Cosmic Rays In The Galaxy Black Holes Dark Matter And Dark Energy
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Cosmic Rays In The Galaxy Black Holes Dark Matter And Dark Energy
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Author : Jörg R. Hörandel
language : en
Publisher:
Release Date : 2008
Cosmic Rays In The Galaxy Black Holes Dark Matter And Dark Energy written by Jörg R. Hörandel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Cosmic rays categories.
Cosmic Rays And Dark Matter
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Author : Yasushi Muraki
language : en
Publisher:
Release Date : 2004
Cosmic Rays And Dark Matter written by Yasushi Muraki and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Cosmic rays categories.
Dark Matter
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Author : Michael Smith
language : en
Publisher: BoD – Books on Demand
Release Date : 2022-07-06
Dark Matter written by Michael Smith and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-07-06 with Science categories.
This book presents several new, important explanations for dark matter, all dissimilar to the discredited subatomic particle-like but invisible matter. One chapter presents evidence that abundant cold hydrogen, baryonic matter, is the source of the missing gravity. Another chapter suggests that dark matter is better explained by stars in spiral galaxies that follow non-Keplerian orbits. A third chapter proposes that gravity attributed to dark matter is due to the sprinkling of black holes throughout galaxies, which is supported by LIGO/Virgo observations. Another chapter questions the assumptions of the Friedmann (FLRW) model, proposing a better method for handling astrophysical data. Additional chapters discuss cosmic ray propagation, axion decay, the cosmological scale factor, and the philosophical outlook of cosmologists when dealing with the questions of dark matter and dark energy.
Chandra S Cosmos
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Author : Wallace H. Tucker
language : en
Publisher: Smithsonian Institution
Release Date : 2017-03-28
Chandra S Cosmos written by Wallace H. Tucker and has been published by Smithsonian Institution this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-28 with Science categories.
On July 23, 1999, the Chandra X-Ray Observatory, the most powerful X-ray telescope ever built, was launched aboard the space shuttle Columbia. Since then, Chandra has given us a view of the universe that is largely hidden from telescopes sensitive only to visible light. In Chandra's Cosmos, the Smithsonian Astrophysical Observatory's Chandra science spokesperson Wallace H. Tucker uses a series of short, connected stories to describe the telescope's exploration of the hot, high-energy face of the universe. The book is organized in three parts: "The Big," covering the cosmic web, dark energy, dark matter, and massive clusters of galaxies; "The Bad," exploring neutron stars, stellar black holes, and supermassive black holes; and "The Beautiful," discussing stars, exoplanets, and life. Chandra has imaged the spectacular, glowing remains of exploded stars and taken spectra showing the dispersal of their elements. Chandra has observed the region around the supermassive black hole in the center of our Milky Way and traced the separation of dark matter from normal matter in the collision of galaxies, contributing to both dark matter and dark energy studies. Tucker explores the implications of these observations in an entertaining, informative narrative aimed at space buffs and general readers alike.
The Light Dark Universe
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Author :
language : en
Publisher:
Release Date :
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.
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.
Progress In Dark Matter Research
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Author : J. Val Blain
language : en
Publisher: Nova Publishers
Release Date : 2005
Progress In Dark Matter Research written by J. Val Blain and has been published by Nova Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Dark matter (Astronomy) categories.
It is generally believed that most of the matter in the universe is dark, i.e. cannot be detected from the light which it emits (or fails to emit). Its presence is inferred indirectly from the motions of astronomical objects, specifically stellar, galactic, and galaxy cluster/supercluster observations. It is also required in order to enable gravity to amplify the small fluctuations in the cosmic microwave background enough to form the large-scale structures that we see in the universe today. For each of the stellar, galactic, and galaxy cluster/supercluster observations the basic principle is that if we measure velocities in some region, then there has to be enough mass there for gravity to stop all the objects flying apart. Dark matter has important consequences for the evolution of the Universe and the structure within it. According to general relativity, the Universe must conform to one of three possible types: open, flat, or closed. The total amount of mass and energy in the universe determines which of the three possibilities applies to the Universe. In the case of an open Universe, the total mass and energy density (denoted by the Greek letter Omega) is less than unity. If the Universe is closed, Omega is greater than unity. For the case where Omega is exactly equal to one the Universe is "flat". This book details leading-edge research from around the globe.
How Dark Matter Created Dark Energy And The Sun
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Author : Jerome Drexler
language : en
Publisher: Universal-Publishers
Release Date : 2004
How Dark Matter Created Dark Energy And The Sun written by Jerome Drexler and has been published by Universal-Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Science categories.
Through use of a lecture-slide format, this book presents an astrophysics detective story that chronicles Jerome Drexler's literature search for astronomical clues and evidence to unveil the nature of dark matter. There are a number of mysteries in astrophysics and cosmology that have remained unsolved for decades. What is dark matter? How exactly are stars created? In 1998, it was determined from supernova studies that the expansion of the Universe was accelerating, thereby creating the mystery of dark energy. Astrophysicists have developed mutually exclusive, single-phenomenon theories for each of these three phenomena, but not a unified theory for all three of them. The author's original goal was to identify dark matter, a decades-old mystery. In the process, he developed a new theory for dark matter and illuminated the nature of dark energy and the process of Sun formation. Since dark matter may have been instrumental in the creation of galaxies and stars, the author decided to test his new dark matter theory on the formation of the Sun. The results were very encouraging. He next sought a possible link between dark matter and the accelerating expansion of the Universe, which is attributed to the mysterious dark energy. Using his dark matter theory and the laws of physics, the author explained the accelerating expansion of the Universe in a plausible manner. This book chronicles the author's search for a unified astrophysical theory and how it finally evolved.
The Identification Of Dark Matter
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Author :
language : en
Publisher:
Release Date :
The Identification Of Dark Matter 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.
Proceedings Of The 6th International Workshop On The Identification Of Dark Matter
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Author : Minos Axenides
language : en
Publisher: World Scientific
Release Date : 2007
Proceedings Of The 6th International Workshop On The Identification Of Dark Matter written by Minos Axenides and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Science categories.
This volume is the latest in a prominent biannual series of scientific meetings on the exciting research topics of dark matter and, more recently, of dark energy. It contains a state-of-the-art update on detection efforts by experimental groups around the world trying to pin down exotic new forms of matter under the names of axions, neutralinos, wimps, primordial black holes, q balls, sterile neutrinos, as well as a tantalizing new form of dark energy component called phantom energy and quintessence. The book is self-contained as it also includes general reviews on recent cosmological observations OCo supernovae measurements, cosmic matter distribution surveys and cosmic radiation anisotropies OCo introducing even the uninitiated reader to this fascinating frontier of research."