Download or read book Gravitational Fields Dark Matter Explained written by Martin Walsh and published by Xlibris Corporation. This book was released on 2018-07-05 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This theory is the definitive explanation of gravity and dark matter. For scientists and novices who finally wish to unlock this secret phenomenon, simply read this book. Every mechanical and scientific example presented can be viewed in the natural world for anyone to draw their own conclusions, and whoever reads this book will see it for themselves. Simply written and explained, straightforward, and physically represented in the natural world, if you only read one book on gravity and dark matter, it must be this book.
Download or read book Attraction and Repulsion in the Universe written by Miroslav Halza and published by Miroslav Halza. This book was released on 2012-11-23 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book hypothesizes the existence of a trinity of subatomic Builder particles that manage the growth and expansion of the post-Creation universe via three elemental long-range forces. Gravitons mediate the relatively weak gravitational force, which draws objects together; photons mediate its opposite, the photational force that pushes objects apart; and magnetons (along with their parent particles, neutrinos) mediate the powerful inductive attractive force. Drawing on recent discoveries in the fields of astronomy, astrophysics, and particle physics, Halza carefully combines classic mechanics with its quantum counterpart to draw conclusions about underpinnings of our Universe that are both Biblically acceptable and scientifically plausible. Extrapolating from undisputed physical law and counterintuitive subatomic interactions alike, he goes on to explain why the inductive force obviates the need for the hypothetic dark matter that some cosmologists add to their theories of the universe in order to balance their equationsbased on the misconception that gravity acts as the only long-range attractive force in our universe. One of the ramifications of Halzas theory is that the observable matter in the universe may, in fact, be all there isand that it exerts an attractive force six times stronger than previous theories allow for, given the inductive forces presence. Among other things, this suggests that our Sun contains only one-sixth of its previously calculated masswhich has startling implications regarding the Suns age and expected lifetime, and the fate of all life on Earth.
Download or read book Connecting Quarks with the Cosmos written by National Research Council and published by National Academies Press. This book was released on 2003-03-12 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances made by physicists in understanding matter, space, and time and by astronomers in understanding the universe as a whole have closely intertwined the question being asked about the universe at its two extremesâ€"the very large and the very small. This report identifies 11 key questions that have a good chance to be answered in the next decade. It urges that a new research strategy be created that brings to bear the techniques of both astronomy and sub-atomic physics in a cross-disciplinary way to address these questions. The report presents seven recommendations to facilitate the necessary research and development coordination. These recommendations identify key priorities for future scientific projects critical for realizing these scientific opportunities.
Download or read book Dark Matter and Dark Energy written by Brian Clegg and published by Icon Books. This book was released on 2019-08-08 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Clear and compact ... It's hard to fault as a brief, easily digestible introduction to some of the biggest questions in the Universe' Giles Sparrow, BBC Four's The Sky at Night , Best astronomy and space books of 2019: 5/5 All the matter and light we can see in the universe makes up a trivial 5 per cent of everything. The rest is hidden. This could be the biggest puzzle that science has ever faced. Since the 1970s, astronomers have been aware that galaxies have far too little matter in them to account for the way they spin around: they should fly apart, but something concealed holds them together. That 'something' is dark matter - invisible material in five times the quantity of the familiar stuff of stars and planets. By the 1990s we also knew that the expansion of the universe was accelerating. Something, named dark energy, is pushing it to expand faster and faster. Across the universe, this requires enough energy that the equivalent mass would be nearly fourteen times greater than all the visible material in existence. Brian Clegg explains this major conundrum in modern science and looks at how scientists are beginning to find solutions to it.
Download or read book The Cosmic Cocktail written by Katherine Freese and published by Princeton University Press. This book was released on 2016-05-17 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inside story of the epic quest to solve the mystery of dark matter The ordinary atoms that make up the known universe—from our bodies and the air we breathe to the planets and stars—constitute only 5 percent of all matter and energy in the cosmos. The rest is known as dark matter and dark energy, because their precise identities are unknown. The Cosmic Cocktail is the inside story of the epic quest to solve one of the most compelling enigmas of modern science—what is the universe made of?—told by one of today's foremost pioneers in the study of dark matter. Blending cutting-edge science with her own behind-the-scenes insights as a leading researcher in the field, acclaimed theoretical physicist Katherine Freese recounts the hunt for dark matter, from the discoveries of visionary scientists like Fritz Zwicky—the Swiss astronomer who coined the term "dark matter" in 1933—to the deluge of data today from underground laboratories, satellites in space, and the Large Hadron Collider. Theorists contend that dark matter consists of fundamental particles known as WIMPs, or weakly interacting massive particles. Billions of them pass through our bodies every second without us even realizing it, yet their gravitational pull is capable of whirling stars and gas at breakneck speeds around the centers of galaxies, and bending light from distant bright objects. Freese describes the larger-than-life characters and clashing personalities behind the race to identify these elusive particles. Many cosmologists believe we are on the verge of solving the mystery. The Cosmic Cocktail provides the foundation needed to fully fathom this epochal moment in humankind’s quest to understand the universe.
Download or read book How Dark Matter Created Dark Energy and the Sun written by Jerome Drexler and published by Universal-Publishers. This book was released on 2004 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Discovering Dark Matter written by Philip Wolny and published by The Rosen Publishing Group, Inc. This book was released on 2014-12-15 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discoveries in physics that inform current dark matter theory, everything from Newtonian gravity to Einstein's relativity to the Higgs boson, are examined in this authoritative guide. It examines the biggest question facing physicists today: if we are only seeing about four percent of matter in the universe, what is the rest of it made of? The lengths that scientists are going to find what they call dark matter are revealed. Alternative theories to dark matter are also discussed, as are the scientists who don't believe that dark matter exists and are conducting their own experiments to disprove its existence.
Download or read book Dark Matter Explained written by Kristi Lew and published by Enslow Publishing, LLC. This book was released on 2018-12-15 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists believe that the universe is mostly made up of dark matter, a mysterious substance that is different from the ordinary matter people can touch, smell, see, and interact with. Dark matter cannot be directly observed, but it can be studied by examining its effect on ordinary matter. Simplified explanations of complex scientific concepts and fascinating images will help students understand how physicists employ Kepler's laws of planetary motion, gravitational lensing, particle colliders, and other theories and tools to learn about dark matter. Informative sidebars explore related timely topics in depth, while a Further Reading section provides several resources for additional study.
Download or read book The Invisible Universe Dark Matter and Dark Energy written by Eleftherios Papantonopoulos and published by Springer. This book was released on 2007-08-01 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nature and essence of Dark Matter and Dark Energy have become the central issue in modern cosmology over the past years. This extensive volume, an outgrowth of a topical and tutorial summer school, has been set up with the aim of constituting an advanced-level, multi-authored textbook which meets the needs of both postgraduate students and young researchers in the fields of modern cosmology and astrophysics.
Download or read book Dark Matter Dark Energy Dark Gravity written by Stephen Perrenod and published by Createspace Independent Publishing Platform. This book was released on 2013-04-17 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dark Matter, Dark Energy and Dark Gravity make life possible!This book for the lay reader provides a summary of the latest astrophysical observational results and theoretical insights into what we know and what we hope to learn about dark matter, dark energy, and dark gravity.How did the profound beauty of our Earth, our Solar System, our Milky Way galaxy and indeed our universe unfold? Dark matter, dark energy, and dark gravity have made all the difference in how the universe has developed, and have been key to creating the overall environment that makes life possible. We have only recently developed the ability to begin unlocking their secrets, thus providing a deeper insight into how a universe of our type is possible. It seems that because of dark matter, dark energy and dark (weak) gravity, our universe has the right attributes for the development of complex structure and the evolution of intelligent life that can engage in the quest to understand our world. These "dark" or more hidden attributes of the cosmos have very good outcomes.In particular, the existence of dark matter makes it easier to form complex structures, including galaxies, stars and planets through gravitational collapse of denser regions of the universe. Planets are the most suitable abodes for the development of life. Dark energy acts to extend the lifetime of the universe by counteracting gravity and driving continued expansion of the universe.Even as far back as the 1930s there has been evidence that most of the matter in the universe was not visible via electromagnetic radiation (optical light, radio waves, etc.). By the last few decades of the 20th century, the case for a considerable amount of this dark matter was very strong. It is the second largest contributor to the total mass-energy of the universe. We don't know what it is and there are various candidates to explain it; nevertheless we see the gravitational effects of dark matter everywhere on the largest scales. Recent observational results indicate that dark matter dominates by a factor of 6 relative to the ordinary matter that makes up stars, planets, and living things.We now know that the major contributor to the mass-energy of the universe is not the substantial dark matter, but the 'newer' so-called dark energy. Dark energy acts to some extent as a negative gravity, and for the last several billion years has driven the expansion of the universe to a faster and faster pace, overcoming even the gravitational effect of dark matter. We have a general idea that it is the irreducible energy found in every volume of space, even in the absence of matter - in the vacuum. We don't understand why it takes the value that it does, one that is small in quantum particle physics terms, but nevertheless is of great significance on the large cosmological scale of the universe. The third important aspect to consider is not a mass-energy component, but the nature of gravity and space-time. The big question here is - why is gravity so relatively weak, as compared to the other 3 forces of nature? These 3 forces are the electromagnetic force, the strong nuclear force, and the weak nuclear force. Gravity is different - it has a dark or hidden side. It may very well operate in extra dimensions beyond the normal 4 dimensions of space-time that we can observe. This is what we mean in this book by "dark gravity".
Download or read book Dark Matter and Dark Energy written by Sabino Matarrese and published by Springer Science & Business Media. This book was released on 2011-02-10 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Nonlocal Gravity written by Bahram Mashhoon and published by Oxford University Press. This book was released on 2017-05-05 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relativity theory is based on a postulate of locality, which means that the past history of the observer is not directly taken into account. This book argues that the past history should be taken into account. In this way, nonlocality—-in the sense of history dependence—-is introduced into relativity theory. The deep connection between inertia and gravitation suggests that gravity could be nonlocal, and in nonlocal gravity the fading gravitational memory of past events must then be taken into account. Along this line of thought, a classical nonlocal generalization of Einstein's theory of gravitation has recently been developed. A significant consequence of this theory is that the nonlocal aspect of gravity appears to simulate dark matter. According to nonlocal gravity theory, what astronomers attribute to dark matter should instead be due to the nonlocality of gravitation. Nonlocality dominates on the scale of galaxies and beyond. Memory fades with time; therefore, the nonlocal aspect of gravity becomes weaker as the universe expands. The implications of nonlocal gravity are explored in this book for gravitational lensing, gravitational radiation, the gravitational physics of the Solar System and the internal dynamics of nearby galaxies, as well as clusters of galaxies. This approach is extended to nonlocal Newtonian cosmology, where the attraction of gravity fades with the expansion of the universe. Thus far, scientists have only compared some of the consequences of nonlocal gravity with astronomical observations.
Download or read book INFLUENCES OF DARK SECTOR ON LOCAL GRAVITATIONAL PHENOMENA written by Samrat Ghosh and published by Samrat Ghosh. This book was released on 2022-10-10 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: General Relativity (GR) is arguably considered as the most elegant theory in physics. GR pronounces gravitation as the manifestation of space-time geometry. GR has been extremely successful at describing observations and passed all experimental tests conducted so far. GR based cosmology is the cornerstone of the current hot Big Bang description of our Universe. However, some unexpected components turn out to make up most of the Universe's mass-energy budget in the GR description of the observations at large scales. Recent cosmological observations suggest that the Universe is undergoing a phase of accelerated expansion. The explanation of such accelerated expansion in the purview of general relativity requires the presence of a large amount of some exotic form of energy density with negative pressure, the so-called dark energy. On the other hand, the amount of luminous matter in galaxies is found insufficient to explain the observed galactic rotation curves and thereby the existence of non-luminous or dark matter, that neither interacts with radiation nor with the conventional matter except through the gravitational field or through some feeble interaction, has to be assumed. This dark matter component is also required to be non-relativistic (i.e. cold) in view of structure formation. It appears from a wide variety of astrophysical observations that ordinary baryonic matter constitutes just 4.9% of the energy density in the Universe while dark matter composes about 26.8% and the dark energy contributes most - about 68.3% of the energy density in the Universe. The journey of exploring the laws of nature had crossed a milestone when Nicolus Copernicus predicted the actual planetary motion and his student Galileo Galilei proved his teacher's prediction by his revolutionary discovery of Telescope. The laws of planetary motion by Johannes Kepler, created a perception about motion inside the solar system which was given a proper and generalized dimension by Isac Newton with his revolutionary Theory of Gravitation [2]. The invention of the telescope and the theory of Gravitation explored the gateway of gathering knowledge about the phenomena not only beyond the Earth but beyond the solar system also.
Download or read book Dark Matter Theory written by IntroBooks and published by IntroBooks. This book was released on 2018-02-19 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Matter in the Universe written by Ph. Jetzer and published by Springer Science & Business Media. This book was released on 2002-07-31 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume, the fourteenth in the Space Sciences Series of ISS/, is dedicated to the matter in the universe, which was the topic of a workshop organized by ISSI from 19 to 22 March 2001 in Bern. The aim of the meeting was to gather ac tive researchers from various fields (cosmology, astrophysics, nuclear and particle physics as well as space science) to asses the exciting new developments in the search for abundant and yet unknown forms of matter in the universe. Due to the importance of the field and the rapid developments which are taking place ISSI decided to organize a workshop on matter in the universe and invited nine convenors, John Ellis, Johannes Geiss, Philippe Jetzer, Heinrich Leutwyler, Klaus Pretzl, Rafael Rebolo, Norbert Straumann, Gustav Andreas Tammann and Rudolf von Steiger, who formulated the aims and goals of the meeting. The work shop was organized such as to have only plenary sessions with typically half hour presentations and ample time for discussions. The last day was devoted to conclusions and future objectives. The knowledge of the amount and nature of matter present in the universe is undoubtedly one of the most relevant topics oftoday's astrophysics and cosmology.
Download or read book Transforming Dark Matter into Detectable Matter Revised Edition written by Daniel Stark and published by GRIN Verlag. This book was released on 2021-08-25 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Academic Paper from the year 2021 in the subject Physics - Other, grade: 10, , course: retired, language: English, abstract: This paper is the 4th in a series wherein a theory is proposed that our matter is excited Dark Matter (DM) with the addition of an Electromagnetic (EM) field. The method of excitation is the subject of this paper. Excitation is predicted when a DM quanta group captures into closed wave orbit a photon. The orbiting photon creates EM outgoing and incoming EM waves as well as a standing spherical wave region inside the closed wave orbit. This theory integrates concepts from other theorists, prominently Dr. Milo Wolff’s theories that: (1) An outgoing or incoming EM wave creates a positive or negative charge. (2) An EM standing wave is the basis for particle self-assembly creating more complex composite particles including the atom. Standing Wave self-assembly replaces strong and weak nuclear force theories. Composite particles, atoms, crystals, and most of our observable matter are formed in Childiani regions described by spherical harmonic standing waves. The photon’s polarizations determine different particle characteristics. A Clockwise (CW) or counter-clockwise (CCW) closed wave orbit creates the particle’s ‘up” and “down” as well as spin. Circular polarized photons determine if the outward spherical wave is outgoing or incoming based on the EM field vector direction when entering closed wave orbit. A radially polarized photon’s EM waves exterior to the photon’s closed wave orbit may also be destructive, forming chargeless particles (neutrino). This theory: (a) requires the scalar gravitational field, f, to be the photon’s travel medium with f having an index-of-refraction. (b) Mass becomes a function of f values at each point in space, as predicted by Gunnar Nordström. (c) Albert Einstein’s definition for a particle is used which is quanta having dimension. (d) Space is defined as flat, not curved as described in relativity. This theory predicts the trace stress–energy tensor or a flat space-time.
Download or read book Essentials on Dark Matter written by Abraao Jesse Capistrano and published by BoD – Books on Demand. This book was released on 2018-09-12 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: The modern roots on the dark matter problem were basically launched in the 30s, with Zwicky's observations on a notorious discrepancy of mass in coma cluster that presented 500 times the mass than expected using the Newtonian theory (Virial theorem). Curiously, almost 90 years have passed, and the dark matter problem persists and is one of the most common challenges in both observational and theoretical physics. The Dark Matter is a rapid communication on the status-quo of the dark matter phenomenology as well as a presentation of new discussions on the theme.
