Results 301 to 310 of about 220,311 (341)

TeV gamma-ray sources

AIP Conference Proceedings, 2001
Several TeV sources γ-rays have been detected in the past decade, and others have been proposed. They can be divided into three main categories: galactic, extra-galactic, and exotic. Here I review the two former categories, which contain the sources which have been observed, with discussions of the source characteristics and the physical mechanisms by ...
openaire   +4 more sources

A New Source of Gamma Rays

Science, 2000
Relativistic outflows or "jets" are collimated streams of high-energy electrons that emit synchrotron radiation at radio wavelengths and have bulk velocities that are a substantial fraction of the speed of light. They trace the outflow of enormous amounts of energy and matter from a central supermassive black hole in distant radio galaxies.
openaire   +2 more sources

Galactic Gamma-Ray Sources

Annual Review of Astronomy and Astrophysics, 1983
In Volume 5 of the Annual Review of Astronomy and Astrophysics (1967) Giovanni Fazio (76a) wrote that "... up until now, no photons of energy greater than 100 keV originating from beyond the solar system have definitely been detected." Fourteen years later, gamma-ray astronomy is an accepted branch of observational astrophysics, with something like 105
G. F. Bignami, W. Hermsen
openaire   +2 more sources

Directional Detector of Gamma Ray Sources

Health Physics, 1996
This work describes the design, development, and characterization of an ionization chamber to detect and locate gamma ray sources with intensities down to 100 mu Gy h(-1). The results show that sources of x ray and gamma radiation in the energy range of 14 to 1,250 keV can be located.
S Kronenberg   +3 more
openaire   +3 more sources

Point-like gamma-ray sources

Space Science Reviews, 1983
Various models are examined, which could give rise to point-like gamma-ray sources, at the present time indistinguishable, experimentally, from true point sources. These models involve energetic processes associated with interstellar clouds, e.g. supernova-cloud interactions, neutron star accretion inside interstellar clouds, cloud collisions, etc. The
G. Tenorio-Tagle, Gregor E. Morfill
openaire   +2 more sources

Transient gamma-ray sources

Proceedings of the Indian Academy of Sciences - Section A, 1971
Gamma-ray production by particles escaping from a pulsar into the surrounding nebula is considered. The gamma-ray emission decreases with time and such pulsar-nebula complexes will be observed as transient sources.
T. N. Rengarajan, Krishna M. V. Apparao
openaire   +2 more sources

Cosmic Gamma-Ray Sources

2004
From the contents:Preface.- 1. Introduction.- 2. Fundamentals of gamma-ray astrophysics.- 3. Galactic gamma-ray sources.- 4. Extragalactic gamma-ray sources.- 5. Non-thermal emission from early-type binaries.- 6. Gamma-ray emission from supernova remnants.- 7. Gamma-ray pulsars.- 8. Theories of gamma-ray emission from pulsars.- 9.
Kwong-Sang Cheng, Gustavo E. Romero
openaire   +2 more sources

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