Cold fronts and shocks formed by gas streams in galaxy clusters

E. Zinger; A. Dekel; Y. Birnboim; D. Nagai; E. Lau; A. V. Kravtsov

doi:https://doi.org/10.1093/mnras/sty136

Cold fronts and shocks formed by gas streams in galaxy clusters

E. Zinger, A. Dekel, Y. Birnboim, D. Nagai, E. Lau, A. V. Kravtsov

Racah Institute of Physics

The Hebrew University of Jerusalem

Research output: Contribution to journal › Article › peer-review

Abstract

Cold fronts (CFs) and shocks are hallmarks of the complex intra-cluster medium (ICM) in galaxy clusters. They are thought to occur due to gas motions within the ICM and are often attributed to galaxy mergers within the cluster. Using hydro-cosmological simulations of clusters of galaxies, we show that collisions of inflowing gas streams, seen to penetrate to the very centre of about half the clusters, offer an additional mechanism for the formation of shocks and CFs in cluster cores. Unlike episodic merger events, a gas stream inflow persists over a period of several Gyr and it could generate a particular pattern of multiple CFs and shocks.

Original language	English
Pages (from-to)	56-70
Number of pages	15
Journal	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume	476
Issue number	1
DOIs	https://doi.org/10.1093/mnras/sty136
State	Published - 1 May 2018

Keywords

Galaxies: clusters: general
Galaxies: clusters: intracluster medium

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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https://doi.org/10.1093/mnras/sty136

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title = "Cold fronts and shocks formed by gas streams in galaxy clusters",

abstract = "Cold fronts (CFs) and shocks are hallmarks of the complex intra-cluster medium (ICM) in galaxy clusters. They are thought to occur due to gas motions within the ICM and are often attributed to galaxy mergers within the cluster. Using hydro-cosmological simulations of clusters of galaxies, we show that collisions of inflowing gas streams, seen to penetrate to the very centre of about half the clusters, offer an additional mechanism for the formation of shocks and CFs in cluster cores. Unlike episodic merger events, a gas stream inflow persists over a period of several Gyr and it could generate a particular pattern of multiple CFs and shocks.",

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T1 - Cold fronts and shocks formed by gas streams in galaxy clusters

AU - Zinger, E.

AU - Dekel, A.

AU - Birnboim, Y.

AU - Nagai, D.

AU - Lau, E.

AU - Kravtsov, A. V.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Cold fronts (CFs) and shocks are hallmarks of the complex intra-cluster medium (ICM) in galaxy clusters. They are thought to occur due to gas motions within the ICM and are often attributed to galaxy mergers within the cluster. Using hydro-cosmological simulations of clusters of galaxies, we show that collisions of inflowing gas streams, seen to penetrate to the very centre of about half the clusters, offer an additional mechanism for the formation of shocks and CFs in cluster cores. Unlike episodic merger events, a gas stream inflow persists over a period of several Gyr and it could generate a particular pattern of multiple CFs and shocks.

AB - Cold fronts (CFs) and shocks are hallmarks of the complex intra-cluster medium (ICM) in galaxy clusters. They are thought to occur due to gas motions within the ICM and are often attributed to galaxy mergers within the cluster. Using hydro-cosmological simulations of clusters of galaxies, we show that collisions of inflowing gas streams, seen to penetrate to the very centre of about half the clusters, offer an additional mechanism for the formation of shocks and CFs in cluster cores. Unlike episodic merger events, a gas stream inflow persists over a period of several Gyr and it could generate a particular pattern of multiple CFs and shocks.

KW - Galaxies: clusters: general

KW - Galaxies: clusters: intracluster medium

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M3 - مقالة

SN - 0035-8711

VL - 476

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EP - 70

JO - MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

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Cold fronts and shocks formed by gas streams in galaxy clusters

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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