The XMM Cluster Survey:Testing chameleon gravity using the profiles of clusters

Wilcox, Harry and Bacon, David and Nichol, Robert C. and Rooney, Philip J. and Terukina, Ayumu and Romer, A. Kathy and Koyama, Kazuya and Zhao, Gong-Bo and Hood, Ross and Mann, Robert G. and Hilton, Matt and Manolopoulou, Maria and Sahlen, Martin and Collins, Chris A. and Liddle, Andrew R. and Mayers, Julian A. and Mehrtens, Nicola and Miller, Christopher J. and Stott, John P. and Viana, Pedro T. P. (2015) The XMM Cluster Survey:Testing chameleon gravity using the profiles of clusters. Monthly Notices of the Royal Astronomical Society, 452 (2). pp. 1171-1183. ISSN 0035-8711

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Abstract

The chameleon gravity model postulates the existence of a scalar field that couples with matter to mediate a fifth force. If it exists, this fifth force would influence the hot X-ray emitting gas filling the potential wells of galaxy clusters. However, it would not influence the clusters' weak lensing signal. Therefore, by comparing X-ray and weak lensing profiles, one can place upper limits on the strength of a fifth force. This technique has been attempted before using a single, nearby cluster (Coma, $z=0.02$). Here we apply the technique to the stacked profiles of 58 clusters at higher redshifts ($0.1z

Item Type:
Journal Article
Journal or Publication Title:
Monthly Notices of the Royal Astronomical Society
Additional Information:
14 pages, 7 figures
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1900/1912
Subjects:
ID Code:
83856
Deposited By:
Deposited On:
06 Jan 2017 13:44
Refereed?:
Yes
Published?:
Published
Last Modified:
12 Aug 2020 05:51