Clusters of Galaxies Beyond the Thermal View

J.C. Kempner, E.L. Blanton, T.E. Clarke et al., in The Riddle of Cooling Flows in Galaxies and Clusters of Galaxies, ed. by T. Reiprich, J. Kempner, N. Soker (2004). Published electronically at http://www.astro. virginia.edu/coolflow/ ...

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Author: Jelle Kaastra

Publisher: Springer Science & Business Media

ISBN: 9780387788753

Category: Science

Page: 418

View: 873

The existence of soft excess emission originating from clusters of galaxies, de ned as em- sion detected below 1 keV in excess over the usual thermal emission from hot intracluster gas (hereafter the ICM) has been claimed since 1996. Soft excesses are particularly - portant to detect because they may (at least partly) be due to thermal emission from the Warm-Hot Intergalactic Medium, where as much as half of the baryons of the Universe could be. They are therefore of fundamental cosmological importance. Soft excess emission has been observed (and has also given rise to controversy) in a number of clusters, mainly raising the following questions: (1) Do clusters really show a soft excess? (2) If so, from what spatial region(s) of the cluster does the soft excess or- inate? (3) Is this excess emission thermal, originating from warm-hot intergalactic gas (at 6 temperatures of?10 K), or non-thermal, in which case several emission mechanisms have been proposed. Interestingly, some of the non-thermal mechanisms suggested to account for soft excess emission can also explain the hard X-ray emission detected in some clusters, for example by RXTE and BeppoSAX (also see Petrosian et al. 2008—Chap. 10, this issue; Rephaeli et al. 2008—Chap. 5, this issue).

A Pan Chromatic View of Clusters of Galaxies and the Large Scale Structure

The radio emission in clusters can also originate from individual galaxies, which have been imaged over the last decades with sensitive radio telescopes. The emission from radio galaxies often extends well beyond their optical ...

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Author: Manolis Plionis

Publisher: Springer Science & Business Media

ISBN: 9781402069406

Category: Science

Page: 476

View: 953

The reviews presented in this volume cover a huge range of cluster of galaxies topics. Readers will find the book essential reading on subjects such as the physics of the ICM gas, the internal cluster dynamics, and the detection of clusters using different observational techniques. The expert chapter authors also cover the huge advances being made in analytical or numerical modeling of clusters, weak and strong lensing effects, and the large scale structure as traced by clusters.

Solar Stellar and Galactic Connections between Particle Physics and Astrophysics

... a different power law index, is also suggested at very large scales (c.f. figure 5 in [96]), from galactic halos to the environments outside galaxy clusters, over ∼ 4 orders of magnitude in thermal gas density. This view [100] is, ...

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Author: Alberto Carramiñana

Publisher: Springer Science & Business Media

ISBN: 9781402055751

Category: Science

Page: 304

View: 563

This book collects extended and specialized reviews on topics linking astrophysics and particle physics at a level between a graduate student and a young researcher. The book also includes three reviews on observational techniques used in forefront astrophysics and short articles on research performed in Latin America. The reviews, updated and written by specialized researchers, describe the state of the art in the related research topics.

Proceedings of the Sixth International Workshop on Relativistic Aspects of Nuclear Physics

... environments outside galaxy clusters, over ~ 4 orders of magnitude in thermal gas density. This view (Vallee, 1997) is, however, still controversial (Kronberg, 1994b). In fact, magnetic fields in galaxy clusters are roughly ~ 1 puG, ...

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Author: Takeshi Kodama

Publisher: World Scientific

ISBN: 9789810247157

Category: Science

Page: 478

View: 851

This volume deals mainly with physics related to the RHIC. It contains one of the first reports on the results of RHIC experiments.

Relativistic Aspects of Nuclear Physics

... environments outside galaxy clusters, over ~ 4 orders of magnitude in thermal gas density. This view (Vallee, 1997) is, however, still controversial (Kronberg, 1994b). In fact, magnetic fields in galaxy clusters are roughly ~ 1 puG, ...

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Author: Takeshi Kodama

Publisher: World Scientific

ISBN: 9789814490399

Category: Science

Page: 476

View: 381

This volume deals mainly with physics related to the RHIC. It contains one of the first reports on the results of RHIC experiments. Contents:First Physics Results from STAR (J Harris)The Origin of the Highest Energy Cosmic Rays (A V Olinto)Ultra-High Energy Cosmic Rays: Current Data and Propagation Scenarios (G M Tanco)Are High Energy Heavy Ion Collisions Similar to a Little Bang, or Just a Very Nice Firework? (E V Shuryak)Event-by-Event Analysis of Ultra-Relativistic Heavy-Ion Collisions in Smoothed Particle Hydrodynamics (T Osada et al.)Hadronic Form Factors from QCD Sum Rules (M Nielsen et al.)Light Front Nuclear Theory and the HERMES Effect (G A Miller)Charm Meson Interactions in Hadronic Matter (C M Ko & Z Lin)Effective Nucleon–Nucleon Interaction in the RPA (E F Batista et al.)Asymmetries in Heavy Meson Production in the Meson Cloud Model Scenario (F Carvalho et al.)The Relativistic Quasi-Particle Random Phase Approximation (C de Conti et al.)Quasi-Deuteron Pairing and Isospin Asymmetry (B F Haas et al.)Quark Degrees of Freedom in Compact Stars (G F Marranghello et al.)Finite Temperature Nucleon Mass in QMC Model (P K Panda & G Krein)The Fuzzy Bag Model Revisited (F Pilotto et al.)Simplifying Relativistic Density Limits for Nuclear Surface Properties in Walecka Model (R R da Silva & M L Cescato)Neutron Stars in Nonlinear Coupling Models (A R Taurines et al.)Multiplicity of Pions from a Heated Interacting Gas (O K Vorov & M S Hussein)and other papers Readership: Researchers in relativistic nuclear physics, cosmology, high energy astrophysics and particle physics. Keywords:

Heating versus Cooling in Galaxies and Clusters of Galaxies

view. of. MS0735+7421. MS0735 was observed by XMM–Newton in April 2005 for a total clean exposure time of about 50 ksec ... 1, top) as the sum of ambient cluster emission and a hot thermal plasma, each with a characteristic temperature.

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Author: Hans Böhringer

Publisher: Springer Science & Business Media

ISBN: 9783540734840

Category: Science

Page: 445

View: 135

This volume documents recent developments that have advanced our understanding of the heating and cooling mechanisms in galaxies and galaxy clusters. Chapters detail results from multi-wavelength observations and advances in numerical hydrodynamical simulations. An additional section covers new research findings on feedback and self-regulatory mechanisms during cosmic structure formation in general and in galaxy formation in particular.

Literature 1976 Part 2

160.028 The structure of clusters of galaxies from observational point of view. ... It seems highly probable that the X radiation from these clusters is just the thermal bremsstrahlung of this gas, and that previous inverse Compton ...

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Author: S. Böhme

Publisher: Springer Science & Business Media

ISBN: 9783662123072

Category: Science

Page: 862

View: 207

Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is de voted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, com pared to which our system of accumulating abstracts for about six months offers the advantage of greater convenience for the user. Volume 18 contains literature published in 1976 and received before March 1, 1977; some older liter ature which was received late and which is not recorded in earlier volumes is also included.

Clusters of Galaxies Volume 3 Carnegie Observatories Astrophysics Series

Probes of Cosmological Structure and Galaxy Luis C. Ho, John S. Mulchaey, Alan Dressler, Augustus Oemler ... The growth of X - ray astronomy has provided the community with a steadily more detailed view of the intracluster medium in ...

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Author: Luis C. Ho

Publisher: Cambridge University Press

ISBN: 0521755778

Category: Science

Page: 408

View: 874

Clusters of galaxies are the largest and most massive collapsed systems in the Universe, and as such they are valuable probes of cosmological structure and galaxy evolution. The advent of extensive galaxy surveys, large ground-based facilities, space-based missions such as HST, Chandra and XMM-Newton and detailed numerical simulations makes a particularly exciting time to be involved in this field. The review papers in this volume span a comprehensive range of research in this area, including theoretical expectations for the growth of structure, survey techniques to identify clusters, metal production and the intracluster medium, galaxy evolution in the cluster environment and group-cluster connections. With contributions from leading authorities in the field, this volume is appropriate both as an introduction to this topic for physics and astronomy graduate students, and as a reference source for professional research astronomers.

Scientific and Technical Aerospace Reports

Optical emission from cooling flows in distant x ray clusters of galaxies N91-14169 COOLING FLOWS ( ASTROPHYSICS ) ISM ... N91-13992 CORROSION RESISTANCE Research and development of a ceramic fiber composite heat exchanger ( DE90-017250 ) ...

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Author:

Publisher:

ISBN: MINN:30000001832819

Category: Aeronautics

Page:

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Clusters of Galaxies

Proceedings of the Clusters of Galaxies Meeting, Baltimore, 1989 May 15-17 William R. Oegerle, ... and the “break” in the thermal Bremsstrahlung spectrum occurs at E = kTga,, so data is required beyond the break in order to detect it).

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Author: William R. Oegerle

Publisher: Cambridge University Press

ISBN: 9780521384629

Category: Science

Page: 415

View: 103

Collected in this volume are the review papers from the Space Telescope Science Institute symposium on Clusters of Galaxies held in May 1989. Fifteen experts in the field have presented summaries of our current understanding of the formation and evolution of clusters and their constituent galaxies. Subjects covered include the existence and importance of subclustering, models of the evolution of clusters and the intracluster medium, the effect of the cluster environment on galaxies, observations of high redshift clusters, and the use of clusters as tracers of large scale structure. This book provides a timely focus for future observational and theoretical work on clusters of galaxies.