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Published June 2017 | Submitted + Published
Journal Article Open

CLUMP-3D: three-dimensional lensing and multi-probe analysis of MACS J1206.2−0847, a remarkably regular cluster


Multi-wavelength techniques can probe the distribution and the physical properties of baryons and dark matter in galaxy clusters from the inner regions out to the peripheries. We present a full three-dimensional analysis combining strong and weak lensing, X-ray surface brightness and temperature, and the Sunyaev–Zel'dovich effect. The method is applied to MACS J1206.2−0847, a remarkably regular, face-on, massive, M_(200) = (1.1 ± 0.2) × 10^(15) M⊙ h^(−1), cluster at z = 0.44. The measured concentration, c_(200) = 6.3 ± 1.2, and the triaxial shape are common to haloes formed in a Λ cold dark matter scenario. The gas has settled in and follows the shape of the gravitational potential, which is evidence of pressure equilibrium via the shape theorem. There is no evidence for significant non-thermal pressure and the equilibrium is hydrostatic.

Additional Information

© 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2017 February 3. Received 2017 February 2; in original form 2016 November 12. Published: 07 February 2017. The authors thank M. Bonamigo and M. Limousin for stimulating discussions and C. Grillo for useful comments. SE, MM and MS acknowledge the financial contribution from contracts ASI-INAF I/009/10/0, PRIN-INAF 2012 'A unique dataset to address the most compelling open questions about X-Ray Galaxy Clusters', and PRIN-INAF 2014 'Glittering Kaleidoscopes in the sky: the multifaceted nature and role of galaxy clusters'. SE acknowledges the financial contribution from contracts NARO15 ASI-INAF I/037/12/0 and ASI 2015-046-R.0. MM acknowledges support from the Italian Ministry of Foreign Affairs and International Cooperation, Directorate General for Country Promotion, and from ASI via contract ASI/INAF/I/023/12/0. JS was supported by NSF/AST-1617022. KU acknowledges support from the Ministry of Science and Technology of Taiwan through grants MOST 103-2112-M-001-030-MY3 and MOST 103-2112-M-001-003-MY3. This research has made use of NASA's Astrophysics Data System (ADS) and of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.

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