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

Bibcode
2018MNRAS.476L..20R
DOI
10.1093/mnrasl/sly024
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.; Kay, Scott T.; Schaller, Matthieu; Schaye, Joop
Referencia bibliográfica

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

Fecha de publicación:
5
2018
Número de autores
13
Número de autores del IAC
1
Número de citas
72
Número de citas referidas
65
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
En ejecución
Tipo
Con árbitro
Formación y Evolución de Galaxias (FYEG)
Física de Astropartículas
Galaxias
Materia oscura
Cosmología

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