The velocity structure of the Intracluster Medium of the Centaurus cluster

Abstract

There are few direct measurements of ICM velocity structure, despite its importance for understanding clusters. We present a detailed analysis of the velocity structure of the Centaurus cluster using XMM-Newton observations. Using a new EPIC-pn energy scale calibration, which uses the Cu Ka instrumental line as reference, we are able to obtain velocity measurements with uncertainties down to $\Delta v\sim 79$ km/s. We create 2D spectral maps for the velocity, metallicity, temperature, density, entropy and pressure with an spatial resolution of 0.25'. We have found that the velocity structure of the ICM is similar to the velocity structure of the main galaxies while the cold fronts are likely moving in a plane perpendicular to our line of sight with low velocity. Finally, we have found a contribution from the kinetic component of <25\% to the total energetic budget for radius $>30$ kpc.

16 pages, 23 figures. This paper is part of a series on the ICM velocity structure using XMM-Newton observations. Related series papers: arXiv:2109.06213, arXiv:2303.17556

References in corpus (18)

• The Quiescent Intracluster Medium in the Core of the Perseus Cluster
• Turbulent Heating in Galaxy Clusters Brightest in X-rays
• The origin of cold fronts in the cores of relaxed galaxy clusters
• How AGN Jets Heat the Intracluster Medium -- Insights from Hydrodynamic Simulations
• A Very Deep Chandra Observation of the Galaxy Group NGC 5813: AGN Shocks, Feedback, and Outburst History
• The relation between gas density and velocity power spectra in galaxy clusters: high-resolution hydrodynamic simulations and the role of conduction
• Metal-rich multi-phase gas in M87: AGN-driven metal transport, magnetic-field supported multi-temperature gas, and constraints on non-thermal emission observed with XMM-Newton
• Chemical Enrichment RGS cluster sample (CHEERS): Constraints on turbulence
• Do sound waves transport the AGN energy in the Perseus Cluster?
• Measuring bulk flows of the intracluster medium in the Perseus and Coma galaxy clusters using XMM-Newton
• Characterization of ICM Temperature Distributions of 62 Galaxy Clusters with XMM-Newton
• Sound waves in the intracluster medium of the Centaurus cluster
• Measuring sloshing, merging and feedback velocities in the Virgo cluster
• Viscosity, pressure, and support of the gas in simulations of merging cool-core clusters
• Possible depletion of metals into dust grains in the core of the Centaurus cluster of galaxies
• Connecting turbulent velocities and magnetic fields in galaxy cluster simulations with active galactic nuclei jets
• X-ray Diagnostics of Thermal Conditions of the Hot Plasmas in the Centaurus Cluster
• Suppressed cooling and turbulent heating in the core of X-ray luminous clusters RXCJ1504.1-0248 and Abell 1664

Cited by in corpus (15)

• The bulk motion of gas in the core of the Centaurus galaxy cluster
• Investigating the turbulent hot gas in X-COP galaxy clusters
• Measuring the hot ICM velocity structure function using XMM-Newton observations
• Measuring the ICM velocity structure in the Ophiuchus cluster
• Chemical enrichment of the ICM within the Virgo cluster I: radial profiles
• Critical magnetic Reynolds number of the turbulent dynamo in collisionless plasmas
• Indications of an offset merger in Abell 3667
• O, Ne, Mg, and Fe Abundances in Hot X-Ray-emitting Halos of Galaxy Clusters, Groups, and Giant Early-type Galaxies with XMM-Newton RGS Spectroscopy
• Measuring the ICM velocity structure within the A3266 galaxy cluster
• The SRG/eROSITA All-Sky Survey: Large-scale view of the Centaurus cluster
• XRISM constraints on the velocity power spectrum in the Coma cluster
• AHKASH: a new Hybrid particle-in-cell code for simulations of astrophysical collisionless plasma
• Searching for rotation in X-COP galaxy clusters
• Toward mapping turbulence in the intracluster medium III. Constraints on the turbulent power spectrum with Athena/X-IFU
• High-resolution X-ray spectroscopy of clusters of galaxies