The XMM cluster survey: Testing chameleon gravity using the profiles of clusters
| Autor: | H. Wilcox, Pedro T. P. Viana, John P. Stott, A. Kathy Romer, Ayumu Terukina, David Bacon, Julian A. Mayers, Maria Manolopoulou, Andrew R. Liddle, Ross Hood, Christopher J. Miller, Nicola Mehrtens, Kazuya Koyama, Matt Hilton, P. Rooney, Martin Sahlén, Chris A. Collins, Robert C. Nichol, Gong-Bo Zhao, Robert G. Mann |
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| Jazyk: | angličtina |
| Předmět: |
Cosmology and Gravitation
Cosmology and Nongalactic Astrophysics (astro-ph.CO) General relativity FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Gravitation weak [gravitational lensing] 0103 physical sciences Cluster (physics) 010303 astronomy & astrophysics Galaxy cluster Weak gravitational lensing STFC QB Physics 010308 nuclear & particles physics DB RN AKR KK and ARL are supported by the UK STFC grants ST/K00090/1 ST/K00090/1 STL000652/1 ST/L005573/1 and ST/L000644/1 Fifth force Astronomy RCUK Astronomy and Astrophysics Redshift Space and Planetary Science gravitation Dark energy astro-ph.CO galaxies: clusters [X-rays] Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Wilcox, H, Bacon, D, Nichol, R C, Rooney, P J, Terukina, A, Romer, A K, Koyama, K, Zhao, G-B, Hood, R, Mann, R G, Hilton, M, Manolopoulou, M, Sahlen, M, Collins, C A, Liddle, A R, Mayers, J A, Mehrtens, N, Miller, C J, Stott, J P & Viana, P T P 2015, ' The XMM Cluster Survey : testing chameleon gravity using the profiles of clusters ', Monthly Notices of the Royal Astronomical Society, vol. 452, no. 2, pp. 1171-1183 . https://doi.org/10.1093/mnras/stv1366 Wilcox, H, Bacon, D, Nichol, R C, Rooney, P J, Terukina, A, Romer, A K, Koyama, K, Zhao, G-B, Hood, R, Mann, R G, Hilton, M, Manolopoulou, M, Sahlen, M, Collins, C A, Liddle, A R, Mayers, J A, Mehrtens, N, Miller, C J, Stott, J P & Viana, P T P 2015, ' The XMM Cluster Survey : Testing chameleon gravity using the profiles of clusters ', Monthly Notices of the Royal Astronomical Society, vol. 452, no. 2, pp. 1171-1183 . https://doi.org/10.1093/mnras/stv1366 |
| ISSN: | 0035-8711 |
| DOI: | 10.1093/mnras/stv1366 |
| Popis: | 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 ($0.1 Comment: 14 pages, 7 figures |
| Databáze: | OpenAIRE |
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