the expected scaling relations between these properties using numerical simulations with various models for heating and cooling of the cluster gas. For a Non-radiative model, we find scaling relations in good agreement with self-similar predictions: Y?T5/2X and Y?L5/4X. Our main results focus on predictions from Cooling and Preheating simulations, shown recently by Muanwong et al. to provide a good match to the X-ray scaling relations at z= 0. For these runs, we find slopes of approximately Y?T3X and Y?LX, steeper and flatter than the self-similar scalings respectively. We also study the redshift evolution of the scaling relations, and find that the slopes show no evidence of evolution out to redshifts well beyond unity, while the normalizations of relations between the SZ signal and X-ray properties do show evolution relative to that expected from self-similarity, particularly at z < 1.

History

Publication status

  • Published

File Version

  • Published version

Journal

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

Publisher

Oxford University Press

Issue

4

Volume

348

Page range

1401-1408

Department affiliated with

  • Physics and Astronomy Publications

Notes

As other da Silva paper. (27 citations)

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

First Open Access (FOA) Date

2016-03-22

First Compliant Deposit (FCD) Date

2016-11-10

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