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Author : Arend H. Broeils
Publisher :
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.3/5 (91 download)
Download or read book Dark and Visible Matter in Spiral Galaxies written by Arend H. Broeils and published by . This book was released on 1992 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ken Freeman
Publisher : Springer Science & Business Media
ISBN 13 : 0387276181
Total Pages : 164 pages
Book Rating : 4.3/5 (872 download)
Download or read book In Search of Dark Matter written by Ken Freeman and published by Springer Science & Business Media. This book was released on 2006-08-25 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written for the educated non-scientist and scientist alike, it spans a variety of scientific disciplines, from observational astronomy to particle physics. Concepts that the reader will encounter along the way are at the cutting edge of scientific research. However the themes are explained in such a way that no prior understanding of science beyond a high school education is necessary.
Author : Massimo Persic
Publisher :
ISBN 13 :
Total Pages : 632 pages
Book Rating : 4.3/5 (91 download)
Download or read book Dark and Visible Matter in Galaxies written by Massimo Persic and published by . This book was released on 1997 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thomas Per Krister Martinsson
Publisher :
ISBN 13 : 9789461911117
Total Pages : 296 pages
Book Rating : 4.9/5 (111 download)
Download or read book The Distribution of Mass Within Spiral Galaxies written by Thomas Per Krister Martinsson and published by . This book was released on 2011 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thilo Kranz
Publisher :
ISBN 13 :
Total Pages : 143 pages
Book Rating : 4.:/5 (59 download)
Download or read book Dark matter in spiral galaxies written by Thilo Kranz and published by . This book was released on 2002 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alain Mazure
Publisher : Springer Science & Business Media
ISBN 13 : 144198822X
Total Pages : 188 pages
Book Rating : 4.4/5 (419 download)
Download or read book Matter, Dark Matter, and Anti-Matter written by Alain Mazure and published by Springer Science & Business Media. This book was released on 2011-11-16 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Jazmin Esmeralda Berlanga Medina
Publisher :
ISBN 13 : 9781339318097
Total Pages : 136 pages
Book Rating : 4.3/5 (18 download)
Download or read book Dark Matter Halo Concentration and the Evolution of Spiral Structure in N-body, Barred Spiral Galaxies written by Jazmin Esmeralda Berlanga Medina and published by . This book was released on 2015 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Motivated by the evidence of relationships between pitch angle (the tightness of spiral arm structure in the disk), P, and various indicators of central mass concentration, as well as the theoretical relationship between halo mass concentration and the density of visible matter in the central part of the galaxy, we look at a possible relationship between P and cvir. (the virial concentration of the dark matter halo) in N-body simulations of barred, spiral galaxies. We also look at the evolution of pitch angle over time in higher temporal resolution than any data currently available in the literature. We find that pitch angle structure is recurring, the overall distribution staying within a relatively narrow range. We do not find evidence for a relation between P and cvir.
Author : Steven Soter
Publisher :
ISBN 13 : 9781565846029
Total Pages : 253 pages
Book Rating : 4.8/5 (46 download)
Download or read book Cosmic Horizons written by Steven Soter and published by . This book was released on 2001 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading scientists offer a collection of essays that furnish illuminating explanations of recent discoveries in modern astrophysics--from the Big Bang to black holes--the possibility of life on other worlds, and the emerging technologies that make such research possible, accompanied by incisive profiles of such key figures as Carl Sagan and Georges Lemaetre. Original.
Author : Charles Keeton
Publisher : Rutgers University Press
ISBN 13 : 0813572126
Total Pages : 112 pages
Book Rating : 4.8/5 (135 download)
Download or read book A Ray of Light in a Sea of Dark Matter written by Charles Keeton and published by Rutgers University Press. This book was released on 2014-04-30 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Markus Buchhorn
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (222 download)
Download or read book Dark Matter in Spiral Galaxies written by Markus Buchhorn and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sabino Matarrese
Publisher : Springer Science & Business Media
ISBN 13 : 9048186854
Total Pages : 413 pages
Book Rating : 4.0/5 (481 download)
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.
Author : Marc S Seigar
Publisher : Morgan & Claypool Publishers
ISBN 13 : 1681746107
Total Pages : 112 pages
Book Rating : 4.6/5 (817 download)
Download or read book Spiral Structure in Galaxies written by Marc S Seigar and published by Morgan & Claypool Publishers. This book was released on 2017-06-29 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: How does it happen that billions of stars can cooperate to produce the beautiful spirals that characterize so many galaxies, including ours? This book reviews the history behind the discovery of spiral galaxies and the problems faced when trying to explain the existence of spiral structure within them. In the book, subjects such as galaxy morphology and structure are addressed as well as several models for spiral structure. The evidence in favor or against these models is discussed. The book ends by discussing how spiral structure can be used as a proxy for other properties of spiral galaxies, such as their dark matter content and their central supermassive black hole masses, and why this is important.
Author : Alex Kristian Wong
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.:/5 (35 download)
Download or read book The Effects of Dark Matter on the Dynamics of Spiral Galaxies written by Alex Kristian Wong and published by . This book was released on 1994 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 030917113X
Total Pages : 222 pages
Book Rating : 4.3/5 (91 download)
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.
Author : Stephan E. Martin
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.:/5 (292 download)
Download or read book Infrared-HI Measurements of Dark Matter in Spiral Galaxies written by Stephan E. Martin and published by . This book was released on 1993 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lukas Grenacher
Publisher :
ISBN 13 :
Total Pages : 135 pages
Book Rating : 4.:/5 (638 download)
Download or read book Baryonic Dark Matter in Clusters and Spiral Galaxies written by Lukas Grenacher and published by . This book was released on 2001 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Val Blain
Publisher : Nova Publishers
ISBN 13 : 9781594542435
Total Pages : 272 pages
Book Rating : 4.5/5 (424 download)
Download or read book Progress in Dark Matter Research written by J. Val Blain and published by Nova Publishers. This book was released on 2005 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
