The application of the multidimensional analysis to the data of Mk 501 observations

The observations of the active galactic nucleus Markarian 501 were conducted at the Crimean Astrophysical Observatory with the GT-48 ground-based atmospheric Cherenkov detector in May and June 1997. The data were processed using multidimensional analysis. The very high energy γ-ray flux was detected at a highly significant level of 19.1 standard deviation. The integral flux value above 0.9 TeV averaged over the observational period amounted to (5.6±0.3±0.5)x10-11cm-2 s-1. Here the second and the third terms stand for statistical and systematic errors, respectively. This result is in good agreement with the Whipple and the CAT observational data. (author)