Table 3:
Comparison of event statistics from the SNR region from
three years of data. The numbers result from the spectral
analysis of Data set II (cf. Table 1),
shown in
Fig. 3. Given are the number of signal
(ON) and background (OFF) counts, the
normalisation factor ,
the statistical significance of
the gamma-ray excess ()
and the observation time. For
the 2003 data, the special two-telescope analysis with a cut on
the minimum size of camera images at 300 photo-electrons was
applied. The background estimate in this case is derived with
the ON/OFF analysis. For 2004 and 2005, the nominal
spectral analysis with a cut at 80 photo-electrons was used
together with reflected-region background model.
![\begin{table}\small %
\par\begin{tabular*}{\textwidth}[hbtp]{@{\extracolsep{\...
...
2005 & 71276 & 60175 & 1.0 & 30.6 & 36.8\\ \hline
\end{tabular*} \end{table}](/articles/aa/full/2007/10/aa6381-06/img81.gif)
,
the statistical significance of
the gamma-ray excess (
)
and the observation time. For
the 2003 data, the special two-telescope analysis with a cut on
the minimum size of camera images at 300 photo-electrons was
applied. The background estimate in this case is derived with
the ON/OFF analysis. For 2004 and 2005, the nominal
spectral analysis with a cut at 80 photo-electrons was used
together with reflected-region background model.