Little evidence for entropy and energy excess beyond $r_{500}$ - An end to ICM preheating?

Abstract

Non-gravitational feedback affects the nature of the intra-cluster medium (ICM). X-ray cooling of the ICM and in situ energy feedback from AGN's and SNe as well as {\it preheating} of the gas at epochs preceding the formation of clusters are proposed mechanisms for such feedback. While cooling and AGN feedbacks are dominant in cluster cores, the signatures of a preheated ICM are expected to be present even at large radii. To estimate the degree of preheating, with minimum confusion from AGN feedback/cooling, we study the excess entropy and non-gravitational energy profiles upto $r_{200}$ for a sample of 17 galaxy clusters using joint data sets of {\it Planck} SZ pressure and {\it ROSAT/PSPC} gas density profiles. The canonical value of preheating entropy floor of $\gtrsim 300$ keV cm${}^2$, needed in order to match cluster scalings, is ruled out at $\approx 3\sigma$. We also show that the feedback energy of 1 keV/particle is ruled out at 5.2$\sigma$ beyond $r_{500}$. Our analysis takes both non-thermal pressure and clumping into account which can be important in outer regions. Our results based on the direct probe of the ICM in the outermost regions do not support any significant preheating.

arXiv comment6 pages, 4 figures, 1 table, Accepted in MNRAS Letters

References in corpus (41)

• Observational Evidence of AGN Feedback
• Chandra sample of nearby relaxed galaxy clusters: mass, gas fraction, and mass-temperature relation
• Heating Hot Atmospheres with Active Galactic Nuclei
• Effects of Galaxy Formation on Thermodynamics of the Intracluster Medium
• The Evolution of X-ray Clusters and the Entropy of the Intra Cluster Medium
• Gas entropy in a representative sample of nearby X-ray galaxy clusters (REXCESS): relationship to gas mass fraction
• The Birmingham-CfA cluster scaling project - III: entropy and similarity in galaxy systems
• Planck Early Results XI: Calibration of the local galaxy cluster Sunyaev-Zeldovich scaling relations
• Impact of Cluster Physics on the Sunyaev-Zel'dovich Power Spectrum
• Planck Intermediate Results. V. Pressure profiles of galaxy clusters from the Sunyaev-Zeldovich effect
• Physical Implications of the X-ray Properties of Galaxy Groups and Clusters
• On the Origin of Intracluster Entropy
• The gas distribution in the outer regions of galaxy clusters
• The baryon fraction of LambdaCDM haloes
• Cosmological Constraints from the Red-Sequence Cluster Survey
• On the Origin of Cores in Simulated Galaxy Clusters
• An Investigation into the Character of Pre-Explosion Core-Collapse Supernova Shock Motion
• Towards a Holistic View of the Heating and Cooling of the Intracluster Medium
• Gas clumping in galaxy clusters
• The X-ray/SZ view of the virial region. I. Thermodynamic properties
• X-ray and Sunyaev-Zel'dovich scaling relations in galaxy clusters
• Can AGN feedback break the self-similarity of galaxies, groups, and clusters?
• SNe heating and the chemical evolution of the intra-cluster medium
• Rhapsody-G simulations I: the cool cores, hot gas and stellar content of massive galaxy clusters
• The Cosmological Impact of Luminous TeV Blazars III: Implications for Galaxy Clusters and the Formation of Dwarf Galaxies
• The X-ray/SZ view of the virial region. II. Gas mass fraction
• Understanding Cluster Gas Evolution and Fine-Scale CMB Anisotropy with Deep Sunyaev-Zel'dovich Effect Surveys
• Formation of disk galaxies in preheated media: a preventative feedback model
• AGN heating, thermal conduction and Sunyaev-Zeldovich effect in galaxy groups and clusters
• The Cluster Gas Mass - Temperature Relation: Evidence for a High Level of Preheating
• Cosmological Simulations of the Preheating Scenario for Galaxy Cluster Formation: Comparison to Analytic Models and Observations
• Connecting Cluster Substructure in Galaxy Cluster Cores at z=0.2 With Cluster Assembly Histories
• On the Cluster Physics of Sunyaev-Zel'dovich and X-ray Surveys IV: Characterizing Density and Pressure Clumping due to Infalling Substructures
• The Entire Virial Radius of the Fossil Cluster RXJ1159+5531: I. Gas Properties
• The formation of entropy cores in non-radiative galaxy cluster simulations: SPH versus AMR
• The entropy core in galaxy clusters: numerical and physical effects in cosmological grid simulations
• Reproducing the entropy structure in galaxy groups
• Dark matter distribution in the merging cluster Abell 2163
• AGN feedback and entropy injection in galaxy cluster cores
• Probing Hot Gas in Galaxy Groups through the Sunyaev-Zeldovich Effect
• An Evolving Entropy Floor in the Intracluster Gas?

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