Download or read book Accelerating Expansion written by Gordon Belot and published by Oxford University Press. This book was released on 2023-08-24 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accelerating Expansion explores some of the philosophical implications of modern cosmology, focused on the significance that the discovery of the accelerating expansion of the Universe has for our understanding of time, geometry, and physics. The appearance of the cosmological constant in the equations of general relativity allows one to model universes in which space has an inherent tendency towards expansion. This constant, introduced by Einstein but subsequently abandoned by him, returned to centre stage with the discovery of the accelerating expansion. This pedagogically-oriented essay begins with a study of the most basic and elegant relativistic world that involves a positive cosmological constant, de Sitter spacetime. It then turns to the relatives of de Sitter spacetime that dominate modern relativistic cosmology. Some of the topics considered include: the nature of time and simultaneity in de Sitter worlds; the sense in which de Sitter spacetime is a powerful dynamical attractor; the limited extent to which observation can give us information about the topology of space in a world undergoing accelerated expansion; and cosmologists' favourite sceptical worry about the reliability of evidence and the possibility of knowledge, the problem of Boltzmann brains.
Download or read book The Accelerating Expansion of the Universe written by Paul F. Kisak and published by Createspace Independent Publishing Platform. This book was released on 2017-07-15 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: 11.3 billion years ago a star exploded. It is framed by the constellation Ursa Major. It was photographed in 1997 and it's impact on cosmology theory is still being felt. This exploding star is the Supernova 1997ff type Ia. The discovery and analysis of the radiation that emanates from SN 1997ff is providing support for the theory of "The Accelerating Expansion of our Universe," "Dark Matter," and "Dark Energy." The Hubble discovery also reveals that the universe only recently began speeding up, a discovery that suggests the universe is expanding more quickly than in the past, but there were alternate explanations. The accelerating expansion of the universe is the observation that the universe appears to be expanding at an increasing rate, so that the velocity at which a distant galaxy is receding from the observer is continuously increasing with time. The accelerated expansion was discovered in 1998, by two independent projects, the Supernova Cosmology Project and the High-Z Supernova Search Team, which both used distant type Ia supernovae as standard candles to measure the acceleration. The expansion of the universe is thought to have been accelerating since the universe entered its dark-energy-dominated era roughly 5 billion years ago. Within the framework of general relativity, an accelerating expansion can be accounted for by a positive value of the cosmological constant (Lambda), equivalent to the presence of a positive vacuum energy, dubbed "dark energy." While there are alternative possible explanations, the description assuming dark energy (positive Lambda) is used in the current standard model of cosmology, which also includes cold dark matter (CDM) and is known as the Lambda-CDM model. This book focuses on our Accelerating universe and the theories that support it.This book is designed to be a state of the art, superb academic reference work and provide an overview of the topic and give the reader a structured knowledge to familiarize yourself with the topic at the most affordable price possible. The accuracy and knowledge is of an international viewpoint as the edited articles represent the inputs of many knowledgeable individuals and some of the most current knowledge on the topic, based on the date of publication.
Download or read book The Accelerating Universe written by Mario Livio and published by Turner Publishing Company. This book was released on 2008-05-02 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advance Praise for The Accelerating Universe "The Accelerating Universe is not only an informative book about modern cosmology. It is rich storytelling and, above all, a celebration of the human mind in its quest for beauty in all things." —Alan Lightman, author of Einstein's Dreams "This is a wonderfully lucid account of the extraordinary discoveries that have made the last years a golden period for observational cosmology. But Mario Livio has not only given the reader one clear explanation after another of what astronomers are up to, he has used them to construct a provocative argument for the importance of aesthetics in the development of science and for the inseparability of science, art, and culture." —Lee Smolin, author of The Life of the Cosmos "What a pleasure to read! An exciting, simple account of the universe revealed by modern astronomy. Beautifully written, clearly presented, informed by scientific and philosophical insights." —John Bahcall, Institute for Advanced Study "A book with charm, beauty, elegance, and importance. As authoritative a journey as can be taken through modern cosmology." —Allan Sandage, Observatories of the Carnegie Institution of Washington
Download or read book Accelerated Cosmic Expansion written by Claudia Moreno González and published by Springer Science & Business Media. This book was released on 2013-11-29 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings from the 2012 Fourth International Meeting on Gravitation and Cosmology, focusing on accelerated cosmic expansion This volume provides both an update and a review of the state of alternative theories of gravity in connection with the accelerated expansion of the universe issue. Different theoretical proposals exist to explain the acceleration in the cosmic expansion, generating the dark energy issue and opening the possibility to theories of gravity alternative to general relativity. Related issues such as the dark matter problem are also surveyed in order to give the readers profound insight on the subject from different points of view. Comprised of short talks and plenary lectures given by leading experts in the field, some of them with brilliant and historic contributions, the book allows the reader to find readable and referenced surveys in topics like f(R) theories, the dark matter and dark energy issues, Modified Newtonian Dynamics (MOND) scenarios, f(T) theories, scalar-tensor theories derived from non-Riemannian geometries, emergent universes, the cosmological constant and other topics of current interest for younger and senior physicists and graduate students. These proceedings are from the Fourth International Meeting on Gravitation and Cosmology, held in Guadalajara, Jalisco, México, from 20 - 25 May, 2012, was sponsored by ICTP- Trieste, Italy and COECyTJAL-Universidad de Guadalajara, México. This event is a series of scientific meetings started in 2004 in Cuba, focusing on current and selected topics in the fields of gravitation and cosmology.
Download or read book The Accelerating Expansion of the Universe written by Amol Ravindra Upadhye and published by . This book was released on 2007 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lectures on Cosmology written by Georg Wolschin and published by Springer. This book was released on 2010-03-10 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lectures that four authors present in this volume investigate core topics related to the accelerated expansion of the Universe. Accelerated expansion occured in the ?36 very early Universe – an exponential expansion in the in ationary period 10 s after the Big Bang. This well-established theoretical concept had rst been p- posed in 1980 by Alan Guth to account for the homogeneity and isotropy of the observable universe, and simultaneously by Alexei Starobinski, and has since then been developed by many authors in great theoretical detail. An accelerated expansion of the late Universe at redshifts z
Download or read book Expansion of the Universe written by Steff Jaywan and published by Dedona Publishing. This book was released on with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: The universe is a vast and enigmatic expanse, filled with countless mysteries that have intrigued scientists and philosophers for centuries. One of the most profound discoveries of modern cosmology is that the universe is not only expanding but doing so at an accelerating rate. This revelation has reshaped our understanding of the cosmos and introduced the concept of dark energy as a dominant force driving this acceleration. In this book, we embark on a journey through the history of cosmological thought, from the early observations that hinted at an expanding universe to the groundbreaking discoveries that revealed its acceleration. We will explore the role of the cosmological constant, a term introduced by Einstein in his equations of General Relativity, which has come to be associated with dark energy. We begin with a foundational understanding of the universe's expansion, delving into the Big Bang theory and the key observations that support it. From there, we examine the pivotal role of the cosmological constant and its implications for the structure and fate of the universe. As we navigate through the complexities of dark energy and its various theoretical models, we will also address the challenges and alternative theories that scientists are exploring to explain this cosmic acceleration. Finally, we will consider the future of cosmological research, highlighting the ongoing quests to unravel the mysteries that still elude us.
Download or read book The Extravagant Universe written by Robert P. Kirshner and published by Princeton University Press. This book was released on 2016-09-13 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Extravagant Universe tells the story of a remarkable adventure of scientific discovery. One of the world's leading astronomers, Robert Kirshner, takes readers inside a lively research team on the quest that led them to an extraordinary cosmological discovery: the expansion of the universe is accelerating under the influence of a dark energy that makes space itself expand. In addition to sharing the story of this exciting discovery, Kirshner also brings the science up-to-date in a new epilogue. He explains how the idea of an accelerating universe--once a daring interpretation of sketchy data--is now the standard assumption in cosmology today. This measurement of dark energy--a quality of space itself that causes cosmic acceleration--points to a gaping hole in our understanding of fundamental physics. In 1917, Einstein proposed the "cosmological constant" to explain a static universe. When observations proved that the universe was expanding, he cast this early form of dark energy aside. But recent observations described first-hand in this book show that the cosmological constant--or something just like it--dominates the universe's mass and energy budget and determines its fate and shape. Warned by Einstein's blunder, and contradicted by the initial results of a competing research team, Kirshner and his colleagues were reluctant to accept their own result. But, convinced by evidence built on their hard-earned understanding of exploding stars, they announced their conclusion that the universe is accelerating in February 1998. Other lines of inquiry and parallel supernova research now support a new synthesis of a cosmos dominated by dark energy but also containing several forms of dark matter. We live in an extravagant universe with a surprising number of essential ingredients: the real universe we measure is not the simplest one we could imagine.
Download or read book Gravitation and cosmology Proceedings of the Spanish Relativity Meeting written by Alberto Lobo and published by Edicions Universitat Barcelona. This book was released on 2003 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics and Astrophysics written by Subal Kar and published by CRC Press. This book was released on 2022-05-05 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physics and Astrophysics—Glimpses of the Progress provides a comprehensive account of physics and astrophysics from the time of Aristotle to the modern era of Stephen Hawking and beyond. It takes the readers of all ages through a pleasant journey touching on the major discoveries and inventions that have taken place in both the macro-world, including that in the cosmos, and the micro-world of atomic and subatomic particles related to physics and astrophysics. Use of historical perspective and anecdote makes the storytelling on the progress of physics and astrophysics both interesting and absorbing. While peering through different developments in these fields, the book never compromises with the sanctity of the scientific content, including the depth and beauty of the physical concept of the topics concerned and the philosophical viewpoints they represent. Where appropriate, the book also delves into value judgments of life that affect our civilization. Features The intricate concepts of physics and astrophysics are explained in simple terms and in easy-to-understand language. Physics and astrophysics are discussed in a connected and correlated way in a single volume of comprehensive size but in totality, which to date is the unique feature of this book. Starting with Aristotle’s Physics and going through the work of Newton, Einstein, Schrödinger, Hubble, Hewish, Hawking, and others, including the present research on dark energy, dark matter, and the fifth force of nature, the reader will be kept absorbed and spellbound. In addition to the fundamental principles of Newtonian mechanics, Einstein’s relativity, quantum mechanics, string theory, loop quantum gravity, and so on, the cutting-edge technologies of recent times, such as the Large Hadron Collider, Laser Interferometer Gravitational-wave Observatory, and Event Horizon Telescope, are also explored. The book is aimed primarily at undergraduate and graduate students, researchers, and professionals studying physics and astrophysics. General readers will also find the book useful to quench their thirst for knowledge about the developments in physics and astrophysics.
Download or read book Cosmology and Particle Astrophysics written by Lars Bergström and published by Springer Science & Business Media. This book was released on 2006-05-26 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with basic facts about the observable universe, this book reviews the complete range of topics that make up a degree course in cosmology and particle astrophysics. The book is self-contained - no specialised knowledge is required on the part of the reader, apart from undergraduate math and physics. This paperback edition targets students of physics, astrophysics and cosmology from advanced undergraduate to early graduate level.
Download or read book The Ninth Marcel Grossmann Meeting written by Robert T. Jantzen and published by World Scientific. This book was released on 2002 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Unconditional Life written by Yoriko Otomo and published by Oxford University Press. This book was released on 2016 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Looking at how international law regulates, and is itself influenced by, technology and risk, this book illustrates how and why international law has been unable to properly deal with large-scale technological risk. Through delving into its nature, international law is shown itself to be a technology.
Download or read book Atlantis Rising Magazine 116 March April 2016 written by J. Douglas Kenyon and published by Atlantis Rising LLC. This book was released on 2016-03-01 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inside this full-color digital edition: PROTOSCIENCE Free Energy...Gravity Control...Alternative Science... THE QUEST FOR IMMORTALITY: ILLUSION OR REALITY? By Jerry Decker THE FORBIDDEN ARCHAEOLOGIST THE UNEXPLAINED HUMAN FOSSILS OF SAVONA, ITALY By Michael Cremo ALTERNATIVE SCIENCE SECRETS OF THE CAROLINA BAYS The Untold Story of the Younger Dryas By RALPH ELLIS ALTERNATIVE ARCHAEOLOGY DID THE RUSSIANS FIND ATLANTIS? It Could Be Time for a Fresh Look at Forgotten Reports By FRANK JOSEPH HOLISTIC HEALTH JUNK DNA OR NOT? Could the Genetic Material the 'Experts' Rejected Have a Purpose, After All? By BRENDAN MURPHY THE OTHER SIDE Shroud of Turin The Mysteries Grow Deeper By PATRICK MARSOLEK Shroud of Turin Big-Power Politics Then & Now ALTERNATIVE SCIENCE THE INTOLERANT CHURCH OF SCIENTISM How Well Has It Earned the Adulation It Asks of Us? By WILLIAM B. STOECKER SPIRITUALITY THE POWERS OF MEDITATION Just How Far Can Your Mind Take You? By JOHN WHITE ANCIENT MYSTERIES HIDDEN CHAMBERS IN EGYPT The Curious Revelations of New Hi-Tech Surveys By ROBERT M. SCHOCH, Ph.D. ALTERNATIVE ARCHAEOLOGY MAGICAL EGYPT 2 VIDEO PRODUCTION LEADS TO STARTLING DISCOVERIES Ancient Art Reveals Surprising Secrets By CHANCE GARDNER BOOK EXCERPT THE LOST ARTS OF LEVITATION Can Overcoming Gravity Be Simpler than We Thought? By STEVE RICHARDS ASTROLOGY TREK TO THE PLANET VULCAN Could Dark Matter or Dark Energy play a part in explaining a mysterious hidden planet spoken of in esoteric lore? By Julie Loar DVD LIFE BENEATH THE SURFACE Astounding New Evidence of Irreducible Complexity in Earth's Oceans By Marsha Oaks
Download or read book Model of the Universe written by Bobby McGehee and published by AuthorHouse. This book was released on 2010-02 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Model of the Universe concludes the universe to be a spherical region within a much larger region of primordial matter. Primordial Matter is determined to be an endless array of positroniums; matter (+) and antimatter (-) particles, stabilized in and by an equally spaced (.6 cm) hexahedron arrangement. When positron + and electron - particles come in contact they annihilate into photons; when photon concentrations become adequate, they precipitate into corporeal matter of the universe. The initial annihilation started a chain reaction from a single + & - pair which upset the positronium rotation synchronization. Photons from annihilations propagate in all directions and produce more continuing chain reaction annihilations. Outward flowing photon concentrations coalesce and precipitate into subatomic particles. Accretions of particles produce the objects and matter of the universe. The continuing process is called the deflagration wave, because a simple understandable analogy relates to a flame propagating through dry grass: matter is not created nor destroyed; it is only converted from one form of matter into another. All processes in this Model have been proven, and verified; all are consistent with the Laws of Physics.
Download or read book A Mysterious Universe written by Suhail Zubairy and published by Oxford University Press. This book was released on 2023-09-14 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Mysterious Universe introduces the fundamental laws of quantum mechanics, theory of relativity, and cosmology to a novice in simple language. This concise book deals with deep issues related to the mysteries of modern physics. Both quantum mechanics and relativity are highly mathematical subjects and are not easily accessible. In 2020, the author wrote a book Quantum Mechanics for Beginners with the aim of introducing the fundamentals of quantum theory to someone with elementary knowledge of physics and algebra. Here he goes one step further and introduces these ideas to someone with no prior knowledge of physics and mathematics. In the first part of the book, topics like the wave-particle duality, the probabilistic nature of the measurement, the possibility of multiple universes, and the nature of reality are discussed. In the second part, Einstein's special and general theories of relativity and their amazing and mind-boggling consequences are presented. The impact of the theory of relativity on cosmology is immense. The big bang model of the universe, black holes, and the current hot topics of dark matter and dark energy are explained and discussed. These fields that may hold the key to many unanswered questions about the universe are still evolving. This book is intended for readers, young and old, who would like to understand the incomprehensible laws that govern the universe without any prior background in physics and mathematics.
Download or read book What is Empty Space written by Doug Domke and published by Lulu.com. This book was released on 2016-04-13 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why ask what empty space really is? It is the nature of space itself that seems to be at the heart of the mysteries in physics and cosmology today. Einstein also told us that space is a something. He showed it could be stretched and warped when he published General Relativity in 1915. But over the last one hundred years, the nature of empty space has continued to become more mysterious and confusing. We've learned a lot about the Universe in the last one hundred years. We've even learned a lot about the nature of empty space. But we still have a lot more to learn! That is the subject of this book.
