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Author : Yasushi Muraki
Publisher : Unknown
Page : 262 pages
File Size : 49,9 Mb
Release : 2004
Category : Cosmic rays
ISBN : UCLA:L0091275206
Author : Roberto Battiston,Bruna Bertucci
Publisher : World Scientific
Page : 269 pages
File Size : 48,5 Mb
Release : 2002
Category : Science
ISBN : 9789812776808
This book presents the progress in cosmic ray physics following the recent results obtained by balloon, satellite and underground experiments. The following topics are reviewed: Composition and propagation of cosmic rays, trapping of charged particles in the earth''s magnetic field, atmospheric neutrinos, and high energy photon measurements in space.
Author : Yasushi Muraki
Publisher : Unknown
Page : 246 pages
File Size : 41,6 Mb
Release : 2004
Category : Astrophysics
ISBN : OCLC:56757863
Author : Andrea Albert
Publisher : Morgan & Claypool Publishers
Page : 70 pages
File Size : 45,7 Mb
Release : 2016-09-06
Category : Science
ISBN : 9781681742700
Searching for Dark Matter with Cosmic Gamma Rays summarizes the evidence for dark matter and what we can learn about its particle nature using cosmic gamma rays. It has almost been 100 years since Fritz Zwicky first detected hints that most of the matter in the Universe that doesn't directly emit or reflect light. Since then, the observational evidence for dark matter has continued to grow. Dark matter may be a new kind of particle that is governed by physics beyond our Standard Model of particle physics. In many models, dark matter annihilation or decay produces gamma rays. There are a variety of instruments observing the gamma-ray sky from tens of MeV to hundreds of TeV. Some make deep, focused observations of small regions, while others provide coverage of the entire sky. Each experiment offers complementary sensitivity to dark matter searches in a variety of target sizes, locations, and dark matter mass scales. We review results from recent gamma-ray experiments including anomalies some have attributed to dark matter. We also discuss how our gamma-ray observations complement other dark matter searches and the prospects for future experiments.
Author : Anonim
Publisher : Unknown
Page : 40 pages
File Size : 55,7 Mb
Release : 1994
Category : Astrophysics
ISBN : CHI:76792140
Author : Jerome Drexler
Publisher : Universal-Publishers
Page : 292 pages
File Size : 42,8 Mb
Release : 2008
Category : Science
ISBN : 9781599429878
Learn how a world-class inventor-scientist is currently tackling the greatest scientific mysteries of the universe -- and succeeding. With his new book, Drexler provides a viable baseline to jump-start debate on a standard model for postmodern cosmology. It is the first book to not only address these seven unsolved cosmic mysteries, shown in this book's subtitle, but also offer plausible explanations for each of them. The correlation of these seven cosmic phenomena by Drexler offers a revolutionary advance in cosmological research and potentially broad acceptance and use of the related concepts. This book was written for open-minded cosmologists, astronomers, astrophysicists, physicists, engineers, students, enthusiasts and those at NASA, NSF, DOE and ESO who want to understand postmodern cosmology. The author's five years of cosmology research, and his successes, convinced him that his postmodern cosmology model is correctly based upon the relationships and linkages of these seven cosmic phenomena.
Author : Giorgio Giacomelli,Maurizio Spurio,Jamal Eddine Derkaoui
Publisher : Springer Science & Business Media
Page : 360 pages
File Size : 54,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401006347
Non-accelerator particle physicists, especially those studying neutrino oscillation experiments, will read with profit the in-depth discussions of new results and their interpretations. new guidelines are also set out for new developments in this and related fields. Discussions are presented of neutrino oscillations, neutrino astronomy, high energy cosmic rays, gravitational waves, magnetic monopoles and dark matter. The future large-scale research projects discussed include the experiments on long baseline neutrino beams from CERN to Gran Sasso and Fermilab to the Soudan mine; large underwater and under-ice experiments; the highest energy cosmic rays; gravitational waves; and the search for new particles and new phenomena.
Author : Jerome Drexler
Publisher : Universal-Publishers
Page : 287 pages
File Size : 53,8 Mb
Release : 2009
Category : Science
ISBN : 9781599428871
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 : Jerome Drexler
Publisher : Universal-Publishers
Page : 164 pages
File Size : 45,6 Mb
Release : 2004
Category : Science
ISBN : 1581125518
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 : Michael Smith
Publisher : BoD – Books on Demand
Page : 136 pages
File Size : 44,5 Mb
Release : 2022-07-06
Category : Science
ISBN : 9781839624407
This book presents several new, important explanations for dark matter, all dissimilar to the discredited subatomic particle-like but invisible matter. One chapter presents evidence that abundant cold hydrogen, baryonic matter, is the source of the missing gravity. Another chapter suggests that dark matter is better explained by stars in spiral galaxies that follow non-Keplerian orbits. A third chapter proposes that gravity attributed to dark matter is due to the sprinkling of black holes throughout galaxies, which is supported by LIGO/Virgo observations. Another chapter questions the assumptions of the Friedmann (FLRW) model, proposing a better method for handling astrophysical data. Additional chapters discuss cosmic ray propagation, axion decay, the cosmological scale factor, and the philosophical outlook of cosmologists when dealing with the questions of dark matter and dark energy.
Author : Charles Dermer,Govind Menon
Publisher : Princeton University Press
Page : 560 pages
File Size : 53,5 Mb
Release : 2009-10-11
Category : Science
ISBN : 9780691144085
Beginning with Einstein's special and general theories of relativity, the authors give a detailed mathematical description of fundamental astrophysical radiation processes, including Compton scattering of electrons and photons, synchrotron radiation of particles in magnetic fields, and much more.
Author : Minos Axenides,George Fanourakis,John Vergados
Publisher : World Scientific
Page : 704 pages
File Size : 53,5 Mb
Release : 2007
Category : Science
ISBN : 9789812770288
This volume is the latest in a prominent biannual series of scientific meetings on the exciting research topics of dark matter and, more recently, of dark energy. It contains a state-of-the-art update on detection efforts by experimental groups around the world trying to pin down exotic new forms of matter under the names of axions, neutralinos, wimps, primordial black holes, q balls, sterile neutrinos, as well as a tantalizing new form of dark energy component called phantom energy and quintessence. The book is self-contained as it also includes general reviews on recent cosmological observations OCo supernovae measurements, cosmic matter distribution surveys and cosmic radiation anisotropies OCo introducing even the uninitiated reader to this fascinating frontier of research."
Author : Gregory Leonard LaScola
Publisher : Unknown
Page : 86 pages
File Size : 54,9 Mb
Release : 1999
Category : Baryons
ISBN : UCR:31210013664303
Author : J. Val Blain
Publisher : Nova Publishers
Page : 272 pages
File Size : 40,6 Mb
Release : 2005
Category : Science
ISBN : 1594542430
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 : Kazuharu Bamba
Publisher : MDPI
Page : 236 pages
File Size : 55,9 Mb
Release : 2019-11-14
Category : Science
ISBN : 9783039217649
Various cosmological observations support not only cosmological inflation in the early universe, which is also known as exponential cosmic expansion, but also that the expansion of the late-time universe is accelerating. To explain this phenomenon, the existence of dark energy is proposed. In addition, according to the rotation curve of galaxies, the existence of dark matter, which does not shine, is also suggested. If primordial gravitational waves are detected in the future, the mechanism for realizing inflation can be revealed. Moreover, there exist two main candidates for dark matter. The first is a new particle, the existence of which is predicted in particle physics. The second is an astrophysical object which is not found by electromagnetic waves. Furthermore, there are two representative approaches to account for the accelerated expansion of the current universe. One is to assume the unknown dark energy in general relativity. The other is to extend the gravity theory to large scales. Investigation of the origins of inflation, dark matter, and dark energy is one of the most fundamental problems in modern physics and cosmology. The purpose of this book is to explore the physics and cosmology of inflation, dark matter, and dark energy.