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

Barnes, David J.; Bahé, Yannick; Yu, Hai-Bo; Eke, Vincent; Tulin, Sean; Massey, Richard; Robertson, A.; Bower, Richard G.; Crain, Robert A.; Dalla Vecchia, C. et al.
Referencia bibliográfica

Monthly Notices of the Royal Astronomical Society: Letters, Volume 476, Issue 1, p.L20-L24

Fecha de publicación:
5
2018
Descripción
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.
Proyectos relacionados
Project Image
Astrofísica Numérica: Formación y Evolución de Galaxias

Entre las cuestiones fundamentales en Astronomía y Astrofísica están la formación y evolución de galaxias. Las escalas de tiempo y tamaño son tan astronómicas que su observación en galaxias individuales es imposible. Solo con el uso de simulaciones numéricas es posible entender la formación de estructuras cósmicas dentro del actual marco

Claudio
Dalla Vecchia