Future constraints on the gravitational slip with the mass profiles of galaxy clusters

• Verfasst von: Pizzuti, Lorenzo [VerfasserIn]
• Verfasst von: Casas, Santiago [VerfasserIn]
• Verfasst von: Amendola, Luca [VerfasserIn]
• Titel: Future constraints on the gravitational slip with the mass profiles of galaxy clusters
• Verf.angabe: Lorenzo Pizzuti, Ippocratis D. Saltas, Santiago Casas, Luca Amendola, Andrea Biviano
• E-Jahr: 2019
• Jahr: 7 Jan 2019
• Umfang: 21 S.
• Fussnoten: Gesehen am 13.10.2020
• Titel Quelle: Enthalten in: De.arxiv.org
• Ort Quelle: [S.l.] : Arxiv.org, 1991
• Jahr Quelle: 2019
• Band/Heft Quelle: (2019) Artikel-Nummer 1901.01961, 21 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: General Relativity and Quantum Cosmology
• Sach-SW: Astrophysics - Cosmology and Nongalactic Astrophysics
• K10plus-PPN: 1587639823

Abstract

The gravitational slip parameter is an important discriminator between large classes of gravity theories at cosmological and astrophysical scales. In this work we use a combination of simulated information of galaxy cluster mass profiles, inferred by Strong+Weak lensing analyses and by the study of the dynamics of the cluster member galaxies, to reconstruct the gravitational slip parameter $\eta$ and predict the accuracy with which it can be constrained with current and future galaxy cluster surveys. Performing a full-likelihood statistical analysis, we show that galaxy cluster observations can constrain $\eta$ down to the percent level already with a few tens of clusters. We discuss the significance of possible systematics, and show that the cluster masses and numbers of galaxy members used to reconstruct the dynamics mass profile have a mild effect on the predicted constraints.