Download or read book Full Sky Search for Ultrahigh Energy Cosmic Ray Anisotropies written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Using data from the SUGAR and the AGASA experiments taken during a 10 yr period with nearly uniform exposure to the entire sky, we search for anisotropy patterns in the arrival directions of cosmic rays with energies> 10{sup 19.6} eV. We determine the angular power spectrum from an expansion in spherical harmonics for modes out to l = 5. Based on available statistics, we find no significant deviation from isotropy. We compare the rather modest results which can be extracted from existing data samples with the results that should be forthcoming as new full-sky observatories begin operation.
Download or read book Introduction To Ultrahigh Energy Cosmic Ray Physics written by Pierre Sokolsky and published by CRC Press. This book was released on 2020-10-26 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revised edition provides an up-to-date summary of the field of ultra-high energy cosmic rays, dealing with their origin, propagation, and composition,. The authors reflect the enormous strides made since the first edition in the realm of experimental work, in particular the use of vastly improved, more sensitive and precise detectors. The level remains introductory and pedagogical, suitable for students and researchers interested in moving into this exciting field. Throughout the text, the authors focus on giving an introductory overview of the key physics issues, followed by a clear and concise description of experimental approaches and current results. Key Features: Updates the most coherent summary of the field available, with new text that provides the reader with clear historical context. Brand new discussion of contemporary space-based experiments and ideas for extending ground-based detectors. Completely new discussion of radio detection methods. Includes a new chapter on small to intermediate-scale anisotropy. Offers new sections on modern hadronic models and software packages to simulate showers.
Download or read book Large scale Anisotropies in the High Energy Cosmic Ray Sky written by Moritz Münchmeyer and published by . This book was released on 2012 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coverage and large scale anisotropies estimation methods for the Pierre Auger Observatory written by J. Ch Hamilton and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: When searching for anisotropies in the arrival directions of Ultra High Energy Cosmic Rays, one must estimate the number of events expected in each direction of the sky in the case of a perfect isotropy. We present in this article a new method, developed for the Auger Observatory, based on a smooth estimate of the zenith angle distribution obtained from the data itself (which is essentially unchanged in the case of the presence of a large scale anisotropy pattern). We also study the sensitivity of several methods to detect large-scale anisotropies in the cosmic ray arrival direction distribution : Rayleigh analysis, dipole fitting and angular power spectrum estimation.
Download or read book Methods for Probing New Physics at High Energies written by Peter B. Denton and published by . This book was released on 2016 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Tenth Marcel Grossmann Meeting written by M. Novello and published by World Scientific. This book was released on 2005 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 2005 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Energy Cosmic Ray Anisotropies Observed Using the Pierre Auger Observatory written by Kerridwen Bette Barber and published by . This book was released on 2014 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Pierre Auger Observatory is a hybrid cosmic ray detector located in the high plains of Argentina. It comprises an array of water-Cherenkov stations overlooked by four fluorescence detector sites and was designed and built for the purpose of studying ultra-high energy cosmic rays (>1018 eV). Due to the distribution of cosmic ray energies following a power law, in the process of studying these high energy events, the observatory also collects vast amounts of data on lower energy cosmic ray events. The low solar activity of the 2006 to 2009 period presents an opportunity to study the behaviour of the very low cosmic ray flux which would otherwise be overwhelmed by the solar wind during more active periods. This research aims to investigate the anisotropy in the low energy cosmic ray flux in the southern hemisphere using the calibration data for the Pierre Auger Observatory's surface detector. The energy ranges accessible via these calibration data were determined via numerical simulation of both air shower propagation through the atmosphere as well as the surface detector response to the surface particles, and were found to be of the order of 100 GeV. Following corrections to remove atmospheric and other spurious effects, investigations into the anisotropy present in the data were performed in both solar and sidereal time, spanning periods of both low and high solar activity.
Download or read book Ultra High Energy Hadron and Neutrino Astrophysics written by Peter K. F. Grieder and published by Elsevier. This book was released on 2025-06-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra-High Energy Hadron and Neutrino Astrophysics covers ultrahigh energy neutrino and hadron astronomy in the context of the search for the sources of the highest energy cosmic rays. It gives a broad and solid background for the newcomer to this field of research in the first few chapters, beginning with a comprehensive review of the evolution of astronomy, the present status of our knowledge on the cosmic radiation, discusses the interactions that are relevant for the propagation and detection of the cosmic radiation in space, in the atmosphere, and in the Earth's crust. The phenomenon of extensive air showers as a tool of hadron astronomy, spectral and compositional aspects of the high energy primary radiation, and the status of the anisotropy are treated comprehensively. This is followed by chapters on the interpretation of cosmic ray phenomena at high energies, and on the propagation of the cosmic radiation through galactic and extragalactic space. The subsequent chapters focus on the properties of muons and neutrinos, on the atmospheric neutrino background, and on astrophysical (cosmogenic) neutrinos. The basic detection principles are discussed and the different giant detector systems presented, including environmental aspects and background problems. The major experiments, in particular the successful IceCube experiment at Antarctica, are described and their results and interpretations discussed. - Provides a historic review of the field, summarizing the evolution of all branches of astronomy - Provides a broad introduction to ultra-high-energy cosmic rays and high-energy astrophysical neutrinos - Covers the prerequisites for students in UHE neutrino and hadron astronomy, and astrophysics - Includes numerous figures and graphs to support the text - Features a list of over 1500 references and an extensive subject index
Download or read book Tenth Marcel Grossmann Meeting The On Recent Developments In Theoretical Experimental General Relativity Gravitation Relativistic Field Theories In 3 Vols Procs Of The Mgio Meeting Held At Brazilian Ctr For Res In Phys Cbpf written by Mario Novello and published by World Scientific. This book was released on 2006-02-17 with total page 2642 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Marcel Grossmann meetings were conceived to promote theoretical understanding in the fields of physics, mathematics, astronomy and astrophysics and to direct future technological, observational, and experimental efforts. They review recent developments in gravitation and general relativity, with major emphasis on mathematical foundations and physical predictions. Their main objective is to bring together scientists from diverse backgrounds and their range of topics is broad, from more abstract classical theory and quantum gravity and strings to more concrete relativistic astrophysics observations and modeling.This Tenth Marcel Grossmann Meeting was organized by an international committee composed of D Blair, Y Choquet-Bruhat, D Christodoulou, T Damour, J Ehlers, F Everitt, Fang Li Zhi, S Hawking, Y Ne'eman, R Ruffini (chair), H Sato, R Sunyaev, and S Weinberg and backed by an international coordinating committee of about 135 members from scientific institutions representing 54 countries. The scientific program included 29 morning plenary talks during 6 days, and 57 parallel sessions over five afternoons, during which roughly 500 papers were presented.These three volumes of the proceedings of MG10 give a broad view of all aspects of gravitation, from mathematical issues to recent observations and experiments.
Download or read book Ultra High Energy Gamma Ray Point Sources and Cosmic Ray Anisotropy written by Lilian Joan Graham and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances In Very High Energy Astrophysics The Science Program Of The Third Generation Iacts For Exploring Cosmic Gamma Rays written by Reshmi Mukherjee and published by World Scientific. This book was released on 2024-09-03 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: Very-high-energy astrophysics studies the most energetic photons in the sky, allowing the exploration of violent and extreme non-thermal phenomena in the Universe. Significant advances in knowledge have been made in this field using ground-based imaging atmospheric Cherenkov telescopes (IACTs) as detectors, to study these physical processes in the Universe. This book reviews the progress in the field since the advent of the second generation IACTs around 2004. Going through the scientific highlights obtained by the three current instruments of this kind, H.E.S.S., MAGIC and VERITAS, operating now for more than 15 years, this book presents a state-of-the-art knowledge in four areas of modern astrophysics and cosmology, namely the origin of the cosmic rays, the physics of compact objects and their resulting relativistic outflows, gamma-ray cosmology, and the search for dark matter. Along with a detailed review of the outstanding scientific outcomes, a summary of the key technological developments that yielded the recognized success of the technique is also provided.This book is written for early-career academics in the fields of astrophysics, high energy physics and cosmology. At the same time, it can serve as a source of reference for the expert in the field.
Download or read book Observational Astronomy written by Edmund C. Sutton and published by Cambridge University Press. This book was released on 2011-10-13 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronomy is fundamentally an observational science and as such it is important for astronomers and astrophysicists to understand how their data are collected and analyzed. This book is a comprehensive review of current observational techniques and instruments. Featuring instruments such as Spitzer, Herschel, Fermi, ALMA, Super-Kamiokande, SNO, IceCube, the Auger Observatory, LIGO and LISA, the book discusses the capabilities and limitations of different types of instruments. It explores the sources and types of noise and provides statistical tools necessary for interpreting observational data. Due to the increasingly important role of statistical analysis, the techniques of Bayesian analysis are discussed, along with sampling techniques and model comparison. With topics ranging from fundamental subjects such as optics, photometry and spectroscopy, to neutrinos, cosmic rays and gravitational waves, this book is essential for graduate students in astronomy and physics. Electronic and colour versions of selected figures are available online at www. cambridge.org/9781107010468.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-12 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Very High Energy Cosmic Gamma Radiation A Crucial Window On The Extreme Universe written by Felix A Aharonian and published by World Scientific. This book was released on 2004-07-19 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gamma ray astronomy, the branch of high energy astrophysics that studies the sky in energetic γ-ray photons, is destined to play a crucial role in the exploration of nonthermal phenomena in the Universe in their most extreme and violent forms. The great potential of this discipline offers impressive coverage of many “hot topics” of modern astrophysics and cosmology, such as the origin of galactic and extragalactic cosmic rays, particle acceleration and radiation processes under extreme astrophysical conditions, and the search for dark matter. The recent observational results and exciting theoretical predictions provide a strong rationale for a deep study of cosmic radiation with forthcoming satellite-borne and ground-based detectors in the so-called very high energy domain of the electromagnetic spectrum above 1010 eV.This invaluable book presents the motivations and highlights the principal objectives of the field, as well as demonstrates its intrinsic links to other branches of high energy astrophysics. Preference is given to three topical areas: (i) origin of cosmic rays; (ii) physics and astrophysics of relativistic jets; (iii) observational gamma ray cosmology. Also, an essential part of the book is devoted to the discussion of the principal mechanisms of production and absorption of energetic γ-rays in different astrophysical environments, as well as to the description of the detection methods of high energy cosmic γ-radiation.
Download or read book Literature 1991 Part 2 written by Astronomisches Rechen-Institut and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 1592 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Astronomy and Astrophysics Abstracts" appearing twice a year has become oneof the fundamental publications in the fields of astronomy, astrophysics andneighbouring sciences. It is the most important English-language abstracting journal in the mentioned branches. The abstrats are classified under more than a hundred subject categories, thus permitting a quick survey of the whole extended material. The AAA is a valuable and important publication for all students and scientists working in the fields of astronomy and related sciences. As such it represents a necessary ingredient of any astronomical library all over the world.
