In this work we describe a possible way to use X-ray and microwave observations of nearby galaxy clusters to derive the value of the Hubble constant, that parametrises the expansion rate of the Universe. We provide a brief introduction to the Sunyaev-Zel'dovich effect that allows to detect galaxy clusters at microwave frequencies, and the method to combine it with X-ray observables. We emphasize what kind of considerations should be done when applying the method on real data and study the effect of the geometry of the clusters on the final result.

Kozmanyan, A., Bourdin, H., de Gasperis, G., Mazzotta, P., & Vittorio, N. (2017). Derivation of the Hubble parameter using galaxy clusters. JOURNAL OF PHYSICS. CONFERENCE SERIES, 841 [10.1088/1742-6596/841/1/012004].

Derivation of the Hubble parameter using galaxy clusters

Bourdin H;de Gasperis G;Mazzotta P;Vittorio N
2017

Abstract

In this work we describe a possible way to use X-ray and microwave observations of nearby galaxy clusters to derive the value of the Hubble constant, that parametrises the expansion rate of the Universe. We provide a brief introduction to the Sunyaev-Zel'dovich effect that allows to detect galaxy clusters at microwave frequencies, and the method to combine it with X-ray observables. We emphasize what kind of considerations should be done when applying the method on real data and study the effect of the geometry of the clusters on the final result.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/05 - Astronomia e Astrofisica
English
Con Impact Factor ISI
Kozmanyan, A., Bourdin, H., de Gasperis, G., Mazzotta, P., & Vittorio, N. (2017). Derivation of the Hubble parameter using galaxy clusters. JOURNAL OF PHYSICS. CONFERENCE SERIES, 841 [10.1088/1742-6596/841/1/012004].
Kozmanyan, A; Bourdin, H; de Gasperis, G; Mazzotta, P; Vittorio, N
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/224313
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