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Astron. Astrophys. 332, 194-198 (1998)

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A search for gamma rays above 0.5 TeV from the southern radio pulsar PSR1706-44

G.P. Rowell 1, S.A. Dazeley 1, P.G. Edwards 2, J.R. Patterson 1 and G.J. Thornton 1

1 Department of Physics and Mathematical Physics, University of Adelaide, Australia, 5005
2 Institute for Space and Astronautical Science, 3-1-1 Yoshinodai Sagamihara, Kanagawa 229, Japan

Received 28 July 1997 / Accepted 20 November 1997

Abstract

A search for TeV [FORMULA] -rays from the isolated pulsar PSR1706-44 using the ground-based atmospheric erenkov imaging technique has been carried out. Analysis of data taken during 1993 and 1994 from the University of Adelaide's 37 pixel erenkov imaging telescope, with special attention paid to the effects of sky-noise differences between ON and OFF source regions, yielded an upper limit to the steady TeV [FORMULA] -ray emission. The 3 [FORMULA] upper limit for energies above 0.5 TeV is 7.0 [FORMULA] photons cm-2 s-1, consistent with the previously reported detection above [FORMULA] 1 TeV for steady emission.

Key words: gamma rays: bursts – pulsars: individual: PSR 1706-44

Present address: Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188, Japan

Send offprint requests to: G.P. Rowell

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© European Southern Observatory (ESO) 1998

Online publication: March 10, 1998
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