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Author: Jonathan I. Davies Publisher: Cambridge University Press ISBN: 9780521874663 Category : Science Languages : en Pages : 0
Book Description
Over the past century astronomers have discovered huge numbers of galaxies within our Universe by detecting the light from the stars they are made of. Now some astronomers believe that there are many other undetected galaxies that do not contain stars. IAU Symposium 244 saw heated debates surrounding the existence of these Dark Galaxies, discussing what a Dark Galaxy is and whether detections satisfy requirements for what one might be. Other contributions describe candidate Dark Galaxies, the baryon content of the Universe, and the discovery of the warm inter-galactic medium and low luminosity galaxies. Highlights include state-of-the-art observations of atomic hydrogen in the Universe that may be used to find Dark Galaxies, how gravitational lensing may be used to map the distribution of matter and inferences of dark structures, and the role of low luminosity galaxies in the formation of larger galaxies.
Author: Jonathan I. Davies Publisher: Cambridge University Press ISBN: 9780521874663 Category : Science Languages : en Pages : 0
Book Description
Over the past century astronomers have discovered huge numbers of galaxies within our Universe by detecting the light from the stars they are made of. Now some astronomers believe that there are many other undetected galaxies that do not contain stars. IAU Symposium 244 saw heated debates surrounding the existence of these Dark Galaxies, discussing what a Dark Galaxy is and whether detections satisfy requirements for what one might be. Other contributions describe candidate Dark Galaxies, the baryon content of the Universe, and the discovery of the warm inter-galactic medium and low luminosity galaxies. Highlights include state-of-the-art observations of atomic hydrogen in the Universe that may be used to find Dark Galaxies, how gravitational lensing may be used to map the distribution of matter and inferences of dark structures, and the role of low luminosity galaxies in the formation of larger galaxies.
Author: Ian F. Corbett Publisher: Cambridge University Press ISBN: 9780521768313 Category : Science Languages : en Pages : 548
Book Description
A complete record of the formal organisational and administrative proceedings of the XXVII General Assembly of the International Astronomical Union.
Author: D. Lynden-Bell Publisher: Springer Science & Business Media ISBN: 9400905653 Category : Science Languages : en Pages : 301
Book Description
The visible universe is a small perturbation on the material universe. Zwicky and Sinclair Smith in the 1930s gave evidence of invisible mass in the Coma and Virgo Clusters of Galaxies. Better optical data has only served to confound their critics and the X-ray data confirms that the gravitational potentials are many times larger than those predicted on the basis of the observed stars. Dynamical analyses of individual galaxies have found that significant extra mass is needed to explain their rotational velocities. On much larger scales, tens of megaparsecs, there is suggestive evidence that there is even more mass per unit luminosity. What is this non-luminous stuff of which the universe is made'? How much of it is there? Need there be only one kind of stuff? There are three basic possi bili ties:- all of it is ordinary (baryonic) matter, all of it is some other kind of (non-baryonic) matter, or some of it is baryonic and some is non-baryonic.
Author: J.M Overduin Publisher: CRC Press ISBN: 1420034510 Category : Science Languages : en Pages : 216
Book Description
Olbers' paradox states that given the Universe is unbounded, governed by the standard laws of physics, and populated by light sources, the night sky should be ablaze with light. Obviously this is not so. However, the paradox does not lie in nature but in our understanding of physics. A Universe with a finite age, such as follows from big-bang theor
Author: Krzysztof Bolejko Publisher: Cambridge University Press ISBN: 0521769140 Category : Science Languages : en Pages : 257
Book Description
Reviews developments in applications of inhomogeneous models to cosmology, for graduate students and academic researchers in astrophysics.
Author: Adriaan Blaauw Publisher: Springer Science & Business Media ISBN: 9401109788 Category : Science Languages : en Pages : 311
Book Description
This History has its origin in a suggestion, made in September 1990 by former IAU General Secretary Derek McNally, who felt "that a 75 year history of the Union was needed before the col lective memory of those who knew the Union before the Second World War vanished. It would then be a preparatory volume to a centennial history in 2019. " Indeed, of those who knew the Union that long ago, few are still with us. Six years ago, at Baltimore on August 2, 1988, listening and reminiscing at the Inaugural Ceremonies of the Union's 20th General Assembly, I realized that it was almost exactly half a century ago that, at the age of 24, I attended the Inaugurations at my "first" Assembly: on August 3, 1938 in Stockholm. Now, in 1994, this is almost 56 years ago, three quarters of the Union's age. Only vague recollections - no better than that -lead me back to this event, just before World War II. And so, this is not a history based on recollection, far from it. Recollection was helpful in that it allowed me, better perhaps than a younger author, to appreciate circumstances under which the letters and reports which form the basis for this History were written. The account is largely based on archival documents, collected from a wide variety of sources.
Author: George F. R. Ellis Publisher: Cambridge University Press ISBN: 0521381150 Category : Science Languages : en Pages : 637
Book Description
Surveying key developments and open issues in cosmology for graduate students and researchers, this book focuses on the general concepts and relations that underpin the standard model of the Universe. It also examines anisotropic and inhomogeneous models, and deeper issues, such as quantum cosmology and the multiverse proposal.
Author: Adam Jaworski Publisher: Psychology Press ISBN: 9780415346313 Category : Language Arts & Disciplines Languages : en Pages : 560
Book Description
The Discourse Reader collects in one volume the most important and influential articles on discourse analysis. Designed as a structured sourcebook and divided into clear sections, the book covers the foundations of modern discourse analysis and represents all of its contemporary methods and traditions. The second edition: has been revised and updated throughout includes six new articles from authors including Teun A. van Dijk, Judith Butler, and Gillian Rose includes 'discussion points' to help readers engage with key issues covers the foundations of modern discourse analysis and represents all of its contemporary methods and traditions. The second edition of The Discourse Reader remains an essential resource for all students of discourse analysis.
Author: Jonathan I. Davies
Author: Jonathan I. Davies
Author: Ian F. Corbett
Author: International Astronomical Union
Author: D. Lynden-Bell
Author: J.M Overduin
Author: Krzysztof Bolejko
Author: Adriaan Blaauw
Author: George F. R. Ellis
Author: Adam Jaworski
Author: Marc Lachièze-Rey