The influence of cooling and feedback on cluster pressure profiles
In this paper, a new set of 30 high resolution cosmological simulations of galaxy clusters, run with increasingly realistic physics, are presented and compared to observations of the Sunyaev‐Zel'dovich (SZ) effect. It is found that the best fit to the Y500‐M500 relation is from the model withou...
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| Veröffentlicht in: | Astronomische Nachrichten 2013-05, Vol.334 (4-5), p.398-401 |
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| container_title | Astronomische Nachrichten |
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| creator | Pike, S.R. Kay, S.T. Newton, R.D.A. |
| description | In this paper, a new set of 30 high resolution cosmological simulations of galaxy clusters, run with increasingly realistic physics, are presented and compared to observations of the Sunyaev‐Zel'dovich (SZ) effect. It is found that the best fit to the Y500‐M500 relation is from the model without gas cooling, and that supernova feedback is insufficient to counteract the effect of cooling on the gas pressure. Clearly another more powerful source of feedback is required, suggesting that including the effects of active galactic nuclei (AGN) is vital if we are to replicate the SZ properties of the clusters accurately. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
| doi_str_mv | 10.1002/asna.201211866 |
| format | Article |
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| ispartof | Astronomische Nachrichten, 2013-05, Vol.334 (4-5), p.398-401 |
| issn | 0004-6337 1521-3994 |
| language | eng |
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| source | Access via Wiley Online Library |
| subjects | Active galactic nuclei Astronomical instruments Astrophysics Clusters Computer simulation Cooling effects Cosmology Feedback galaxies: clusters: general galaxies: clusters: intracluster medium Gas cooling methods: numerical Reproduction Stars & galaxies |
| title | The influence of cooling and feedback on cluster pressure profiles |
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