scholarly journals Some Aspects of Galactic Cosmic Ray Acceleration

2005 ◽  
Vol 13 ◽  
pp. 24-29
Author(s):  
Yousaf Mahmood Butt
Keyword(s):  
Gamma Ray ◽  
Cosmic Ray ◽  
Medium Energy ◽  
Cosmic Ray Acceleration ◽  
Energy Gamma ◽  
On Line ◽  
Galactic Cosmic Ray

AbstractI give a synopsis of two aspects of the Galactic Cosmic Ray (GCR) acceleration problem: the importance of the medium energy gamma-ray window, and several specific astrophysical sources which merit further investigation. NOTE: figures may be found in the on-line version only: astro-ph/0309758.

scholarly journals Gamma-Ray Bursts at TeV Energies: Observational Status

Galaxies ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 7
Author(s):  
Koji Noda ◽  
Robert Daniel Parsons
Keyword(s):  
Gamma Ray ◽  
Cosmic Ray ◽  
High Energy ◽  
Gamma Ray Bursts ◽  
High Energy Gamma ◽  
Cosmic Ray Acceleration ◽  
Very High Energy ◽  
Energy Gamma ◽  
Observational Status ◽  
Very High

Gamma-ray bursts (GRBs) are some of the most energetic events in the Universe and are potential sites of cosmic ray acceleration up to the highest energies. GRBs have therefore been a target of interest for very high energy gamma-ray observatories for many years, leading to the recent discovery of a number of bursts with photons reaching energies above 100 GeV. We summarize the GRB observational campaigns of the current generation of very high energy gamma-ray observatories as well as describing the observations and properties of the GRBs discovered so far. We compare the properties of the very high energy bursts to the total GRB distribution and make predictions for the next generation of very high energy gamma-ray observations.

scholarly journals Highlights from H.E.S.S.

2019 ◽  
Vol 209 ◽  
pp. 01025
Author(s):  
Mathieu de Naurois
Keyword(s):  
Gamma Ray ◽  
Cosmic Ray ◽  
High Energy ◽  
Physical Processes ◽  
Galactic Source ◽  
Very High Energy ◽  
Energy Gamma ◽  
Galactic Cosmic Ray ◽  
Fundamental Physical ◽  
Very High

In the 15 years since its construction, the H.E.S.S. gamma-ray observatory has allowed the study of the Very High Energy gamma-ray sky at resolutions and sensitivities which were never before possible. During this period H.E.S.S. has discovered a rich zoo of both galactic and extra galactic source classes, made measurements of the galactic cosmic ray spectrum and placed limits on fundamental physical processes. A summary of the latest H.E.S.S. results for these source classes has been presented at the conference, describing the most interesting new observations and their physical interpretation. Additionally the latest upgrades and improvements to the H.E.S.S. hardware and data analyses, and the future science prospects for the experiment have been described.

scholarly journals Probing the Galactic cosmic ray flux with submillimeter and gamma ray data

2008 ◽  
Author(s):  
S. Casanova ◽  
S. Gabici ◽  
F. A. Aharonian ◽  
K. Torii ◽  
Y. Fukui ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Cosmic Ray ◽  
Galactic Cosmic Ray ◽  
Cosmic Ray Flux

scholarly journals Cosmic Rays and the Dynamic Balance in the Large Magellanic Cloud

1990 ◽  
Vol 123 ◽  
pp. 537-541
Author(s):  
Carl E. Fichtel ◽  
Mehmet E. Ozel ◽  
Robert G. Stone
Keyword(s):  
Cosmic Rays ◽  
Gamma Ray ◽  
Dynamic Balance ◽  
Cosmic Ray ◽  
Large Magellanic Cloud ◽  
High Energy ◽  
Magellanic Cloud ◽  
Density Level ◽  
Energy Gamma ◽  
Galactic Dynamic

AbstractPresent and future measurement of the Large Magellanic Cloud (LMC) particularly in the radio and high energy gamma ray range offer the possibility of understanding the density and distribution of the cosmic rays in a galaxy other than our own and the role that they play in galactic dynamic balance. After a study of the consistency of the measurements and interpretation of the synchrotron radiation from our own galaxy, the cosmic ray distribution for the LMC is calculated under the assumption that the cosmic ray nucleon to electron ratio is the same and the relation to the magnetic fields are the same, although the implications of alternatives are discussed. It is seen that the cosmic ray density level appears to be similar to that in our own galaxy, but varying in position in a manner generally consistent with the concept of correlation with the matter on a broad scale.

Development of the Buckland Park Cosmic Ray Air Shower Array for Ultra High Energy Gamma Ray Astronomy

1986 ◽  
Vol 6 (3) ◽  
pp. 335-338 ◽  
Author(s):  
D. Ciampa ◽  
R. W. Clay ◽  
C. L. Corani ◽  
P. G. Edwards ◽  
J. R. Patterson
Keyword(s):  
Gamma Ray ◽  
Cosmic Ray ◽  
High Energy ◽  
Ultra High Energy ◽  
Gamma Ray Astronomy ◽  
Air Shower ◽  
High Energy Gamma ◽  
Energy Gamma ◽  
Shower Array ◽  
Air Shower Array

AbstractThe Buckland Park air shower array is being developed particularly for use as an ultra-high-energy gamma ray astronomy telescope. The properties of this instrument are described with an emphasis on improvements being made to its angular resolution. Some early data are presented to illustrate the way in which the data obtained will be used.

scholarly journals MEGA: the next generation Medium Energy Gamma-ray Telescope

2004 ◽  
Author(s):  
James M. Ryan ◽  
Robert Andritschke ◽  
Peter F. Bloser ◽  
James P. Cravens ◽  
Michael L. Cherry ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Next Generation ◽  
Medium Energy ◽  
Energy Gamma
Sign in / Sign up

Export Citation Format

Share Document