A Ray Of Light In A Sea Of Dark Matter

Author : Charles Keeton
Publisher : Rutgers University Press
Page : 112 pages
File Size : 54,5 Mb
Release : 2014-04-30
Category : Science
ISBN : 9780813572123

Get Book

A Ray of Light in a Sea of Dark Matter by Charles Keeton Pdf

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).

Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 48,6 Mb
Release : 2024-06-14
Category : Electronic
ISBN : 9789814470001

Get Book

The Light/Dark Universe by Anonim Pdf

Author : Paul S. Wesson
Publisher : World Scientific
Page : 236 pages
File Size : 50,7 Mb
Release : 2008
Category : Science
ISBN : 9789812834423

Get Book

The Light/Dark Universe by Paul S. Wesson Pdf

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.

Author : Alain Mazure,Vincent Le Brun
Publisher : Springer Science & Business Media
Page : 188 pages
File Size : 52,5 Mb
Release : 2011-11-16
Category : Science
ISBN : 9781441988225

Get Book

Matter, Dark Matter, and Anti-Matter by Alain Mazure,Vincent Le Brun Pdf

For over ten years, the dark side of the universe has been headline news. Detailed studies of the rotation of spiral galaxies, and 'mirages' created by clusters of galaxies bending the light from very remote objects, have convinced astronomers of the presence of large quantities of dark (unseen) matter in the cosmos. The most striking fact is that they seem to compromise about 95% of the matter/energy content of the universe. As for ordinary matter, although we are immersed in a sea of dark particles, including primordial neutrinos and photons from fossil cosmological radiation, both we and our environment are made of ordinary, 'baryonic' matter. Authors Mazure and Le Brun present the inventory of matter, baryonic and exotic, and investigating the nature and fate of matter's twin, anti-matter. They show how technological progress has been a result of basic research, in tandem with the evolution of new ideas, and how the combined effect of these advances might help lift the cosmic veil.

Author : Sabino Matarrese,Monica Colpi,Vittorio Gorini,Ugo Moschella
Publisher : Springer Science & Business Media
Page : 404 pages
File Size : 51,8 Mb
Release : 2011-02-10
Category : Science
ISBN : 9789048186853

Get Book

Dark Matter and Dark Energy by Sabino Matarrese,Monica Colpi,Vittorio Gorini,Ugo Moschella Pdf

This book brings together reviews from leading international authorities on the developments in the study of dark matter and dark energy, as seen from both their cosmological and particle physics side. Studying the physical and astrophysical properties of the dark components of our Universe is a crucial step towards the ultimate goal of unveiling their nature. The work developed from a doctoral school sponsored by the Italian Society of General Relativity and Gravitation. The book starts with a concise introduction to the standard cosmological model, as well as with a presentation of the theory of linear perturbations around a homogeneous and isotropic background. It covers the particle physics and cosmological aspects of dark matter and (dynamical) dark energy, including a discussion of how modified theories of gravity could provide a possible candidate for dark energy. A detailed presentation is also given of the possible ways of testing the theory in terms of cosmic microwave background, galaxy redshift surveys and weak gravitational lensing observations. Included is a chapter reviewing extensively the direct and indirect methods of detection of the hypothetical dark matter particles. Also included is a self-contained introduction to the techniques and most important results of numerical (e.g. N-body) simulations in cosmology. " This volume will be useful to researchers, PhD and graduate students in Astrophysics, Cosmology Physics and Mathematics, who are interested in cosmology, dark matter and dark energy.

Author : Yasushi Muraki
Publisher : Unknown
Page : 262 pages
File Size : 40,6 Mb
Release : 2004
Category : Cosmic rays
ISBN : UCLA:L0091275206

Get Book

Cosmic Rays and Dark Matter by Yasushi Muraki Pdf

Author : Jerome Drexler
Publisher : Universal-Publishers
Page : 164 pages
File Size : 45,6 Mb
Release : 2004
Category : Science
ISBN : 1581125518

Get Book

How Dark Matter Created Dark Energy and the Sun by Jerome Drexler Pdf

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.

Author : Jiang Wu
Publisher : Scientific Research Publishing, Inc. USA
Page : 150 pages
File Size : 50,5 Mb
Release : 2023-02-03
Category : Antiques & Collectibles
ISBN : 9781649975577

Get Book

The Sun Light Sweeping the Earth Influence Our Life by Jiang Wu Pdf

The human understanding of the universe and scientific development rely on new knowledge continuous accumulation. Much old knowledge has been gradually overthrown. Einstein’s “general relativity” completely changed people discussion direction of the origin and destination of the universe, but Einstein only won the Nobel Prize once. in fact, the reason is very simple, At that time, the Nobel Prize judges were unable to understand Einstein’s pub-lished papers, so they were unable to evaluate Einstein’s papers. And the judges could not to prove that Einstein’s conclusions were right or wrong at that time. Now Nobel Prize winners have won the Nobel Prize because he proved that Einstein’s theory has a little wrong. However, human beings always need to constantly put forward new theories in an exploratory way. Even if they are not perfect, they are also the steps to promote scientific and technological progress. In this book, discuss the miraculous phenomenon in 30 degrees north latitude, the laws of large scale-scale war victory and defeat and political situation changes, the electromagnetic waves influence biological evolution and life span, the novel coronavirus origin and popularity duration, the quantum entanglement and dark energy new explanation, they all are unsolved mysteries in the world today. It is neces-sary to boldly put forward new theories to understand the most forefront hot topics of science.

Author : Hans Volker Klapdor-Kleingrothaus,I. V. Krivosheina
Publisher : World Scientific
Page : 603 pages
File Size : 49,7 Mb
Release : 2010
Category : Science
ISBN : 9789814293785

Get Book

Dark Matter in Astrophysics and Particle Physics by Hans Volker Klapdor-Kleingrothaus,I. V. Krivosheina Pdf

Dark matter and dark energy are one of the central mysteries in modern physics, although modern astrophysical and cosmological observations and particle physics experiments can and will provide vital clues in uncovering its true nature. The DARK 2009 Conference brought together World?s leading researchers in both astrophysics and particle physics, providing an opportunity and platform to present their latest results to the community. The topics covered are wide-ranging, from terrestrial underground experiments to space experimental efforts to search for dark matter, and on the theoretical aspects, from the generating of a fifth family as origin of dark matter, extra dimensions and dark matter to non-standard Wigner classes and dark matter. One of the new highlights was certainly a possible connection between a neutrino mass as observed by nuclear double beta decay and the dark energy. Highly important and relevant in its field, the book presents a vital snapshot of the sometimes seemingly disparate areas of dark matter research and offers an exciting overview of current ideas and future directions.

Author : Stefano Profumo
Publisher : World Scientific Publishing Company
Page : 288 pages
File Size : 50,8 Mb
Release : 2017-02-23
Category : Electronic
ISBN : 9781786340030

Get Book

An Introduction to Particle Dark Matter by Stefano Profumo Pdf

What is the dark matter that fills the Universe and binds together galaxies? How was it produced? What are its interactions and particle properties? The paradigm of dark matter is one of the key developments at the interface of cosmology and elementary particle physics. It is also one of the foundations of the standard cosmological model. This book presents the state of the art in building and testing particle models for dark matter. Each chapter gives an analysis of questions, research directions, and methods within the field. More than 200 problems are included to challenge and stimulate the reader's knowledge and provide guidance in the practical implementation of the numerous "tools of the trade" presented. Appendices summarize the basics of cosmology and particle physics needed for any quantitative understanding of particle models for dark matter. This interdisciplinary textbook is essential reading for anyone interested in the microscopic nature of dark matter as it manifests itself in particle physics experiments, cosmological observations, and high-energy astrophysical phenomena: from graduate students and advanced undergraduates to cosmologists and astrophysicists interested in particle models for dark matter and particle physicists interested in early-universe cosmology and high-energy astrophysics. Request Inspection Copy

Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 53,8 Mb
Release : 2024-06-14
Category : Electronic
ISBN : 9789814471176

Get Book

Dark Matter in Astroparticle and Particle Physics by Anonim Pdf

Author : Ellen Labrecque
Publisher : Unknown
Page : 33 pages
File Size : 49,5 Mb
Release : 2020-08
Category : Black holes (Astronomy)
ISBN : 9781496681690

Get Book

Mysteries of Black Holes and Dark Matter by Ellen Labrecque Pdf

"What is a black hole? What is dark matter and what is it made of? How do scientists discover black holes and dark matter if they can't be seen? What do scientists know about these mysterious parts of the universe and what do they still hope to find out? Budding astronomers will learn the answers to these questions and more!"--

Author : IntroBooks
Publisher : Unknown
Page : 34 pages
File Size : 42,8 Mb
Release : 2019-12-19
Category : Electronic
ISBN : 1677522577

Get Book

Dark Matter Theory by IntroBooks Pdf

Dark matter is an undetected mass form that leaves no light or least light and could be identified through its gravitational forces. The existence of the dark energy and the dark matter were found late in the 1930s. There were solid evidences in the findings of the early 20th century scientist work for the existence of the dark matter that emits least light. Sources of a repulsive force that is undetected by humans so far, is the dark energy. This dark energy is accelerating the rate at what the universe is expanding. The existence of the dark energy and the dark matter were just recent findings. There is no depth in the understanding of these matter and energy.

Author : J. Val Blain
Publisher : Nova Publishers
Page : 272 pages
File Size : 44,9 Mb
Release : 2005
Category : Science
ISBN : 1594542430

Get Book

Progress in Dark Matter Research by J. Val Blain Pdf

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.

Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 54,5 Mb
Release : 2024-06-14
Category : Electronic
ISBN : 9789814474788

Get Book

The Identification of Dark Matter by Anonim Pdf