Author: A. LambertPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Gamma-ray Emission Above 10sup(15)eV from Cygnus X-3 and Other Galactic Sources
Author: A. LambertGamma-ray Emission Above 10sup(15)eV from Cygnus X-3 and Other Galactic Sources
Author: A. LambertGamma-ray Emission Above 10 [to the Power 15]eV from Cygnus X-3 and Other Galactic Sources
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Author: Alyn LambertA Search for Very High Energy Gamma Ray Emission from Cygnus X-3
Author: Andrew Harold SzentgyorgyiPublisher:
ISBN:
Category :
Languages : en
Pages : 456
Book Description
A Search for Very High Energy Gamma Rays from Cygnus X-3
Author: John R. JenningsPublisher:
ISBN:
Category : Cygnus X-3
Languages : en
Pages : 508
Book Description
X- and Gamma-Ray Astronomy
Author: H. BradtPublisher: Springer Science & Business Media
ISBN: 9401025851
Category : Science
Languages : en
Pages : 323
Book Description
The IAU Symposium No. 55 on 'X-Ray and Gamma-Ray Astronomy' has occurred, not entirely by coincidence, at an important moment in the development of these new branches of observational astronomy. In X-ray astronomy the data from the first X-ray observatory UHURU have contributed to a new view of the X-ray sky and a new conception of the nature and properties of galactic and extragalactic X-ray sources. In gamma-ray astronomy the exciting and often controversial nature of the results underlines the importance of the forthcoming launch of SAS-B, the first orbiting y-ray observatory. As Bruno Rossi reminds us (p. I), the Symposium occurred almost exactly ten years after the first detection of the X-ray star Sco X-I. During this time we have moved from the detection of a handful of the nearest and brightest sources to the detailed study of the nature of stellar sources in the farthest reaches of our own galaxy and in external galaxies of the local group. The detection of pulsating X-ray sources in bi nary systems permits the measurement of pulsation periods, and orbital parameters with precisions comparable to any yet achieved with traditional observational techniques. The strong indications that most X-ray sources are extremely compact objects give us confidence that X-ray astronomy will playa significant and possibly decisive role in the study of stars near the end point of stellar evolution.
Science With The New Generation Of High Energy Gamma-ray Experiments: The Variable Gamma-ray Sources: Their Identifications And Counterparts - Proceedings Of The Fourth Workshop
Author: Marco Maria MassaiPublisher: World Scientific
ISBN: 9814474495
Category : Science
Languages : en
Pages : 251
Book Description
The research program in gamma-ray astronomy focuses on increasing our knowledge of the nature and origin of galactic and extragalactic gamma rays, and understanding high-energy processes in the Sun, celestial objects, interstellar medium, and extragalactic space.This book not only provides an overview of the latest research and future plans for space-borne and ground-based experiments dedicated to the observation of the gamma-ray sky, but also addresses the topic of variable gamma-ray sources from the perspective of their identification and counterparts at different wavelengths. It further gives an overview of the theory related to the most qualified emission processes that take place in these sources and of the nature of their variability.
Part I
Author: Christopher Paul GodfreyPublisher:
ISBN:
Category :
Languages : en
Pages : 186
Book Description
Very High Energy Gamma Ray Astronomy
Author: K.E. TurverPublisher: Springer Science & Business Media
ISBN: 9400938314
Category : Science
Languages : en
Pages : 303
Book Description
An Advanced Research Workshop on Very High Energy Gamma Ray Astronomy and Related Topics was held at Durham, England during August 11-15 1986. The meeting was sponsored by the Scientific Affairs Division of NATO and the University of Durham. It is four years since the first Workshop dedicated to High Energy Gamma Ray Astronomy was held at Ootacamund, India. At that meeting the developments in Very High Energy Gamma Ray Astronomy over a period of more than 20 years were reported and the methodology, limitations, improvements and prospects for further progess were discussed. The possible requirement for a follow-up meeting was clear if the optimistic future foreseen for the field at the Ooty meeting was correct. The Durham meeting was suggested to fill this role. Although the arrangements for the Durham meeting were discussed as long ago as 1983 with possible dates in 1984 or 1986, the eventual date in 1986 has proved admirable and has coincided with a time when further advances have been reported. An important feature of the proposal for the Durham meeting was the emphasis on a series of Workshop sessions, the conclusions of each to be summarized by a Rapporteur. The purpose of these sessions was to provide a consensus view of many of the important areas in the field at a time of increasing interest by the rest of the astrophysics community.
Gamma Ray Astronomy from 1011 to 1014 EV Using the Atmospheric Cerenkov Technique
Author: N. A. PorterPublisher:
ISBN:
Category : Cherenkov radiation
Languages : en
Pages : 110
Book Description
The atmospheric Cerenkov technique has been widely used over the past two decades to search for point sources of 1011 to 1014 eV gamma rays. In this technique the gamma rays are detected by the Cerenkov light emission from the small air showers that they create in the atmosphere. The basic principles underlying the technique are reviewed with particular reference to the experiments performed to date, (September 1977). The production and absorption processes that pertain to this energy region are discussed. There is strong evidence for the detection of 10^12 eV gamma rays from NP0532, Centaurus A and Cygnus X-3. Models for these, and other sources for which upper limits have been derived, are outlined. There appears to be no other technique that can compete with the atmospheric Cerenkov technique in this energy range. The methods by which the present flux sensitivity can be reduced by factors of 10 - 100 are discussed; it is also possible to extend observations into the previously unexplored 10 - 100 Gev energy range.