Heating versus Cooling in Galaxies and Clusters of Galaxies: Proceedings of the MPA/ESO/MPE/USM Joint Astronomy Conference held in Garching, Germany, 6-11 August 2006

ISBN-13: 9783642092572 / Angielski / Miękka / 2010 / 445 str.

Hans Böhringer;Gabriel W. Pratt;Alexis Finoguenov

Opis

The Universe would be a dull and dark place if the gaseous baryons did not cool, collapse, and form stars and galaxies. However, if this gas is allowed to cool unimpeded at the rate predicted from known atomic physics, in the context of a well-established cosmological model, the gaseous matter would form stars and galaxies with a high e?ciency, so that far more than the observed fraction of about 10 15% of the baryonic matter would be found in luminous stellar systems. Therefore, cooling must be damped or regulatedby heating processes, and observations show that this feedback is a widespread astrophysical phenomenon. The place where this cooling and feedback manifests itself most dram- ically is in the inner regions of the most massive Dark Matter halos found in our Universe, in the cores of galaxy clusters. The e?ect of cosmic co- ing in these objects was recognized in the mid-1970s, and the term cooling ?ow was introduced by Andy Fabian and colleagues at Cambridge as a p- sible explanation of the physical processes obtained in the central regions of clusters. The name refers to the fact that gas cooling in the inner regions is associated with a loss of central pressure, causing an in?ow of hot gas from larger radii."

Spis treści

Observations of Cooling Cores.- to Cluster Cooling Cores.- Star Formation and Feedback in Cooling Flows.- Cold Gas in Cluster Cores.- Statistics of X-ray Observables of Cooling Core and Non-cooling Core Clusters of Galaxies.- Cold Fronts in Cool Core Clusters.- Core structure of Intracluster Gas: Effects of Radiative Cooling on Core Sizes.- Investigating the Central Regions of the HIFLUGCS Clusters with Chandra.- Investigating Heating and Cooling within a Sample of Distant Clusters.- Lack of Cooling Flow Clusters at z > 0.5.- The XDCP Prospects of Finding Cooling Core Clusters at Large Lookback Times.- An XMM-Newton View of Three Clusters of Galaxies.- Exploring Massive Galaxy Clusters: XMM-Newton observations of two morphology unbiased samples at z ? 0.2 and z ? 0.3.- AGN-ICM Interaction in Cool Cores.- Heating and Cooling in the Perseus Cluster Core.- Hard X-ray emission from the core of the Perseus cluster and the thermal content of the radio bubbles.- Outbursts from Supermassive Black Holes: Shocks, Bubbles, and Filaments Around M87.- The Gaseous Atmosphere of M87 seen with XMM-Newton.- The XMM-Newton View of MS0735+7421: the Most Energetic AGN Outburst in a Galaxy Cluster.- Shock Heating by Nearby AGN.- Radio Source Heating in the ICM: The Example of Cygnus A.- A Deep Chandra Observation of A2052.- Chandra and XMM-Newton Observations of the Group of Galaxies HCG 62.- Radio Properties of Cavities in the ICM: Imprints of AGN Activity.- The Growth of Black Holes and Bulges at the Cores of Cooling Flows.- Tracing Ghost Cavities with Low Frequency Radio Observations.- High Sensitivity Low Frequency Radio Observations of cD Galaxies.- Radio Galaxies in Cooling Cores: Insights from a Complete Sample.- Supernova Feedback in Groups and Low-Mass Clusters of Galaxies.- Cooling Cores in Elliptical Galaxies.- Cooling and Feedback in Galaxies and Groups.- Morphological Signatures of AGN Feedback in the Hot Interstellar Medium of Normal Elliptical Galaxies.- Thermal Structure of the Hot ISM in Normal Ellipticals: Evidence for Local and Distributed AGN Heating.- Radio-Loud AGN Heating in Elliptical Galaxies and Clusters.- “Radio–active” Brightest Cluster Galaxies.- Modelling the AGN-ICM Interaction.- Review of heating mechanisms in clusters of galaxies.- Simulating the AGN-ICM Interaction.- Simulations of Jets in Dynamic Galaxy Cluster Atmospheres.- Can AGN and Radio Sources Reheat the Intracluster Medium?.- AGN Heating Through Cavities and Shocks.- The Difficulty of the Heating of Cluster Cooling Flows by Sound Waves and Weak Shocks.- The Lifecycle of Powerful AGN Outflows.- MHD Simulations of Clusters of Galaxies Including Radiative Cooling.- Quantifying “Feedback” in Cool Core and Non-Cool Core Clusters.- Buoyant Bubbles in the Virgo Cluster.- The Role of AGN Feedback and Gas Viscosity in Hydrodynamical Simulations of Galaxy Clusters.- Cold Feedback in Cooling–Flow Galaxy Clusters.- AGN Heating of Cooling Flow Clusters: Problems with 3D Hydrodynamic Models.- Heating Rate Profiles in Galaxy Clusters.- Entropy Structure.- Heating, Cooling, and Intracluster Entropy.- Entropy Generation in Merging Galaxy Clusters.- Entropy Profiles of Relaxed Galaxy Groups.- Observational Constraints on the ICM Temperature Enhancement by Cluster Mergers.- Effects of AGN and Mergers on the Cores of Galaxy Groups.- Chemical Abundances in Cool Cores.- Helium and Iron in X-ray Galaxy Clusters.- Tracing the Evolution in the Iron Content of the ICM.- Chemical Gradients in Galaxy Clusters and the Multiple Ways of Making a Cold Front.- Stochastic Gas motions in Galaxy Clusters.- Carbon and Nitrogen in the X-ray Emitting Hot Gas of M 87.- Optical and Sub-mm Observations of Cool Cores.- IFU Observations of H? in Brightest Central Galaxies of Cooling Flow Clusters.- Ionized Gas in Cluster Cores.- Observing the Cold Molecular Gas in Cooling Flow Clusters.- Formation of Cold Molecular Filaments in Cooling Flow Flusters.- Hyperfine Structure Radio Lines from Hot Gas in Elliptical Galaxies and Groups of Galaxies.- Numerical Simulations and Cosmological Applications.- Heating, Cooling and Enrichment in Clusters with Hydrodynamical Himulations.- Beyond the Cool Core: The Formation of Cool Core Galaxy Clusters.- AMR Simulations of the Cosmological Light Cone: SZE Surveys of the Synthetic Universe.- Modeling Chandra X-ray Observations of Galaxy Clusters using Cosmological Simulations.- Observing Metallicity in Simulated Clusters with X-MAS2.- N-body + Hydrodynamical Simulations of Merging Clusters of Galaxies: Comparison with 1E 0657-56.- Cosmological Structure Formation Shocks and Cosmic Rays in Hydrodynamical Simulations.- Determination of Cosmological Parameters using XMM-Newton Observations of the HIFLUGCS Cluster Sample.- Complex Physics in Cluster Cores: Showstopper for the Use of Clusters for Cosmology?.- Suzaku Observations.- New Results with the XIS Onboard Suzaku.- Suzaku Observations of A2218.- A Suzaku Observation of the Cluster of Galaxies A1060.- Initial Results from Suzaku Hard X-ray Observations of Abell 3376.- Heating vs. Cooling in Galaxy Formation.- A New Chemodynamical Tool to Study the Evolution of Galaxies in the Local Universe: a Quick and Accurate Numerical Technique to Compute the Gas Cooling Rate for any Chemical Composition.- A Heating Model for the Millennium Gas Run.- Powerful Radio Galaxies at z=2-3: Signposts of AGN Feedback in the Early Universe.- 2dF–SDSS LRG and QSO (2SLAQ) Survey: Evolution of the Most Massive Galaxies.- Conference Summary.- Heating vs. Cooling 2006: Conference Summary.

Blurb

The present volume is the record of a recent topical conference on the interplay between heating and cooling processes in galaxies and clusters of galaxies. The volume documents recent progress in our understanding of the dense central regions of these objects. Chapters detail recent results from multiwavelength observations and advances in numerical hydrodynamical simulations. An additional section covers new research on feedback and self-regulatory mechanisms during cosmic structure formation in general, and in galaxy formation in particular.

With reviews and technical papers written by leading scientists, this state-of-the art report will be a valuable and comprehensive source of reference for all astronomers and astrophysicists active in this field.