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Cosmic Gamma-Ray Sources

Cosmic Gamma-Ray Sources PDF Author: K.S. Cheng
Publisher: Springer Science & Business Media
ISBN: 1402022565
Category : Science
Languages : en
Pages : 408

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Book Description
Gamma-ray astronomy has undergone an enormous progress in the last 15 years. The success of satellite experiments like NASA's Comp ton Gamma-Ray Observatory and ESA's INTEGRAL mission, as well as of ground-based instruments have open new views into the high-energy Universe. Different classes of cosmic gamma-ray sources have been now detected at different energies, in addition to young radio pulsars and gamma-ray bursts, the classical ones. The new sources include radio quiet pulsars, microquasars, supernova remnants, starburst galaxies, ra dio galaxies, flat-spectrum radio quasars, and BL Lacertae objects. A large number of unidentified sources strongly suggests that this brief enumeration is far from complete. Gamma-ray bursts are now estab lished as extragalactic sources with tremendous energy output. There is accumulating evidence supporting the idea that massive stars and star forming regions can accelerate charged particles up to relativistic ener gies making them gamma-ray sources. Gamma-ray astronomy has also proved to be a powerful tool for cosmology imposing constraints to the background photon fields that can absorb the gamma-ray flux from dis tant sources. All this has profound implications for our current ideas about how particles are accelerated and transported in both the local and distant U niverse. The evolution of our knowledge on the gamma-ray sky has been so fast that is not easy for the non-specialist scientist and the graduate student to be aware of the full potential of this field or to grasp the fundamentals of a given topic in order to attempt some original contribution.

Cosmic Gamma-Ray Sources

Cosmic Gamma-Ray Sources PDF Author: K.S. Cheng
Publisher: Springer Science & Business Media
ISBN: 1402022565
Category : Science
Languages : en
Pages : 408

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Book Description
Gamma-ray astronomy has undergone an enormous progress in the last 15 years. The success of satellite experiments like NASA's Comp ton Gamma-Ray Observatory and ESA's INTEGRAL mission, as well as of ground-based instruments have open new views into the high-energy Universe. Different classes of cosmic gamma-ray sources have been now detected at different energies, in addition to young radio pulsars and gamma-ray bursts, the classical ones. The new sources include radio quiet pulsars, microquasars, supernova remnants, starburst galaxies, ra dio galaxies, flat-spectrum radio quasars, and BL Lacertae objects. A large number of unidentified sources strongly suggests that this brief enumeration is far from complete. Gamma-ray bursts are now estab lished as extragalactic sources with tremendous energy output. There is accumulating evidence supporting the idea that massive stars and star forming regions can accelerate charged particles up to relativistic ener gies making them gamma-ray sources. Gamma-ray astronomy has also proved to be a powerful tool for cosmology imposing constraints to the background photon fields that can absorb the gamma-ray flux from dis tant sources. All this has profound implications for our current ideas about how particles are accelerated and transported in both the local and distant U niverse. The evolution of our knowledge on the gamma-ray sky has been so fast that is not easy for the non-specialist scientist and the graduate student to be aware of the full potential of this field or to grasp the fundamentals of a given topic in order to attempt some original contribution.

Gamma-ray Evidence for Cosmic-ray Sources

Gamma-ray Evidence for Cosmic-ray Sources PDF Author: Martin John Rogers
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Very High Energy Cosmic Gamma Radiation

Very High Energy Cosmic Gamma Radiation PDF Author: F A Aharonian
Publisher: World Scientific
ISBN: 981449139X
Category : Science
Languages : en
Pages : 512

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Book Description
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

Discrete Sources of Cosmic Gamma-rays

Discrete Sources of Cosmic Gamma-rays PDF Author: P. A. Riley
Publisher:
ISBN:
Category : Galaxies
Languages : en
Pages : 29

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Nuclear Science Abstracts

Nuclear Science Abstracts PDF Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages :

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Search for Discrete Sources of High Energy Cosmic Gamma Rays

Search for Discrete Sources of High Energy Cosmic Gamma Rays PDF Author: Hakkı Boran Ögelman
Publisher:
ISBN:
Category : Cosmic rays
Languages : en
Pages : 150

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Cosmic Gamma Rays

Cosmic Gamma Rays PDF Author: Floyd William Stecker
Publisher:
ISBN:
Category : Gamma ray astronomy
Languages : en
Pages : 246

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Book Description
"The scientific potential of y-ray astronomy has long been recognized from a theoretical standpoint by investigators in the fields of cosmic-ray research and high-energy astrophysics. Gamma-ray studies can help answer questions concerning the nature and origin of cosmic rays, both galactic and extragalactic : the nature of supernovae, pulsars, and powerful radio sources; the extent and importance of antimatter in the universe; and the nature of the universe in the distant past. The advent of satellite-borne y-ray telescopes has recently made y-ray astronomy a reality. The first observations, as discussed in this book, have already provided important information on galactic and extragalactic cosmic rays and interstellar gas. These observations may also have great cosmological significance. The second generation of y-ray telescopes is already in the development stage. It therefore seems most appropriate at this time for a comprehensive theoretical monograph."--Page iii.

The Multi-Messenger Approach to High-Energy Gamma-Ray Sources

The Multi-Messenger Approach to High-Energy Gamma-Ray Sources PDF Author: Josep M. Paredes
Publisher: Springer Science & Business Media
ISBN: 140206117X
Category : Science
Languages : en
Pages : 544

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Book Description
This book provides a theoretical and observational overview of the state of the art of gamma-ray astrophysics, and their impact and connection with the physics of cosmic rays and neutrinos. With the aim of shedding new and fresh light on the problem of the nature of the gamma-ray sources, particularly those yet unidentified, this book summarizes contributions to a workshop that continues today.

The Universe in Gamma Rays

The Universe in Gamma Rays PDF Author: Volker Schönfelder
Publisher: Springer Science & Business Media
ISBN: 3662045931
Category : Science
Languages : en
Pages : 409

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Book Description
After describing cosmic gamma-ray production and absorption, the instrumentation used in gamma-ray astronomy is explained. The main part of the book deals with astronomical results, including the somewhat surprising result that the gamma-ray sky is continuously changing.

The Multi-Messenger Approach to High-Energy Gamma-Ray Sources

The Multi-Messenger Approach to High-Energy Gamma-Ray Sources PDF Author: Josep M. Paredes
Publisher: Springer Science & Business Media
ISBN: 1402061188
Category : Science
Languages : en
Pages : 544

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Book Description
This book provides a theoretical and observational overview of the state of the art of gamma-ray astrophysics, and their impact and connection with the physics of cosmic rays and neutrinos. With the aim of shedding new and fresh light on the problem of the nature of the gamma-ray sources, particularly those yet unidentified, this book summarizes contributions to a workshop that continues today.