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Recent Results from the CANGAROO Project

Published online by Cambridge University Press:  12 April 2016

S.A. Dazeley ,
P.G. Edwards ,
J.R. Patterson ,
G.P. Rowell ,
M. Sinnott ,
G.J. Thornton ,
C. Wilkinson ,
T. Hara ,
N. Hayashida  and
H. Katsumata
...Show all authors
S.A. Dazeley
Affiliation:
CANGAROO Collaboration, Australia, Department of Physics and Mathematical Physics, University of Adelaide, 5005.
P.G. Edwards
Affiliation:
CANGAROO Collaboration, Australia, Department of Physics and Mathematical Physics, University of Adelaide, 5005.
J.R. Patterson
Affiliation:
CANGAROO Collaboration, Australia, Department of Physics and Mathematical Physics, University of Adelaide, 5005.
G.P. Rowell
Affiliation:
CANGAROO Collaboration, Australia, Department of Physics and Mathematical Physics, University of Adelaide, 5005.
M. Sinnott
Affiliation:
CANGAROO Collaboration, Australia, Department of Physics and Mathematical Physics, University of Adelaide, 5005.
G.J. Thornton
Affiliation:
CANGAROO Collaboration, Australia, Department of Physics and Mathematical Physics, University of Adelaide, 5005.
C. Wilkinson
Affiliation:
CANGAROO Collaboration, Australia, Department of Physics and Mathematical Physics, University of Adelaide, 5005.
T. Hara
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
N. Hayashida
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
H. Katsumata
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
T. Kifune
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
T. Konishi
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
Y. Matsubara
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
T. Matsuoka
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
Y. Mizumoto
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
M. Mori
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
M. Muraishi
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
Y. Muraki
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
T. Oda
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
S. Ogio
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
T. Ohsaki
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
T. Sako
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
K. Sakurazawa
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
R. Susukita
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
A. Suzuki
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
T. Tamura
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
T. Tanimori
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
S. Yanagita
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
T. Yoshida
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.
T. Yoshikoshi
Affiliation:
CANGAROO Collaboration, Japan Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188.

Extract

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The Collaboration of Australia and Nippon for a GAmma Ray Observatory in the Outback operates two large telescopes at Woomera (South Australia), which detect the Čerenkov light images produced in the atmosphere by electronpositron cascades initiated by very high energy (~1 TeV or 1012 eV) gamma rays. These gamma rays arise from a different mechanism than at EGRET energies: inverse Compton (IC) emission from relativistic electrons.

The spoke-like images are recorded by a multi-pixel camera which facilitates the rejection of the large numbers of oblique and ragged cosmic ray images. A field of view ~3.5° is required. The Australian team operates a triple 4 m diameter mirror telescope, BIGRAT, with a 37 photomultiplier tube camera and energy threshold 600 GeV. The Japanese operate a single, highly accurate 3.8 m diameter f/1 telescope and high resolution 256 photomultipler tube camera. In 1998 a new 7 m telescope is planned for Woomera with a design threshold ~;200GeV.

Type
Part 5 High Energy Phenomena
Information
International Astronomical Union Colloquium , Volume 160: Pulsars: Problems and Progress , 1996 , pp. 363 - 364
Copyright
Copyright © Astronomical Society of the Pacific 1996

References

Kifune, T. et al., 1995, ApJ, 438, L91.Google Scholar
Markwardt, C.B. and Ogelman, H., 1995, Nature 375, 40.Google Scholar
Tanimori, T. et al., 1994, ApJ, 429, L61.Google Scholar