The Light Dark Universe
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The Light Dark Universe
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Author : Paul S. Wesson
language : en
Publisher: World Scientific
Release Date : 2008
The Light Dark Universe written by Paul S. Wesson and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Science categories.
To the eyes of the average person and the trained scientist, the night sky is dark, even though the universe is populated by myriads of bright galaxies. Why this happens is a question commonly called Olbers'' Paradox, and dates from at least 1823. How dark is the night sky is a question which preoccupies astrophysicists at the present. The answer to both questions tells us about the origin of the universe and the nature of its contents OCo luminous galaxies like the Milky Way, plus the dark matter between them and the mysterious dark energy which appears to be pushing everything apart. In this book, the fascinating history of Olbers'' Paradox is reviewed, and the intricate physics of the light/dark universe is examined in detail. The fact that the night sky is dark (a basic astronomical observation that anybody can make) turns out to be connected with the finite age of the universe, thereby confirming some event like the Big Bang. But the space between the galaxies is not perfectly black, and data on its murkiness at various wavelengths can be used to constrain and identify its unseen constituents.
The Light Dark Universe
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Author :
language : en
Publisher:
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The Light Dark Universe written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Particles In The Dark Universe
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Author : Yann Mambrini
language : en
Publisher: Springer Nature
Release Date : 2021-09-02
Particles In The Dark Universe written by Yann Mambrini and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-09-02 with Science categories.
This book provides a comprehensive and instructive coverage of particle physics in the early universe, in a logical way. It starts from the thermal history of the universe by investigating some of the main arguments such as Big Bang nucleosynthesis, the cosmic microwave background (CMB) and the inflation, before treating in details the direct and indirect detection of dark matter and then some aspects of the physics of neutrino. Following, it describes possible candidates for dark matter and its interactions. The book is targeted at theoretical physicists who deal with particle physics in the universe, dark matter detection and astrophysical constraints, and at particle physicists who are interested in models of inflation or reheating. This book offers also material for astrophysicists who work with quantum field theory computations. All that is useful to compute any physical process is included: mathematical tables, all the needed functions for the thermodynamics of early universe and Feynman rules. In light of this, this book acts as a crossroad between astrophysics, particle physics and cosmology.
Dark Sky Dark Matter
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Author : J.M Overduin
language : en
Publisher: CRC Press
Release Date : 2002-09-01
Dark Sky Dark Matter written by J.M Overduin and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-09-01 with Science categories.
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
A Ray Of Light In A Sea Of Dark Matter
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Author : Charles Keeton
language : en
Publisher: Rutgers University Press
Release Date : 2014-04-30
A Ray Of Light In A Sea Of Dark Matter written by Charles Keeton and has been published by Rutgers University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-04-30 with Science categories.
What’s in the dark? Countless generations have gazed up at the night sky and asked this question—the same question that cosmologists ask themselves as they study the universe. The answer turns out to be surprising and rich. The space between stars is filled with an exotic substance called “dark matter” that exerts gravity but does not emit, absorb, or reflect light. The space between galaxies is rife with “dark energy” that creates a sort of cosmic antigravity causing the expansion of the universe to accelerate. Together, dark matter and dark energy account for 95 percent of the content of the universe. News reporters and science journalists routinely talk about these findings using terms that they assume we have a working knowledge of, but do you really understand how astronomers arrive at their findings or what it all means? Cosmologists face a conundrum: how can we study substances we cannot see, let alone manipulate? A powerful approach is to observe objects whose motion is influenced by gravity. Einstein predicted that gravity can act like a lens to bend light. Today we see hundreds of cases of this—instances where the gravity of a distant galaxy distorts our view of a more distant object, creating multiple images or spectacular arcs on the sky. Gravitational lensing is now a key part of the international quest to understand the invisible substance that surrounds us, penetrates us, and binds the universe together. A Ray of Light in a Sea of Dark Matter offers readers a concise, accessible explanation of how astronomers probe dark matter. Readers quickly gain an understanding of what might be out there, how scientists arrive at their findings, and why this research is important to us. Engaging and insightful, Charles Keeton gives everyone an opportunity to be an active learner and listener in our ever-expanding universe. Watch a video with Charles Keeton: Watch video now. (http://www.youtube.com/watch?v=Uc3byXNS1G0).
Light Scalar Fields In A Dark Universe
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Author : Gabriel Zsembinszki
language : en
Publisher:
Release Date : 2007
Light Scalar Fields In A Dark Universe written by Gabriel Zsembinszki and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Darkness At Night
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Author : Edward Robert Harrison
language : en
Publisher: Harvard University Press
Release Date : 1987
Darkness At Night written by Edward Robert Harrison and has been published by Harvard University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Science categories.
In tracing this story of discovery, astronomer and physicist Harrison explores the concept of infinite space, the structure and age of the universe, the nature of light, and other subjects that once were so perplexing.
Dark Side Of The Universe
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Author : Iain Nicolson
language : en
Publisher:
Release Date : 2007-03-20
Dark Side Of The Universe written by Iain Nicolson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-03-20 with Science categories.
Once we thought the universe was filled with shining stars, dust, planets, and galaxies. We now know that more than 98 percent of all matter in the universe is dark. It emits absolutely nothing yet bends space and time; keeps stars speeding around galaxies; and determines the fate of the universe. But dark matter is only part of the story. Scientists have recently discovered that the expansion of the universe is speeding up, driven by a mysterious commodity called dark energy. Depending on what dark matter and energy happen to be, our seemingly quiet universe could end its days in a Big Rip, tearing itself apart, or a Big Crunch, collapsing down to a universe the size of nothing, ready to be reincarnated in a Big Bang once again. For the general reader and armchair astronomer alike, Iain Nicolson’s fascinating account shows how our ideas about the nature and the content of the universe have developed. He highlights key discoveries, explains underlying concepts, and examines current thinking on dark matter and dark energy. He describes techniques that astronomers use to explore the remote recesses of the cosmos in their quest to understand its composition, evolution, and ultimate fate.
The Dark Universe
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Author : Mario Livio
language : en
Publisher: Cambridge University Press
Release Date : 2004-02-26
The Dark Universe written by Mario Livio and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-02-26 with Science categories.
This volume presents especially written articles by a host of world experts working on all aspects of dark matter and theories of gravity. This is an indispensable collection of review articles for researchers and graduate students.
Through A Universe Darkly
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Author : Marcia Bartusiak
language : en
Publisher: HarperCollins Publishers
Release Date : 1993
Through A Universe Darkly written by Marcia Bartusiak and has been published by HarperCollins Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Biography & Autobiography categories.
One of America's most talked-about science writers--and author of the award-winning book, Thursday's Universe--explores the phenomenon of "dark matter", the hypothesized, invisible substance that is changing our view of the universe. Photographs.