The baryon mass function for galaxy clusters
Context. The evolution of the cluster abundance with redshift is known to be a powerful cosmological constraint when applied to X-ray clusters. Recently, the evolution of the baryon mass function has been proposed as a new variant that is free of the uncertainties present in the temperature-mass rel...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00046361_v452_n1_p47_Nuza |
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todo:paper_00046361_v452_n1_p47_Nuza2023-10-03T14:00:15Z The baryon mass function for galaxy clusters Nuza, S.E. Blanchard, A. Cosmology: cosmological parameters Cosmology: large-scale structure of Universe Cosmology: observations Astrophysics Band structure Data reduction Mathematical models Spectrum analysis Temperature Baryon mass function Cosmology: cosmological parameters Cosmology: large-scale structure of Universe Cosmology: observations Redshift Galaxies Context. The evolution of the cluster abundance with redshift is known to be a powerful cosmological constraint when applied to X-ray clusters. Recently, the evolution of the baryon mass function has been proposed as a new variant that is free of the uncertainties present in the temperature-mass relation. A flat model with ΩM ≃ 0.3 was shown to be preferred in the case of a standard cold dark matter scenario. Aims. We compared the high redshift predictions of the baryon mass in clusters with data for a more general class of spectra with a varying shape factor Γ without any restriction to the standard cold dark matter scenario in models normalized to reproduce the local baryon mass function. Methods. Using various halo mass functions existing in the literature we evaluated the corresponding baryon mass functions for the case of the non-standard power spectra mentioned previously. Results. We found that models with ΩM ≃ 1 and Γ ≃ 0.12 reproduce high redshift cluster data just as well as the concordance model does. Conclusions. Finally, we conclude that the baryon mass function evolution alone does not efficiently discriminate between the more general family of flat cosmological models with non-standard power spectra. © ESO 2006. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00046361_v452_n1_p47_Nuza |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Cosmology: cosmological parameters Cosmology: large-scale structure of Universe Cosmology: observations Astrophysics Band structure Data reduction Mathematical models Spectrum analysis Temperature Baryon mass function Cosmology: cosmological parameters Cosmology: large-scale structure of Universe Cosmology: observations Redshift Galaxies |
| spellingShingle |
Cosmology: cosmological parameters Cosmology: large-scale structure of Universe Cosmology: observations Astrophysics Band structure Data reduction Mathematical models Spectrum analysis Temperature Baryon mass function Cosmology: cosmological parameters Cosmology: large-scale structure of Universe Cosmology: observations Redshift Galaxies Nuza, S.E. Blanchard, A. The baryon mass function for galaxy clusters |
| topic_facet |
Cosmology: cosmological parameters Cosmology: large-scale structure of Universe Cosmology: observations Astrophysics Band structure Data reduction Mathematical models Spectrum analysis Temperature Baryon mass function Cosmology: cosmological parameters Cosmology: large-scale structure of Universe Cosmology: observations Redshift Galaxies |
| description |
Context. The evolution of the cluster abundance with redshift is known to be a powerful cosmological constraint when applied to X-ray clusters. Recently, the evolution of the baryon mass function has been proposed as a new variant that is free of the uncertainties present in the temperature-mass relation. A flat model with ΩM ≃ 0.3 was shown to be preferred in the case of a standard cold dark matter scenario. Aims. We compared the high redshift predictions of the baryon mass in clusters with data for a more general class of spectra with a varying shape factor Γ without any restriction to the standard cold dark matter scenario in models normalized to reproduce the local baryon mass function. Methods. Using various halo mass functions existing in the literature we evaluated the corresponding baryon mass functions for the case of the non-standard power spectra mentioned previously. Results. We found that models with ΩM ≃ 1 and Γ ≃ 0.12 reproduce high redshift cluster data just as well as the concordance model does. Conclusions. Finally, we conclude that the baryon mass function evolution alone does not efficiently discriminate between the more general family of flat cosmological models with non-standard power spectra. © ESO 2006. |
| format |
JOUR |
| author |
Nuza, S.E. Blanchard, A. |
| author_facet |
Nuza, S.E. Blanchard, A. |
| author_sort |
Nuza, S.E. |
| title |
The baryon mass function for galaxy clusters |
| title_short |
The baryon mass function for galaxy clusters |
| title_full |
The baryon mass function for galaxy clusters |
| title_fullStr |
The baryon mass function for galaxy clusters |
| title_full_unstemmed |
The baryon mass function for galaxy clusters |
| title_sort |
baryon mass function for galaxy clusters |
| url |
http://hdl.handle.net/20.500.12110/paper_00046361_v452_n1_p47_Nuza |
| work_keys_str_mv |
AT nuzase thebaryonmassfunctionforgalaxyclusters AT blancharda thebaryonmassfunctionforgalaxyclusters AT nuzase baryonmassfunctionforgalaxyclusters AT blancharda baryonmassfunctionforgalaxyclusters |
| _version_ |
1807321269833564160 |