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Table 3

Pair halo flux upper limits for 1ES 1101-232, 1ES 0229+200, and PKS 2155-304 at a 99% C.L.

Model-dependent Model-independent

Source name Franceschini EBL Primack EBL
Γ = 1.5 Γ = 2.5 Γ = 1.5 Γ = 2.5 Γ = 1.5 Γ = 2.5


1ES 1101-232 2.3 2.1 2.1 2.0 0.6 0.6
1ES 0229+200 1.2 2.0 0.8 1.4 0.5 0.9
PKS 2155-304low state 1.3 1.1 2.3 2.0 2.9 2.6

Notes. All values are limits on the differential flux at 1 TeV given in units of 10-12 TeV-1 cm-2 s-1.

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