Sereno, Mauro and Umetsu, Keiichi and Ettori, Stefano and Sayers, Jack and Chiu, I-Non and Meneghetti, Massimo and Vega-Ferrero, Jesús and Zitrin, Adi (2018) CLUMP-3D: Testing ΛCDM with Galaxy Cluster Shapes. Astrophysical Journal Letters, 860 (1). Art. No. L4. ISSN 2041-8213. doi:10.3847/2041-8213/aac6d9. https://resolver.caltech.edu/CaltechAUTHORS:20180607-104511392
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Abstract
The ΛCDM model of structure formation makes strong predictions on the concentration and shape of dark matter (DM) halos, which are determined by mass accretion processes. Comparison between predicted shapes and observations provides a geometric test of the ΛCDM model. Accurate and precise measurements needs a full three-dimensional (3D) analysis of the cluster mass distribution. We accomplish this with a multi-probe 3D analysis of the X-ray regular Cluster Lensing and Supernova survey with Hubble (CLASH) clusters combining strong and weak lensing, X-ray photometry and spectroscopy, and the Sunyaev–Zel'dovich effect (SZe). The cluster shapes and concentrations are consistent with ΛCDM predictions. The CLASH clusters are randomly oriented, as expected given the sample selection criteria. Shapes agree with numerical results for DM-only halos, which hints at baryonic physics being less effective in making halos rounder.
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| Additional Information: | © 2018 The American Astronomical Society. Received 2018 March 30; revised 2018 May 5; accepted 2018 May 18; published 2018 June 7. The authors thank Rossella Cassano and Gianfranco Brunetti for useful discussions, and Gustavo Yepes for supplying the MUSIC-2 simulations performed at the Barcelona Supercomputing Center, Spain. M.S. and S.E. acknowledge support from the contracts ASI-INAF I/009/10/0, NARO15 ASI-INAF I/037/12/0, ASI 2015-046-R.0 and ASI-INAF n.2017-14-H.0. K.U. acknowledges support from the Ministry of Science and Technology of Taiwan (grants 103-2112-M-001-030-MY3 and 106-2628-M-001-003-MY3) and from the Academia Sinica Investigator Award. J.S. was supported by NSF/AST-1617022. M.M. acknowledges support from MAECI and contracts ASI-INAF/I/023/12/0 and ASI n. I/023/12/0. J.V.-F. was supported by AYA2015-64508-P (MINECO/FEDER). | ||||||||||||||||||||||||
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| Subject Keywords: | galaxies: clusters: general – galaxies: clusters: intracluster medium – gravitational lensing: weak | ||||||||||||||||||||||||
| Issue or Number: | 1 | ||||||||||||||||||||||||
| DOI: | 10.3847/2041-8213/aac6d9 | ||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20180607-104511392 | ||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20180607-104511392 | ||||||||||||||||||||||||
| Official Citation: | Mauro Sereno et al 2018 ApJL 860 L4 | ||||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||
| ID Code: | 86882 | ||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||||||||||||
| Deposited On: | 07 Jun 2018 18:29 | ||||||||||||||||||||||||
| Last Modified: | 15 Nov 2021 20:43 |
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