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

Autor:	Robertson, Andrew, Massey, Richard, Eke, Vincent, Tulin, Sean, Yu, Hai-Bo, Bahé, Yannick, Barnes, David J., Bower, Richard G., Crain, Robert A., Vecchia, Claudio Dalla, Kay, Scott T., Schaller, Matthieu, Schaye, Joop
Rok vydání:	2017
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1093/mnrasl/sly024
Popis:	We present the first simulated galaxy clusters (M_200 > 10^14 Msun) 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. Comment: 6 pages, 1 figure, v2 matches accepted MNRAS: Letters version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1711.09096 Zobrazit plný text záznamu View this record from Arxiv