Table 1: Results of HESS observations on PSR B1259-63. For each darkness period the number of telescopes used in the analysis $N_{{\rm tel}}$, the live time $t_{{\rm live}}$, the significance S calculated according to Li & Ma (1983), the number of counts within the on-source ( $N_{{\rm on}}$) and off-source ( $N_{{\rm off}}$) region(s), the background normalisation $\alpha $, and the number of detected $\gamma $-rays ( $N_{{\rm\gamma }}$) are listed. The background normalisation $\alpha $ was determined by the number of off-regions, which do not coincide with other $\gamma $-ray sources in the field of view. Therefore $\alpha $ is not the same for all data subsets because it depends on the distribution of wobble offsets used when obtaining the data.
Period $N_{{\rm tel}}$ $t_{{\rm live}}$ S $N_{{\rm on}}$ $N_{{\rm off}}$ $\alpha $ $N_{{\rm\gamma }}$
2004   [h] [ ${\rm\sigma}$]        
February 3 7.9 9.8 691 2 591 0.172 $246\pm25$
March 4 17.8 7.2 1 740 8 459 0.169 $307\pm43$
April 4 5.1 7.8 644 2 705 0.167 $193\pm25$
May 4 9.9 5.2 910 4 499 0.167 $160\pm31$
June 4 9.1 1.8 722 4 027 0.167 $ 51\pm28$
Total   49.8 13.8 4707 22 281 0.168 $955\pm69$


Source LaTeX | All tables | In the text