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Detection of 2006 TeV-outburst of PKS 2155-304 with the CANGAROO-III telescope
Speakers
- Ms. Yukiko SAKAMOTO
Primary authors
- Ms. Yukiko SAKAMOTO (Depertment of Physics, Tokai University)
Co-authors
- Prof. Kyoshi NISHIJIMA (Depertment of Physics, Tokai University)
- Mr. Eiichi YAMAZAKI (Depertment of Physics, Tokai University)
- Dr. Junko KUSHIDA (Depertment of Physics, Tokai University)
- Mr. Taku MIZUKAMI (Depertment of Physics, Kyoto University)
- Dr. Ryoji ENOMOTO (Institute for Cosmic Ray Resarch, University of Tokyo)
Files
Abstract content
Observations of PKS 2155-304 with the CANGAROO-III imaging atmospheric Cherenkov telescope were performed for 5 nights from July 28 to August 2 in 2006, just after H.E.S.S. reported that this target object was at a strong active state. Signal exceeding 6 sigma significance level was detected in the effective live time of 15.0 hours using three-fold steroscopic data set. Obtained time averaged integral flux above 630 GeV is (2.3+-0.4)*10^-11cm^-2sec^-1 which corresponds to ~60%Crab flux level. We found nightly variation of gamma-ray flux from PKS 2155-304. Follow up observations were done for 6 nights between August 17 and 25.Effective live time of this period is 17.1 hours and its activity settled down to ~20%Crab.
If this papers is presented for a collaboration, please specify the collaboration
CANGAROO collaboration
Reference
Proceedings of the 30th International Cosmic Ray Conference; Rogelio Caballero, Juan Carlos D'Olivo, Gustavo Medina-Tanco, Lukas Nellen, Federico A. Sánchez, José F. Valdés-Galicia (eds.); Universidad Nacional Autónoma de México, Mexico City, Mexico, 2008; Vol. 3 (OG part 2), pages 905-908
