First observations with CELESTE

Smith, D. A.; de Naurois, M.
June 2000
AIP Conference Proceedings;2000, Vol. 515 Issue 1, p416
Academic Journal
The CELESTE solar farm gamma ray telescope detected the Crab Nebula near 80 GeV in early 1998, with 18 heliostats. CELESTE is now in its final configuration with 40 heliostats, with a trigger threshold below 30 GeV (7×10[sup 24] Hz) and a rate above 20 Hz. Overall, the detector is calibrated and aligned. Delays during construction combined with remarkably bad weather resulted in small data sets, and evidence for a Crab signal obtained when 25 heliostats were operational is weak. We describe the detector, present the current state of the data analysis and discuss our observations. © 2000 American Institute of Physics.


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