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The diverse density profiles of galaxy clusters with self-interacting dark matter plus baryons

Robertson, Andrew; Massey, Richard; Eke, Vincent; Tulin, Sean; Yu, Hai-Bo; Bahé, Yannick; Barnes, David J; Bower, Richard G; Crain, Robert A; Dalla Vecchia, Claudio; Kay, Scott T; Schaller, Matthieu; Schaye, Joop

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Authors

Andrew Robertson

Richard Massey

Sean Tulin

Hai-Bo Yu

Yannick Bahé

David J Barnes

Richard G Bower

Robert A Crain

Claudio Dalla Vecchia

Scott T Kay

Matthieu Schaller

Joop Schaye



Abstract

We present the first simulated galaxy clusters (M200 > 1014 M⊙) 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.

Citation

Robertson, A., Massey, R., Eke, V., Tulin, S., Yu, H., Bahé, Y., …Schaye, J. (2018). The diverse density profiles of galaxy clusters with self-interacting dark matter plus baryons. Monthly Notices of the Royal Astronomical Society: Letters, 476(1), L20-L24. https://doi.org/10.1093/mnrasl/sly024

Journal Article Type Article
Acceptance Date Jan 30, 2018
Online Publication Date Feb 16, 2018
Publication Date May 1, 2018
Deposit Date Mar 29, 2018
Publicly Available Date Mar 29, 2024
Journal Monthly Notices of the Royal Astronomical Society: Letters
Electronic ISSN 1745-3933
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 476
Issue 1
Pages L20-L24
DOI https://doi.org/10.1093/mnrasl/sly024

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Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society: Letters ©: 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.






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