New Vision Of An Old Cluster A Untangling Coma Berenices

Author : Alain Mazure,Fabienne Casoli,Florence Durret,Daniel Gerbal
Publisher : World Scientific
Page : 246 pages
File Size : 46,5 Mb
Release : 1998-08-15
Category : Electronic
ISBN : 9789814545419

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New Vision Of An Old Cluster, A - Untangling Coma Berenices by Alain Mazure,Fabienne Casoli,Florence Durret,Daniel Gerbal Pdf

Together with Virgo, the Coma Berenices cluster is one of the most well-studied clusters at all wavelengths and in all aspects, from the Sunyaev-Zeldovich effect to star formation in galaxies. In a way, it is the prototype of rich clusters. Recent observational results, linked to the improvement of techniques such as X-ray and UV observations, along with multi-object spectroscopy, have shown that they could change our vision of this cluster. It is thus time for observers and theoreticians to confront all these new ideas and observations on the Coma cluster.The topics in this volume include: cosmological aspects of the Coma cluster, comparison with distant clusters; substructures; matter content and distribution; Sunyaev-Zeldovich effect; dynamical modelling, cluster dynamics; environmental effects on galaxies, star formation.

Author : Anne Collins Goodyear,Margaret A. Weitekamp
Publisher : Smithsonian Institution
Page : 527 pages
File Size : 47,7 Mb
Release : 2013-10-30
Category : Art
ISBN : 9781935623236

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Analyzing Art and Aesthetics by Anne Collins Goodyear,Margaret A. Weitekamp Pdf

This ninth volume of the Artefacts series explores how artists have responded to developments in science and technology, past and present. Rather than limiting the discussion to art alone, editors Anne Collins Goodyear and Margaret Weitekamp also asked contributors to consider aesthetics: the scholarly consideration of sensory responses to cultural objects. When considered as aesthetic objects, how do scientific instruments or technological innovations reflect and embody culturally grounded assessments about appearance, feel, and use? And when these objects become museum artifacts, what aesthetic factors affect their exhibition? Contributors found answers in the material objects themselves. This volume reconsiders how science, technology, art, and aesthetics impact one another.

Author : L. Feretti,I.M. Gioia,G. Giovannini
Publisher : Springer Science & Business Media
Page : 320 pages
File Size : 45,7 Mb
Release : 2006-04-18
Category : Science
ISBN : 9780306480966

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Merging Processes in Galaxy Clusters by L. Feretti,I.M. Gioia,G. Giovannini Pdf

Mergers are the mechanisms by which galaxy clusters are assembled through the hierarchical growth of smaller clusters and groups. Major cluster mergers are the most energetic events in the Universe since the Big Bang. Many of the observed properties of clusters depend on the physics of the merging process. These include substructure, shock, intra cluster plasma temperature and entropy structure, mixing of heavy elements within the intra cluster medium, acceleration of high-energy particles, formation of radio halos and the effects on the galaxy radio emission. This book reviews our current understanding of cluster merging from an observational and theoretical perspective, and is appropriate for both graduate students and researchers in the field.

Author : P Murdin
Publisher : CRC Press
Page : 5610 pages
File Size : 50,8 Mb
Release : 2001-01-01
Category : Science
ISBN : 9781000523034

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Encyclopedia of Astronomy & Astrophysics by P Murdin Pdf

In a unique collaboration, Nature Publishing Group and Institute of Physics Publishing have published the most extensive and comprehensive reference work in astronomy and astrophysics. This unique resource covers the entire field of astronomy and astrophysics and this online version includes the full text of over 2,750 articles, plus sophisticated search and retrieval functionality and links to the primary literature. The Encyclopaedia's authority is assured by editorial and advisory boards drawn from the world's foremost astronomers and astrophysicists. This first class resource is an essential source of information for undergraduates, graduate students, researchers and seasoned professionals, as well as for committed amateurs, librarians and lay people wishing to consult the definitive astronomy and astrophysics reference work.

Author : Carlo Rovelli
Publisher : Walter de Gruyter GmbH & Co KG
Page : 216 pages
File Size : 46,5 Mb
Release : 2015-02-17
Category : Science
ISBN : 9783110383645

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General Relativity: The most beautiful of theories by Carlo Rovelli Pdf

Generalising Newton's law of gravitation, general relativity is one of the pillars of modern physics. While applications in the beginning were restricted to isolated effects such as a proper understanding of Mercury's orbit, the second half of the twentieth century saw a massive development of applications. These include cosmology, gravitational waves, and even very practical results for satellite based positioning systems as well as different approaches to unite general relativity with another very successful branch of physics – quantum theory. On the occassion of general relativity's centennial, leading scientists in the different branches of gravitational research review the history and recent advances in the main fields of applications of the theory, which was referred to by Lev Landau as “the most beautiful of the existing physical theories”. Contributions from: Andy C. Fabian, AnthonyL. Lasenby, Astrophysical black Holes Neil Ashby, GNSS and other applications of General Relativity Gene Byrd, Arthur Chernin, Pekka Teerikorpi, Mauri Vaaltonen,Observations of general Relativity at strong and weaks limits Ignazio Ciufolini, General Relativity and dragging of inertial frames Carlo Rovelli, The strange world of quantum spacetime

Author : Stéphane Colombi,Yannick Mellier,Brigitte Raban
Publisher : Atlantica Séguier Frontières
Page : 472 pages
File Size : 52,8 Mb
Release : 1998
Category : Cosmic background radiation
ISBN : 2863322419

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Wide Field Surveys in Cosmology by Stéphane Colombi,Yannick Mellier,Brigitte Raban Pdf

Author : R. Lieu,Jonathan Mittaz
Publisher : Springer Science & Business Media
Page : 200 pages
File Size : 46,6 Mb
Release : 2013-11-09
Category : Science
ISBN : 9781402025648

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Soft X-Ray Emission from Clusters of Galaxies and Related Phenomena by R. Lieu,Jonathan Mittaz Pdf

Since the discovery of the cluster soft excess (CSE) over eight years ago, its properties and origin have been the subject of debate. With the recent launch of new missions such as XMM-Newton and FUSE, we are beginning to answer some of the complex issues regarding the phenomenon. This conference proceedings is an attempt to bring together the latest research results and covers both observational and theoretical work on the CSE and related topics. One of the main topics is the possible relationship between the CSE and the warm-hot intergalactic medium (WHIM), which is believed to harbor 50% of the baryons in the near Universe. New data from both XMM-Newton and FUSE have indicated a possible causal link between the WHIM and CSE. Evidence is based on the apparent detection of O VII emission lines in the soft excess spectrum of the outskirts of several clusters, as well as reports of absorption lines at local and higher redshifts (seen in the spectra of distant sources) as signature of the WHIM. However, while there has been considerable optimism in attributing a substantial fraction of the cluster soft excess flux to WHIM emission, other work shows that, for example, the amount of WHIM material predicted by theoretical simulations falls way short of that necessary to account for the CSE. Other work indicates that at the cores of some cluster this excess emission is so strong, it is impossible to invoke the thermal model without at the same time enlisting radically new physics. Thus alternative interpretations involving non-thermal processes are also reported and being pursued in earnest. Whatever the origin of CSE may turn out to be, results in this book show that it has become beyond reasonable doubt that the phenomenon itself is observationally established. This book reports the scientific progress made by bringing together scientists from a wide range of disciplines. It clearly demonstrates the importance of such meetings and participants if we are to solve this puzzle. This volume is aimed at scientists and graduate students in astronomy who want to learn about the latest results on cluster soft excess observations and theoretical implications.

Author : Marc Sauvage,Grazyna Stasinska,D. Schaerer
Publisher : Springer Science & Business Media
Page : 563 pages
File Size : 51,8 Mb
Release : 2013-06-29
Category : Science
ISBN : 9789401733113

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The Evolution of Galaxies by Marc Sauvage,Grazyna Stasinska,D. Schaerer Pdf

Galaxies have a history. This has become clear from recent sky surveys which have shown that distant galaxies, formed early in the life of the Universe, differ from the nearby ones. New observational windows at ultraviolet, infrared and millimetric wavelengths (provided by ROSAT, IRAM, IUE, IRAS, ISO) have revealed that galaxies contain a wealth of components: very hot gas, atomic hydrogen, molecules, dust, dark matter ... A significant advance is expected due to new instruments (VLT, FIRST, XMM) which will allow one to explore the most distant Universe. Three Euroconferences have been planned to punctuate this new epoch in galactic research, bringing together specialists in various fields of Astronomy.

Author : Raymond F Bonn
Publisher : Lulu.com
Page : 687 pages
File Size : 41,7 Mb
Release : 2011-04-01
Category : Science
ISBN : 9780578026251

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Cosmological Effects of Scattering in the Intergalactic Medium by Raymond F Bonn Pdf

This book provides an explanation of electromagnetic scattering effects in the intergalactic medium that produce what have been misinterpreted as 'evolutionary' effects. It accounts for a variety of cosmological phenomena from spectroscopic redshifts to microwave background radiation. These have variously been attributed by the standard cosmological model to an origin in a 'big bang', 'dark matter', and mysterious 'vacuum energy'. This scattering model provides a viable stationary state alternative to the established view of the universe with predictions that more precisely match observation without ad hoc assumptions.

Author : Veronique Cayatte,Bruno Guiderdoni,Francois Hammer,Trinh Xuan Thuan,J Tran Thanh Van
Publisher : World Scientific
Page : 494 pages
File Size : 52,8 Mb
Release : 2000-07-17
Category : Electronic
ISBN : 9789814542777

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Building Galaxies: From The Primordial Universe To The Present, Procs Of The Xixth Rencontres De Moriond by Veronique Cayatte,Bruno Guiderdoni,Francois Hammer,Trinh Xuan Thuan,J Tran Thanh Van Pdf

These proceedings provide a summary of the state-of-the-art in the understanding of physical processes which control galaxy formation. Many topics are discussed which present the latest observational results: dust extinction, the role of AGNs in the formation of massive galaxies, etc. How future instruments such as NGST, ALMA, FIRST, KMT and SKAI can help to resolve these questions is also addressed. The book will serve as a useful reference in the field for many years to come.

Author : Kristin Chiboucas
Publisher : Unknown
Page : 604 pages
File Size : 50,5 Mb
Release : 2003
Category : Electronic
ISBN : UOM:39015057023270

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The Faint-end of the Cluster Galaxy Luminosity Function by Kristin Chiboucas Pdf

Author : Jelle Kaastra
Publisher : Springer Science & Business Media
Page : 418 pages
File Size : 46,5 Mb
Release : 2008-05-01
Category : Science
ISBN : 9780387788753

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Clusters of Galaxies: Beyond the Thermal View by Jelle Kaastra Pdf

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).

Author : Astronomische Gesellschaft (Germany). Meeting
Publisher : Unknown
Page : 288 pages
File Size : 43,9 Mb
Release : 2000
Category : Astrophysics
ISBN : STANFORD:36105025357281

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New Astrophysical Horizons by Astronomische Gesellschaft (Germany). Meeting Pdf

Author : Mark Yashar
Publisher : Unknown
Page : 274 pages
File Size : 40,6 Mb
Release : 2009
Category : Electronic
ISBN : UCAL:X83584

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Topics in Microlensing and Dark Energy by Mark Yashar Pdf

Author : Anonim
Publisher : Unknown
Page : 744 pages
File Size : 51,6 Mb
Release : 2009
Category : Astronomy
ISBN : UCSD:31822036916625

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Astronomy and Astrophysics by Anonim Pdf