Author: Eddie Michael ZanrossoPublisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 362
Book Description
Medium Energy Gamma Rays from the Galactic Center Region
Author: Eddie Michael ZanrossoPublisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 362
Book Description
Observations of Medium Energy Gamma Ray Emission from the Galactic Center Region
Author: D.A. KniffenGamma-ray Astronomy
Author: P. V. Ramana MurthyPublisher: Cambridge University Press
ISBN: 0521420814
Category : Nature
Languages : en
Pages : 275
Book Description
The recent launch of NASA's Gamma-Ray Observatory will increase interest in gamma-ray astronomy. This is a fully up-dated new edition of the authors' earlier volume published in 1986 and covers both the background science and the current state-of-the-art in this field. The emphasis is on the astronomy and astrophysics of known sources of cosmic gamma-rays outside the solar system. The authors discuss the mechanisms for the production and absorption of gamma-rays. The gamma-ray line astronomy of the interstellar medium, galactic centre, and various discrete sources is then considered. Gamma-ray bursts are treated in considerable detail in chapter three, and the final two chapters describe medium energy and ultra-high energy gamma-rays. Relevant data from supernova SN1987A is also included in this edition. The book includes comprehensive references to the primary literature, together with many figures and tables. The concentration on phenomenology makes this book a fine introduction to gamma-ray astronomy.
Gamma-Ray Astronomy
Author: E.L. ChuppPublisher: Springer Science & Business Media
ISBN: 9401014965
Category : Science
Languages : en
Pages : 332
Book Description
Observation of discrete energy electromagnetic emissions from celestial objects in the radio, IR, optical, lN, and X-ray spectral regions has dramatically advanced our know ledge in the field of astrophysics. It is expected that identification of nuclear 'Y-ray line emissions from any cosmic source would also prove to be a powerful new tool for probing the Universe. Since the publication of Morrison's work in 1958, many experiments were carried out searching for evidence of 'Y-ray lines from cosmic sources, however with little success. Only a few positive experimental results have been reported, in spite of an expenditure of considerable effort by many people: in particular, the possible Galactic Center emission line (473 to 530keV) and 'Y-ray lines at several energies (e. g. , 0. 5 MeV and 2. 2 MeV) associated with large solar flares. Both of these observations are unconfirmed by indepen dent observations (ca. 1975). The high energy 'Y-rays (>30MeV) from the Galactic Center are at least partly due to the decay of 1[0 mesons, which are of unique energy (67. 5 MeV) in the 1[0 rest frame only. The reasons for the limited amount of data avail able in this field, even though early theoretical predictions were very optimistic regarding fluxes of nuclear lines, are that experimental efforts are plagued with high backgrounds and low fluxes, and that development of instruments with telescopic properties in the energy range of interest is difficult.
Cosmic Gamma Rays
Author: Floyd William SteckerPublisher:
ISBN:
Category : Gamma rays
Languages : en
Pages : 274
Book Description
Cosmic gamma ray production processes, galactic and extragalactic gamma rays, and cosmology.
Low-energy Gamma Radiation from the Galactic-Center Region
Author: Measurement of the Low Energy Gamma Radiation from the Galactic Center Region
Author: A Hard X-ray and Gamma-ray Observation of the Galactic Center Region
Author: David Miles SmithPublisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 270
Book Description
Cosmic Rays, Supernovae and the Interstellar Medium
Author: M.M. ShapiroPublisher: Springer Science & Business Media
ISBN: 9401131589
Category : Science
Languages : en
Pages : 346
Book Description
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.
The Universe in Gamma Rays
Author: Volker SchönfelderPublisher: Springer Science & Business Media
ISBN: 9783540678748
Category : Science
Languages : en
Pages : 428
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.