Table 5: Results of the maximum likelihood fits to our source count distributions with a broken power-law model.
Energy band ${\rm\Gamma_b}$ ${\rm\Gamma_f}$ $S_{\rm b}$ K
(keV)     ( ${\rm 10^{-14}~cgs}$) ( ${\rm deg^{-2}}$)
(1) (2) (3) (4) (5)
0.5-1 $\rm 2.30_{-0.01}^{+0.02}$ $\rm 1.78_{-0.02}^{+0.01}$ $\rm0.81_{-0.01}^{+0.01}$ $\rm 71.3_{-11.6}^{+1.5}$
1-2 $\rm 2.43_{-0.01}^{+0.01}$ $\rm 1.81_{-0.01}^{+0.01}$ $\rm0.65_{-0.01}^{+0.01}$ $\rm 112.3_{-1.0}^{+2.2}$
2-4.5 $\rm 2.62_{-0.02}^{+0.02}$ $\rm 2.24_{-0.03}^{+0.04}$ $\rm 1.46_{-0.07}^{+0.15}$ $\rm 72.6_{-12.1}^{+4.7}$
4.5-10a $\rm 2.69_{-0.03}^{+0.03}$ -- -- $\rm 264.8_{-14.7}^{+15.8}$
0.5-2 $\rm 2.31_{-0.01}^{+0.01}$ $\rm 1.66_{-0.02}^{+0.01}$ $\rm 1.06_{-0.01}^{+0.13}$ $\rm 124.9_{-18.6}^{+1.8}$
0.5-2b $\rm 2.29_{-0.55}^{+0.01}$ $\rm 1.63_{-0.33}^{+0.01}$ $\rm 1.00_{-0.01}^{+0.01}$ $\rm 131.9_{-45.5}^{+1.1}$
2-10 $\rm 2.65_{-0.02}^{+0.02}$ $\rm 2.30_{-0.03}^{+0.05}$ $\rm 3.29_{-0.08}^{+0.15}$ $\rm 84.4_{-6.1}^{+3.3}$
2-10a $\rm 2.54_{-0.01}^{+0.01}$ -- -- $\rm 482.6_{-9.2}^{+10.8}$
2-10b $\rm 2.55_{-0.02}^{+0.03}$ $\rm 1.19_{-0.01}^{+0.01}$ $\rm0.78_{-0.10}^{+0.01}$ $\rm 709.3_{-18.0}^{+110.6}$
(1) Energy band definition (in keV). (2) Power-law slope above the flux break. (3) Power-law slope below the flux break. (4) and (5) Flux break (in units of ${\rm 10^{-14}~erg~cm^{-2}~s^{-1}}$) and normalisation in each band. Errors are 1$\sigma $ uncertainty. a Best fit parameters from using a single power-law. b Best fit parameters from fitting our data together with the data from the CDF-N and CDF-S.


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