Large-scale Motions in the Perseus Galaxy Cluster

Abstract

By combining large-scale mosaics of ROSAT PSPC, XMM-Newton, and Suzaku X-ray observations, we present evidence for large-scale motions in the intracluster medium of the nearby, X-ray bright Perseus Cluster. These motions are suggested by several alternating and interleaved X-ray bright, low-temperature, low-entropy arcs located along the east-west axis, at radii ranging from ~10 kpc to over a Mpc. Thermodynamic features qualitatively similar to these have previously been observed in the centers of cool core clusters, and were successfully modeled as a consequence of the gas sloshing/swirling motions induced by minor mergers. Our observations indicate that such sloshing/swirling can extend out to larger radii than previously thought, on scales approaching the virial radius.

6 pages, 6 figures, accepted for publication in ApJ

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• The Physics of Galaxy Cluster Outskirts
• Cosmology and Astrophysics from Relaxed Galaxy Clusters I: Sample Selection
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• Large-scale inhomogeneities of the intracluster medium: improving mass estimates using the observed azimuthal scatter
• Constraining Gas Motions in the Intra-Cluster Medium
• X-ray exploration of the outskirts of the nearby Centaurus cluster using Suzaku and Chandra
• The growth of the galaxy cluster Abell 85: mergers, shocks, stripping and seeding of clumping
• Deep Chandra Observations of the Extended Gas Sloshing Spiral in A2029
• Measuring bulk flows of the intracluster medium in the Perseus and Coma galaxy clusters using XMM-Newton
• Hot Outflows in Galaxy Clusters
• High-resolution VLA low radio frequency observations of the Perseus cluster: radio lobes, mini-halo and bent-jet radio galaxies
• Deep Chandra observation and numerical studies of the nearest cluster cold front in the sky
• Discovery of a giant radio fossil in the Ophiuchus galaxy cluster
• What Do the Hitomi Observations Tell Us About the Turbulent Velocities in the Perseus Cluster? Probing the Velocity Field with Mock Observations
• The split in the ancient cold front in the Perseus cluster
• Radial Profile of the 3.55 keV line out to $R_{200}$ in the Perseus Cluster
• Metal distribution in sloshing galaxy clusters: the case of A496
• Gas bulk motion in the Perseus cluster measured with SUZAKU
• Simulating Astro-H Observations of Sloshing Gas Motions in the Cores of Galaxy Clusters
• Structures and components in galaxy clusters: observations and models
• Substructures associated with the sloshing cold front in the Perseus cluster
• Euclid: Early Release Observations -- The intracluster light and intracluster globular clusters of the Perseus cluster
• Applications for edge detection techniques using Chandra and XMM-Newton data: galaxy clusters and beyond
• Large scale gas sloshing out to half the virial radius in the strongest cool core REXCESS galaxy cluster, RXJ2014.8-2430
• LOFAR high-band antenna observations of the Perseus cluster
• Acoustic Disturbances in Galaxy Clusters
• Relative velocity of dark matter and barions in clusters of galaxies and measurements of their peculiar velocities
• A Deep X-Ray Look At Abell 2142 --- Viscosity Constraints From Kelvin-Helmholtz Eddies, A Displaced Cool Peak That Makes A Warm Core, And A Possible Plasma Depletion Layer
• Chandra View of the Ultra-Steep Spectrum Radio Source in Abell 2443: Merger Shock-Induced Compression of Fossil Radio Plasma?
• Metal-mass-to-light ratios of the Perseus cluster out to the virial radius
• The Lack of Non-Thermal Motions in Galaxy Cluster Cores
• Ultra-Steep Spectrum Radio `Jellyfish' Uncovered in Abell 2877
• The Dynamical Origin of Early-Type Dwarfs in Galaxy Clusters: A Theoretical Investigation
• Euclid: Early Release Observations -- Overview of the Perseus cluster and analysis of its luminosity and stellar mass functions
• VLA resolves unexpected radio structures in the Perseus cluster of galaxies
• The galaxy population within the virial radius of the Perseus cluster
• Thermodynamic evolution of the $z=1.75$ galaxy cluster IDCS J1426.5+3508
• Simulating the LOcal Web (SLOW) II: Properties of local galaxy clusters
• Line-of-sight gas sloshing in the cool core of Abell 907
• Is there an enormous cold front at the virial radius of the Perseus cluster?
• A Deep Redshift Survey of the Perseus Cluster: Spatial Distribution and Kinematics of Galaxies
• A shock near the virial radius of the Perseus Cluster
• Chandra measurements of gas homogeneity and turbulence at intermediate radii in the Perseus Cluster
• The Merger Dynamics of the Galaxy Cluster Abell 1775: New Insights from Chandra and XMM-Newton for a Cluster Simultaneously Hosting a WAT and a NAT Radio Sources
• Physics Beyond the Standard Model with Future X-ray Observatories: Projected Constraints on Very-Light Axion-Like Particles with $Athena$ and $AXIS$
• The SRG/eROSITA All-Sky Survey: Large-scale view of the Centaurus cluster
• Resilience of Sloshing Cold Fronts against Subsequent Minor Mergers
• Estimating the dark matter velocity anisotropy to the cluster edge
• Cluster outskirts and their connection to the cosmic web
• A Dynamically Driven, Universal Thermal Profile of Galaxy Groups and Clusters
• The Merger Dynamics of the X-ray Emitting Plasma in Clusters of Galaxies
• A Generative Model for Realistic Galaxy Cluster X-ray Morphologies
• MeerKAT discovery of GHz radio emission extending from Abell 3017 toward Abell 3016
• Signatures of large-scale cold fronts in the optically-selected merging cluster HSC J085024+001536
• Perseus cluster in its X-ray entirety with SRG/eROSITA. Merger and Radio-Uroboroses