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Status of the CANGAROO-III Project
Masaki Mori
The CANGAROO-III project, a system of four 10 m telecopes dedicated for gamma-ray astrophysics, has started in 1999 and is expected to complete in 2004 in Woomera, South Australia.…
Complex Spectral Variability from Intensive Multi-wavelength Monitoring of Mrk421 in 1998
T. Takahashi, J. Kataoka, G. Madejski +20
We conducted a multi-frequency campaign for the TeV blazar Mrk~421 in 1998 April. The campaign started from a pronounced high amplitude flare recorded by SAX and Whipple; ASCA obse…
The optical reflector system for the CANGAROO-II imaging atmospheric Cherenkov telescope
A. Kawachi, Y. Hayami, J. Jimbo +14
A new imaging atmospheric Cherenkov telescope (CANGAROO-II) with a light-weight reflector has been constructed. Light, robust, and durable mirror facets of containing CFRP (Carbon…
Rapid Synchrotron Flares from BL Lacertae Detected by ASCA and RXTE
C. Tanihata, T. Takahashi, J. Kataoka +6
We report the variable X-ray emission from BL Lacertae detected in the ASCA ToO observation conducted during the EGRET and RXTE pointings, coincident with the 1997 July outburst. T…
Evidence of thick obscuring matter revealed in the X-ray spectrum of the Z=4.28 quasar RXJ1028.6-0844
W. Yuan, M. Matsuoka, T. Wang +3
We report the discovery of an unambiguous, substantial low-energy cutoff in the broad band X-ray spectrum of the radio quasar RXJ1028.6-0844 at a redshift of 4.276 obtained with th…