Search for TeV gamma-rays from SN 1987A in 2001
R. Enomoto, L. T. Ksenofontov, H. Katagiri, K. Tsuchiya, CANGAROO-II collaboration
Abstract
We searched for TeV gamma-rays from the remnant of SN 1987A around 5400 days after the supernova. The observations were carried out in 2001, from November 16 to December 11, using the CANGAROO-II Imaging Atmospheric Cherenkov Telescope. In total, 708 minutes of ON- and 1019 minutes of OFF-source data were obtained under good conditions. The detection threshold was estimated to be 1 TeV, due to the mean zenith angle of 39. The upper limits for the gamma-ray flux were obtained and compared with the previous observations and theoretical models. The observations indicate that the gamma-ray luminosity is lower than 1× 1037 erg s-1 at 10 TeV.
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