Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 476, Issue 1, Pages L20-L24Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnrasl/sly024
Keywords
astroparticle physics; galaxies: clusters: general; dark matter; cosmology: theory
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Funding
- UK Science and Technology Facilities Council [ST/K501979/1, ST/L00075X/1, ST/L000768/1]
- BIS National E-infrastructure capital grant [ST/K00042X/1]
- STFC capital grants [ST/H008519/1, ST/K00087X/1]
- STFC DiRAC Operations grant [ST/K003267/1]
- Durham University
- EU Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant [747645]
- Gauss Centre for Supercomputing [GCS-HYDA/ID 44067]
- Royal Society
- US Department of Energy [de-sc0008541]
- Hellman Fellows Fund
- Spanish Ministry of Economy and Competitiveness (MINECO) [AYA2014-58308, RYC-2015-1807]
- STFC [ST/P000541/1, ST/H008519/1, ST/I00162X/1, ST/L00075X/1, ST/L000768/1, ST/K501979/1, ST/P000649/1] Funding Source: UKRI
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We present the first simulated galaxy clusters (M-200 > 10(14) M-circle dot) with both self-interacting dark matter (SIDM) and baryonic physics. They exhibit a greater diversity in both dark matter and stellar density profiles than their counterparts in simulations with collisionless dark matter (CDM), which is generated by the complex interplay between dark matter self-interactions and baryonic physics. Despite variations in formation history, we demonstrate that analytical Jeans modelling predicts the SIDM density profiles remarkably well, and the diverse properties of the haloes can be understood in terms of their different final baryon distributions.
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