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This paper reports the rst discovery of TeV gamma-ray emission from a supernova remnant made with the CANGAROO 3.8 m Telescope. TeV { 2 { gamma rays were detected at the sky position and extension coincident with the northeast (NE) rim of shell-type Supernova remnant (SNR) SN1006 (Type Ia). SN1006 has been a most likely candidate for an extended TeV(More)
– 2 – Observations of the PSR B1259−63/SS2883 binary system using the CANGAROO-II Cherenkov telescope are reported. This nearby binary consists of a 48 msec radio pulsar in a highly eccentric orbit around a Be star, and offers a unique laboratory to investigate the interactions between the outflows of the pul-sar and Be star at various distances. It has(More)
We describe observations carried out by the MOA group of the Galactic Bulge during 2000 that were designed to detect efficiently gravitational microlensing of faint stars in which the magnification is high and/or of short duration. These events are particularly useful for studies of extra-solar planets and faint stars. Approximately 17 deg 2 were monitored(More)
The CANGAROO-III project, which consists of an array of four 10 m imaging Cherenkov telescopes, has just started being constructed in Woomera, South Australia, in a collaboration between Australia and Japan. The first stereoscopic observation of celestial high-energy gamma-rays in the 100 GeV region with two telescopes will start in 2002, and the four(More)
CANGAROO group has constructed the new large imaging Aiř Cerenkov telescope to exploit hundred GeV region gamma-ray astronomy in March 1999 at Woomera, South Australia. It has a 7m parabolic mirror consisting of 60 small plastic spherical mirrors, and a fine imaging camera with 512 PMTs covering the field of view of 3 degree. Observation will start from(More)
We report a rst result on the cosmic ray energy spectrum above 3 10 18 eV measured by the Akeno Giant Air Shower Array (AGASA) from July 1990 to February 1994. The analysis method and the energy resolution of the AGASA experiment are described in some detail. The attening of the spectrum around 10 19 eV (ankle) is observed with a signicance of 2.9. If we(More)
We report the results of TeV gamma-ray observations of the shell type SNR RX J1713.7?3946 (G347.3?0.5). The discovery of strong non-thermal X-ray emission from the northwest part of the remnant strongly suggests the existence of electrons with energies up to 100 TeV in the remnant, making the SNR a good candidate TeV gamma-ray source. We observed RX(More)
Introduction: When fluvial erosion was active during the Noachian, creation and integration of drainage networks competed with disruption by impacts. As a result, drainage networks were composed of valley networks interspersed with crater and intercrater basins which would have overflowed only if contributing basin size and rainfall amounts exceeded(More)