Problems Concerning the Extragalactic Distance Scale PDF Download
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Author: George O. Abell
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Author: George O. Abell
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Author: Victoria Scowcroft
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Space Telescope Science Institute (U.S.). Symposium
Publisher: Cambridge University Press
ISBN: 9780521591645
Category : Science
Languages : en
Pages : 354
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Book Description
One of the hottest debates in astronomy and cosmology today concerns the value of the Hubble constant. This constant is of paramount importance since it fixes the size and age of the Universe. At a symposium at the Space Telescope Science Institute, experts from around the world presented the latest results from a plethora of techniques for determining the Hubble constant. The value has always been controversial, but at this meeting experts' results agreed for the first time to within about 20%. Based on the meeting, this book presents twenty-three specially written review articles. They provide a comprehensive account of the Hubble-constant debate with the latest results from gravitational lensing, supernovae and novae, the Tully-Fisher relation, the Sunyaev-Zeldovich effect, globular clusters, planetary nebulae, light echoes, and the Hubble Space Telescope Key Project. This timely volume provides a standard reference for graduate students and researchers in astronomy and cosmology.
Author: Michael Solarz
Publisher:
ISBN:
Category : Galaxies
Languages : en
Pages : 233
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Author: Danielle Alloin
Publisher: Springer Science & Business Media
ISBN: 9783540201281
Category : Science
Languages : en
Pages : 334
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Book Description
This volume reviews the current status with respect to both theory and observation of the extragalactic distance scale. A sufficient accuracy is required both for a precise determination of the cosmological parameters and also in order to achieve a better understanding of physical processes in extragalactic systems. The "standard candles", used to set up the extragalactic distance scale, reviewed in this book include cepheid variables, RR Lyrae variables, novae, Type Ia and Type II supernovae as well as globular clusters and planetary nebulae.
Author: L. Bottinelli
Publisher:
ISBN: 9789516429291
Category :
Languages : en
Pages :
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Author: Gregory Bothun
Publisher: CRC Press
ISBN: 9780748406456
Category : Science
Languages : en
Pages : 324
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Book Description
In recent years an enormous amount of cosmological data has come from well known projects such as the Hubble Space Telescope (HST) and the Cosmic Background Explorer (COBE). This book explains and makes sense of this vast array of new observational data in terms of its impact on current cosmological models. With new theories and a plethora of data feeding cosmology in the 1990s, Gregory Bothun sets about the task of re- assessing our cosmological models. He outlines exactly what the latest observations are, and how they should be seen as either consistent or in conflict with current cosmogenic scenarios. In this search for a reconciliation of current data with competing theory, he explains how Einstein's idea of a cosmological constant has now become a viable hypothesis. This authoritative text should be valuable to all those studying cosmological observations at advanced undergraduate or beginning graduate level. Bothun draws a path through cosmology by defining a trajectory that is based on the data. This should also provide a framework for professional cosmologists and related readers in physics as it presents a solid observational foundation which either supports or conflicts with present theory. The book is illustrated including many CCD images of galaxies. Given the rapidly changing nature of the field, this book is supported by a World Wide Web site of supplementary material that is designed to readily update the material in the book.
Author:
Publisher:
ISBN:
Category : Extragalactic distances
Languages : en
Pages : 90
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Author: Gary L. Herstein
Publisher: Walter de Gruyter
ISBN: 3110328267
Category : Philosophy
Languages : en
Pages : 215
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Book Description
Einstein's General Theory of Relativity links the metrical structure of the cosmic order (or "cosmology") to the contingent distributions of matter and energy throughout the universe, one of the chief areas of investigation in astrophysics. However, presently we have neither devised nor discovered system of uniform relations whereby we can make our cosmological measurements intelligible. This is "the measurement problem of cosmology." Using both historical ideas (such as A.N. Whitehead's work in the 1920s) and contemporary evidence and theories, argue that the measurement problem has neither been fully understood nor rightly interpreted. With better grasp of this problem, such as am attempting to provide, the prospects for solution look brighter.
Author: Sidney Van den Bergh
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 408
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