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Author : V. I. Ginzburg
Publisher : Unknown
Page : 6 pages
File Size : 50,5 Mb
Release : 1954
Category : Cosmic rays
ISBN : UOM:39015095114883
Author : M.M. Shapiro,Rein Silberberg,John P. Wefel
Publisher : Springer Science & Business Media
Page : 346 pages
File Size : 48,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401131582
The Galactic cosmic rays have far-reaching effects on the interstellar medium, and they are, in turn, profoundly affected by the particles and fields in space. Supernova remnants and their expanding shock fronts pervade the Galaxy, heating the interstellar medium, and accelerating the cosmic rays. The interplay among the cosmic rays, the interstellar medium in which they propagate, and supernovae has been investigated for decades; yet these studies have generated as many enigmas as they have resolved. These puzzles continue to challenge observers and theorists alike. th This volume is devoted to selected lectures presented in the 7 Course of the International School of Cosmic-Ray Astrophysics in Erice, Italy in July-August, 1990. Alltogether, some 400 participants have attended the biennial sessions of this School since its inception in 1978. As its name implies, the School deals with cosmic-ray phenomena viewed in the broader context of astrophysics. Students and Lecturers are attracted from many astrophysical disciplines. Like earlier courses in this series, the present one was organized under the aegis of the Ettore Majorana Centre as a NATO Advanced Study Institute. Given the diverse scientific backgrounds of the students, it was deemed useful to include lectures at the introductory level. Other lectures and contributed talks were at a more advanced level, featuring new developments. If this collection is useful pedagogically, and if it provides some stimulus and information for the mature research worker, then the editors will feel well rewarded.
Author : Paul Murdin,Lesley Murdin
Publisher : Cambridge University Press
Page : 200 pages
File Size : 50,8 Mb
Release : 1985-11-07
Category : Science
ISBN : 052130038X
This revised 1985 edition tells the story of supernovae, capturing the flavour of ancient astronomy.
Author : I. S. Shklovskiĭ
Publisher : Unknown
Page : 476 pages
File Size : 52,8 Mb
Release : 1968
Category : Science
ISBN : UOM:39015017184147
Author : Laurence A. Marschall
Publisher : Springer
Page : 303 pages
File Size : 44,9 Mb
Release : 2013-11-11
Category : Science
ISBN : 9781489963017
Astronomers believe that a supernova is a massive explosion signaling the death of a star, causing a cosmic recycling of the chemical elements and leaving behind a pulsar, black hole, or nothing at all. In an engaging story of the life cycles of stars, Laurence Marschall tells how early astronomers identified supernovae, and how later scientists came to their current understanding, piecing together observations and historical accounts to form a theory, which was tested by intensive study of SN 1987A, the brightest supernova since 1006. He has revised and updated The Supernova Story to include all the latest developments concerning SN 1987A, which astronomers still watch for possible aftershocks, as well as SN 1993J, the spectacular new event in the cosmic laboratory.
Author : O. H. Guseinov,Efe Yazgan,Askin Ankay
Publisher : Unknown
Page : 212 pages
File Size : 42,6 Mb
Release : 2007
Category : Science
ISBN : UOM:39015074241954
In the 1930s scientists discovered that the universe is expanding and that it is quite old. The observation of hydrogen lines in the spectrum of the sun helped Niels Bohr construct his atomic model in 1912, and understand the optical spectra of atoms. This era marked the transition of astronomy into astrophysics. With the rapid technological progress, scientists were able to study the universe in different ways that enabled them to observe what could not be observed using ordinary telescopes. Technology enabled scientists to see the universe in x-rays, gamma rays, radio waves and even look inside stars with neutrinos. One of the most important results of these developments, the observation of very high energy particles from cosmic distances, led to a complete new branch of physics, namely high energy physics, and provided a valuable tool to understand the very high energy processes going on in the universe such as in shock fronts of supernova remnants. In the 1960s very important discoveries in astrophysics like the microwave background radiation from the Big Bang, quasars, X-ray binaries, pulsars and cosmic X-ray sources followed. A significant interest in astrophysics prevailed and many physicists began to work on these new objects and processes. Among many great physicists, Yakov B. Zeldovich and Igor D. Novikov are worth noting especially because of their efforts which accelerated the theoretical and phenomenological researches in all of these branches of astrophysics. Astrophysics began to push the boundaries of physics and our world view. Astrophysical results were rewarded with Nobel prizes. Three of these Nobel prizes (1974, 1993, 2002) were given to works on neutron stars. This book is mainly devoted to neutron stars and to objects related to them.
Author : Albert G. Petschek
Publisher : Springer Science & Business Media
Page : 304 pages
File Size : 47,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781461232865
For millennia mankind has watched as the heavens move in their stately progression from night to night and from year to year, presaging with their changes the changing seasons. The sun, the moon, and the planets move in what appears to be an unchanging firmament, except occasionally when a new "star" appears. Among the new stars there are comets, novae, and finally supernovae, the subject of this book. Superstitious mankind regarded these events as significant portents and recorded them carefully so that we have records of supernovae that may reach back as far as 1300 B. C. (Clark and Stephenson, 1977; Murdin and Murdin, 1985). The Cygnus Loop, believed to be a 15,000-year-old supernova remnant at a distance of only 800 pc (Chevalier and Seward, 1988), must have awed our ancestors. Tycho's supernova of 1572, at a distance of 2500 pc, had a magnitude of -4. 0, comparable to Venus at its brightest, and Kepler's supernova of 1604 had a magnitude of - 3 or so. Thus the Cygnus Loop supernova might have had a magnitude of - 6 or so, and should have been readily visible in daytime. A supernova in Vela, about 8000 B. C. was comparably close, as was SN 1006, whose magnitude may have been -9. While most of the supernova records come from the Old World, the supernova of 1054 is recorded in at least one petroglyph in the American West.
Author : F A Aharonian
Publisher : World Scientific
Page : 512 pages
File Size : 47,7 Mb
Release : 2004-07-19
Category : Science
ISBN : 9789814491396
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. Contents:Status of the FieldGamma Ray Production and Absorption MechanismsGamma Rays and Origin of Galactic Cosmic RaysGamma Ray Visibility of Supernova RemnantsPulsars, Pulsar Winds, PlerionsGamma Rays Expected from MicroquasarsLarge Scale Jets of Radio Galaxies and QuasarsNonthermal Phenomena in Clusters of GalaxiesTeV Blazars and Cosmic Background RadiationHigh Energy Gamma Rays — Carriers of Unique Cosmological Information Readership: Astrophysicists, cosmic ray physicists, cosmologists and high energy physicists. Keywords:Reviews:“The author has been an active player in the pioneering experiments that opened the ‘last electromagnetic window’ at photon energies beyond GeV, or wavelengths smaller than 10–13 cm. This is a timely in-depth review of gamma ray astronomy, a field exploding with new instrumentation: space-borne detectors aiming for astronomy with thousands of sources and ground-based detectors hunting for the origin of the cosmic rays, still enigmatic one century after their discovery.”Francis Halzen University of Wisconsin “‘Very high-energy gamma-ray astronomy’ is now beginning to play a crucial role in understanding the high-energy phenomena in the Universe. Flix Ahranonian clearly describes the implication of this new developing field relating to Cosmic-ray Physics, X-ray and low energy gamma-ray astronomy, Potential Extragalactic sources and Cosmologies and dark matter … His writing covers what is known, what is to be explored in future, and also speculating on some new exciting unknown phenomena. He is one of the pioneers and a leading scientist in this field, and this book is timely and valuable for the students and researchers in this field which developed so quickly in recent years together with the scientists who have interest and wish to understand and research the high-energy phenomena in the Universe.”Emeritus Professor Jun Nishimura The University of Tokyo, and Institute of Space and Astronuatical Science “In the entire text Aharonian attaches importance to analytic descriptions. He outlined, discusses and quotes numerous model calculations as well as an abundance of experimental data. The Bibliography is very extensive. This is a recommendable book.”Physik Journal
Author : Maurice Mandel Shapiro,Todor Stanev,J. P. Wefel
Publisher : World Scientific
Page : 239 pages
File Size : 51,7 Mb
Release : 2007
Category : Science
ISBN : 9789812790156
This book introduces young researchers to the exciting field of ultra-high energy astrophysics including charged particles, gamma rays and neutrinos. At ultra-high energy the radiation is produced by interactions of cosmic ray particles accelerated in explosive events such as supernovae or hypernovae, black holes or, possibly, the big bang. Through direct contact with senior scientists, now actively planning the next generation of experiments/models, the excitement and motivation for research at ultra-high energy was conveyed. The underpinning of these fields is a synthesis of knowledge and techniques from nuclear and particle physics, astronomy and cosmology. Informing the participants of this background, how it was derived, and the new challenges for the future are the major goal. Further, the course has helped to foster new astrophysical research and promoted contacts, which have resulted in new collaborations. Sample Chapter(s). Chapter 1: Gamma-Ray Burst: Discoveries With Swift (352 KB). Contents: Powerful Astrophysical Sources: Gamma Ray Bursts: Discoveries with Swift (A Wells); Gamma Ray Burst Phenomenology in the Swift Era (P M(r)sziros); The Nature of Dark Matter (P L Biermann & F Munyaneza); Cosmic Rays: Particle Acceleration and Propagation in the Galaxy (V S Ptuskin); GRB as Sources of Ultra-High Energy Particles (P M(r)sziros); The KASCADE-Grande Experiment (F Cossavela et al.); Gamma Ray and Neutrino Astronomy: Study of Galactic Gamma Ray Sources with Milagro (J Goodman); The GLAST Mission and Observability of Supernovae Remnants (O Tibolla); First Results from AMANDA using TWR System (A Silvestri); and other papers. Readership: Academics in astrophysics, high energy, cosmology and earth science."
Author : Anonim
Publisher : Unknown
Page : 298 pages
File Size : 50,5 Mb
Release : 1957
Category : Cosmogony
ISBN : UCSC:32106020761067
Author : Jacco Vink
Publisher : Springer Nature
Page : 532 pages
File Size : 53,5 Mb
Release : 2020-11-10
Category : Science
ISBN : 9783030552312
Written by a leading expert, this monograph presents recent developments on supernova remnants, with the inclusion of results from various satellites and ground-based instruments. The book details the physics and evolution of supernova remnants, as well as provides an up-to-date account of recent multiwavelength results. Supernova remnants provide vital clues about the actual supernova explosions from X-ray spectroscopy of the supernova material, or from the imprints the progenitors had on the ambient medium supernova remnants are interacting with - all of which the author discusses in great detail. The way in which supernova remnants are classified, is reviewed and explained early on. A chapter is devoted to the related topic of pulsar wind nebulae, and neutron stars associated with supernova remnants. The book also includes an extended part on radiative processes, collisionless shock physics and cosmic-ray acceleration, making this book applicable to a wide variety of astronomical sub-disciplines. With its coverage of fundamental physics and careful review of the state of the field, the book serves as both textbook for advanced students and as reference for researchers in the field.
Author : American Machine & Foundry Co. Research & Development Division, Alexandria, Va
Publisher : Unknown
Page : 232 pages
File Size : 47,6 Mb
Release : 1962
Category : Electronic
ISBN : IND:30000090360839
Author : American Machine and Foundry Company. Research and Development Division
Publisher : Unknown
Page : 242 pages
File Size : 40,7 Mb
Release : 1962
Category : Electronic
ISBN : UGA:32108004508647
The Space Radiation Guide is intended to be a reliable, easily understood handbook that will provide the reader with sufficient knowledge of the nature of space radiations to permit him to comprehend the total space radiation problem as it pertains to the hazards of manned space flight. The report is not intended to provide answers to all the problems, but, instead, to present much of the factual data currently known and to point out areas where information is sketchy and inconclusive. The radiations considered are cosmic rays, solar radiation, and the geomagnetically trapped (Van Allen) radiations. Included are chapters on instruments used for measuring these radiations, on shielding techniques, and on biological effects. (Author).
Author : Anonim
Publisher : Unknown
Page : 744 pages
File Size : 46,7 Mb
Release : 1975
Category : Nuclear energy
ISBN : UOM:39015023546420
Author : Vitaliĭ Lazarevich Ginzburg
Publisher : Unknown
Page : 84 pages
File Size : 43,8 Mb
Release : 1969
Category : Astrophysics
ISBN : UIUC:30112058579878