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Table 4:

Constraints on the intrinsic column density derived from iso-HR contours in the $\Gamma $ versus $N_{\rm H}$parameter space. No constraint can be derived for 4C+00.02.
Source $N_{\rm H,max}$ F2-10a $\log (L_{2-10})$
  (1021 cm-2)    
PKS0428+20 <6.9 [0.3, 0.6] 43.1
4C+14.41 <1.6 [0.2, 0.5] 43.1
PKS2008-068 <4.8 [0.2, 0.5] 43.8
a Ranges in units of 10-13 erg s-1 cm-2corresponding to the $N_{\rm H}$ range as in this table,
and to the photon index in the range: [0.63,2.62] (more details in text).

Source LaTeX | All tables | In the text

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