期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 860, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/aac6d9
关键词
galaxies: clusters: general; galaxies: clusters: intracluster medium; gravitational lensing: weak
资金
- Ministry of Science and Technology of Taiwan [103-2112-M-001-030-MY3, 106-2628-M-001-003-MY3]
- Academia Sinica Investigator Award
- MAECI [ASI-INAF/I/023/12/0]
- MINECO/FEDER [AYA2015-64508-P]
- ASI [I/023/12/0]
- [ASI-INAFI/009/10/0]
- [NARO15 ASI-INAFI/037/12/0]
- [ASI 2015-046-R.0]
- [2017-14-H.0]
- [NSF/AST-1617022]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1617022] Funding Source: National Science Foundation
The Lambda CDM 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 Lambda CDM 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 Lambda CDM 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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