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Download or read book Formation of Galactic Halos in the Cold Dark Matter Universe written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The formation of structure on the galactic scale in the cold dark matter, .cap omega. = 1 universe is simulated.
Author : Colloquium on the Age of the Universe St
Publisher : National Academies Press
ISBN 13 : 0309060265
Total Pages : 274 pages
Book Rating : 4.3/5 (9 download)
Download or read book Colloquium on the Age of the Universe, Dark Matter, and Structure Formation written by Colloquium on the Age of the Universe St and published by National Academies Press. This book was released on 1998-01-01 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (727 download)
Download or read book Phase-space Structure of Cold Dark Matter Halos written by and published by . This book was released on 1991 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: A galactic halo of cold dark matter particles has a sheet-like structure in phase-space. The energy and momentum spectra of such particles on earth has a set of peaks whose central values and intensities form a record of the formation of the Galaxy. Scattering of the dark matter particles by stars and globular clusters broadens the peaks but does not erase them entirely. The giant shells around some elliptical galaxies may be a manifestation of this structure.
Author : Richard Morris
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.3/5 (91 download)
Download or read book Cosmic Questions written by Richard Morris and published by John Wiley & Sons. This book was released on 1993-10-08 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Morris draws on a multitude of startling new discoveries and theories in the field of cosmology and tackles 10 of the longest-standing and most captivating problems in all of science. Cosmic Questions offers clear explanations of the best current answers to each question.
Author : John N Bahcall
Publisher : World Scientific
ISBN 13 : 9814482714
Total Pages : 246 pages
Book Rating : 4.8/5 (144 download)
Download or read book Dark Matter In The Universe (Second Edition) - 4th Jerusalem Winter School For Theoretical Physics Lectures written by John N Bahcall and published by World Scientific. This book was released on 2004-09-03 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: If standard gravitational theory is correct, then most of the matter in the universe is in an unidentified form which does not emit enough light to have been detected by current instrumentation. This book is the second editon of the lectures given at the 4th Jerusalem Winter School for Theoretical Physics, with new material added. The lectures are devoted to the “missing matter” problem in the universe, the search to understand dark matter. The goal of this volume is to make current research work on unseen matter accessible to students without prior experience in this area and to provide insights for experts in related research fields. Due to the pedagogical nature of the original lectures and the intense discussions between the lecturers and the students, the written lectures included in this volume often contain techniques and explanations not found in more formal journal publications.
Author : Jerome Drexler
Publisher : Universal-Publishers
ISBN 13 : 1599428873
Total Pages : 287 pages
Book Rating : 4.5/5 (994 download)
Download or read book Our Universe Via Drexler Dark Matter written by Jerome Drexler and published by Universal-Publishers. This book was released on 2009 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is different from all other modern cosmology books in several ways. It introduces a cosmologic universe, which is orderly, logical, and systematic. It teaches and explains by illustrating how a variety of cosmic mysteries have been solved. It raises the status of dark matter in the universe by illuminating its roles as the principal source of energy, the principal source of matter in the form of hydrogen and helium, and the principal source of cosmic relationships with the principal cosmic phenomena of the universe. This book simplifies the universe as Nicolaus Copernicus' book simplified the solar system in 1543. With more and more cosmic mysteries being discovered and the slow progress in solving them, cosmologists and astrophysicists must re-train themselves to understand and to utilize the postmodern unified astrophysical cosmology model and to maximize the knowledge derived from the astronomical data. These are the three principal objectives of this book.
Author :
Publisher :
ISBN 13 :
Total Pages : 39 pages
Book Rating : 4.:/5 (16 download)
Download or read book The Secondary Infall Model of Galactic Halo Formation and the Spectrum of Cold Dark Matter Particles on Earth written by and published by . This book was released on 1996 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Società italiana di fisica
Publisher : IOS Press
ISBN 13 : 1614992177
Total Pages : 739 pages
Book Rating : 4.6/5 (149 download)
Download or read book Dark Matter in the Universe written by Società italiana di fisica and published by IOS Press. This book was released on 1996 with total page 739 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physics and astrophysics came to dark matter through many different routes, finally accepting it, but often with some distaste. It has been noticed that the existence of dark matter is yet another displacement of humans from the centre of the Universe: not only do our planet and our sun have no central position in the Universe, not only are humans just animals (although with a 'specialized' central nervous system), but even the material of which we are made is only a marginal component of the cosmic substance! If this is the right attitude to take, scientists feeling distaste for dark matter are much like Galileo Galilei's colleagues who refused to look through the telescope to watch the Medici planets. Nevertheless, astronomers, when required to take a ballot in favour of some cosmological model, often still vote for 'pure baryonic' with substantial majorities, although most cosmologists assume that a 'cold' component of dark matter plays a role in producing the world as we observe it. Among the many subjects covered by the book, particular emphasis was given to 1) summarizing the current status of the observations both of the distribution of the nearby galaxies and of the evolution of more distant galaxies; 2) advanced statistical techniques for quantifying structure in galaxy redshift and peculiar velocity surveys; 3) the art of cosmic inflation and models for dark matter candidates, and their implications for cosmic microwave background observations; 4) implications of cold dark matter variants for large scale structure, as worked out both by quasi-linear techniques and by fully nonlinear simulations; and 5) Eulerian and Lagrangian approximations for treating the nonlinear dynamics.
Author : Houjun Mo
Publisher : Cambridge University Press
ISBN 13 : 0521857937
Total Pages : 841 pages
Book Rating : 4.5/5 (218 download)
Download or read book Galaxy Formation and Evolution written by Houjun Mo and published by Cambridge University Press. This book was released on 2010-05-20 with total page 841 pages. Available in PDF, EPUB and Kindle. Book excerpt: A coherent introduction for researchers in astronomy, particle physics, and cosmology on the formation and evolution of galaxies.
Author : Jun Koda
Publisher :
ISBN 13 :
Total Pages : 322 pages
Book Rating : 4.:/5 (698 download)
Download or read book Gravitational Dynamics of Halo Formation in a Collisional Versus Collisionless Cold Dark Matter Universe written by Jun Koda and published by . This book was released on 2009 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flat cosmology with collisionless cold dark matter (CDM) and cosmological constant ([Lambda]CDM cosmology) may have some problems on small scales, even though it has been very successful on large scales. We study the effect of Self-Interacting Dark Matter (SIDM) hypothesis on the density profiles of halos. Collisionless CDM predicts cuspy density profiles toward the center, while observations of low mass galaxies prefer cored profiles. SIDM was proposed by Spergel & Steinhardt [161] as a possible solution to this cuspy profile problem on low-mass scales. On the other hand, observations and collisionless CDM agree on mass scales of galaxy clusters. It is also known that the SIDM hypothesis would contradict with X-ray and gravitational lensing observations of cluster of galaxies, if the cross section were too large. Our final goal is to find the range of SIDM scattering cross section models that are consistent with those astrophysical observations in two different mass scales. There are two theoretical approaches to compute the effect of self-interacting scattering -- Gravitational N-body simulation with Monte Carlo scattering and conducting fluid model; those two approaches, however, had not been confirmed to agree with each other. We first show that two methods are in reasonable agreement with each other for both isolated halos and for halos with realistic mass assembly history in an expanding [Lambda]CDM universe; the value of cross section necessary to have a maximally relaxed low-density core in [Lambda]CDM is in mutual agreement. We then develop a semianalytic model that predicts the time evolution of SIDM halo. Our semianalytic relaxation model enables us to understand how a SIDM halo would relax to a cored profile, and obtain an ensemble of SIDM halos from collisionless simulations with reasonable computational resources. We apply the semianalytic relaxation model to CDM halos, and compare the resulting statistical distribution of SIDM halos with astrophysical observations. We show that there exists a range of scattering cross sections that simultaneously solve the cuspy core problem on low-mass scales and satisfy the galaxy cluster observations. We also present that other potential conflicts between [Lambda]CDM and observations could be resolved in Part II and III.
Author : Mario Livio
Publisher : Cambridge University Press
ISBN 13 : 113944980X
Total Pages : 207 pages
Book Rating : 4.1/5 (394 download)
Download or read book The Dark Universe written by Mario Livio and published by Cambridge University Press. This book was released on 2004-02-26 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents especially written articles by a host of world experts working on all aspects of dark matter and theories of gravity. This is an indispensable collection of review articles for researchers and graduate students.
Author : M. Srednicki
Publisher : Elsevier
ISBN 13 : 0444596097
Total Pages : 382 pages
Book Rating : 4.4/5 (445 download)
Download or read book Particle Physics and Cosmology: Dark Matter written by M. Srednicki and published by Elsevier. This book was released on 2012-12-02 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: At least eighty percent of the mass of the universe consists of some material which, unlike ordinary matter, neither emits nor absorbs light. This book collects key papers related to the discovery of this astonishing fact and its profound implications for astrophysics, cosmology, and the physics of elementary particles. The book focuses on the likely possibility that the dark matter is composed of an as yet undiscovered elementary particle, and examines the boundaries of our present knowledge of the properties such a particle must possess.
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 : Scott Dodelson
Publisher : Academic Press
ISBN 13 : 0122191412
Total Pages : 462 pages
Book Rating : 4.1/5 (221 download)
Download or read book Modern Cosmology written by Scott Dodelson and published by Academic Press. This book was released on 2003-03-13 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: An advanced text for senior undergraduates, graduate students and physical scientists in fields outside cosmology. This is a self-contained book focusing on the linear theory of the evolution of density perturbations in the universe, and the anisotropiesin the cosmic microwave background.
Author : T. Padmanabhan
Publisher : Cambridge University Press
ISBN 13 : 9780521424868
Total Pages : 504 pages
Book Rating : 4.4/5 (248 download)
Download or read book Structure Formation in the Universe written by T. Padmanabhan and published by Cambridge University Press. This book was released on 1993 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text provides an up-to-date and pedagogical introduction to this exciting area of research.
Author : W. Groom
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (879 download)
Download or read book The Formation and Evolution of Galaxies in a Cold Dark Matter Universe written by W. Groom and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jean Audouze
Publisher : Atlantica Séguier Frontières
ISBN 13 : 9782863320570
Total Pages : 518 pages
Book Rating : 4.3/5 (25 download)
Download or read book Dark Matter written by Jean Audouze and published by Atlantica Séguier Frontières. This book was released on 1988 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
