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Title:
Upper limits on TeV gamma-ray emission from Centaurus A, Vela X-1, Centaurus X-3, and Circinus X-1
Authors:
Allen, W. H.; Bond, I. A.; Budding, E.; Conway, M. J.; Daniel, A.; Fenton, K. B.; Fujii, H.; Fujii, Z.; Hayashida, N.; Hibino, K.; Honda, M.; Humble, J. E.; Kabe, S.; Kasahara, K.; Kifune, T.; Lythe, G. D.; Masaike, A.; Matsubara, Y.; Mitsui, K.; Miura, Y.; Mori, M.; Muraki, Y.; Nagano, M.; Nakamura, T.; Nishizawa, M.; Norris, P. M.; Ogio, S.; Saito, To.; Sakata, M.; Sato, H.; Shimizu, H. M.; Spencer, M.; Storey, J. R.; Tanimori, T.; Teshima, M.; Torii, S.; Wadsworth, A.; Watase, Y.; Woodhams, M. D.; Yamamoto, Y.; Yock, P. C. M.; Yuda, T.; The JANZOS Collaboration
Affiliation:
AA(Carter National Observatory of New Zealand, Wellington), AB(Inst. of Physical and Chemical Research, Wako, Japan), AC(Carter National Observatory of New Zealand, Wellington), AD(Auckland Univ., New Zealand), AE(Auckland Univ., New Zealand), AF(Tasmania Univ., Hobart, Australia), AG(National Lab. for High-Energy Physics, Tsukuba, Japan), AH(Nagoya Univ., Japan), AI(Tokyo Univ., Japan), AJ(Tokyo Univ., Japan)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 405, no. 2, p. 554-558. (ApJ Homepage)
Publication Date:
03/1993
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ACTIVE GALAXIES, GAMMA RAY ASTRONOMY, RADIANT FLUX DENSITY, X RAY BINARIES, LUMINOSITY, X RAY SOURCES
DOI:
10.1086/172386
Bibliographic Code:
1993ApJ...405..554A

Abstract

The active galaxy Centaurus A and the X-ray binary systems Vela X-1, Centaurus X-3, and Circinus X-1 were monitored for VHE gamma-ray emission above 1 TeV with the JANZOS Cerenkov facility during 1988 and 1989. No evidence was found for persistent or episodic emission from any of these objects. Subsequent upper limits on the integral fluxes of 2.2 x 10 exp -11, 2.8 x 10 exp -11, 4.0 x 10 exp -11, and 4.2 x 10 exp -11/sq cm/s, respectively, were obtained for these objects. These limits are consistent with results of observations made by other groups.

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