Auxiliary information

A low level of extragalactic background light as revealed by gamma-rays from blazars

F.A. Aharonian et al. (H.E.S.S. Collaboration), Nature 440 (2006) 1018-1021astro-ph/0508073


H.E.S.S. data points for 1ES 1101-232  (Figure 2)

Energy interval   Mean energy     Flux            Flux Error
[TeV] [TeV] [/TeV cm^2 s]
0.165 0.208 0.184 5.38e-11 1.88e-11
0.208 0.262 0.232 2.93e-11 0.78e-11
0.262 0.329 0.292 1.67e-11 0.39e-11
0.329 0.414 0.367 9.00e-12 2.08e-12
0.414 0.522 0.462 4.57e-12 1.04e-12
0.522 0.657 0.582 1.41e-12 0.54e-12
0.657 0.827 0.733 1.17e-12 0.37e-12
0.827 1.041 0.922 4.22e-13 2.34e-13
1.041 1.311 1.161 1.59e-13 1.13e-13
1.311 1.650 1.462 1.83e-13 1.02e-13
1.650 2.077 1.840 1.17e-13 0.56e-13
2.077 2.615 2.316 8.49e-14 3.87e-14
2.615 3.292 2.916 4.73e-14 3.03e-14


H.E.S.S. data points for H 2356-309  (Figure SI-2)

Energy interval Mean energy Flux Flux Error
[TeV] [TeV] [/TeV cm^2 s]
0.165 0.208 0.184 4.58e-11 1.34e-11
0.208 0.262 0.232 3.08e-11 0.66e-11
0.262 0.329 0.292 1.37e-11 0.33e-11
0.329 0.414 0.367 5.40e-12 1.57e-12
0.414 0.522 0.462 4.60e-12 0.94e-12
0.522 0.657 0.582 1.54e-12 0.52e-12
0.657 0.827 0.732 5.94e-13 2.96e-13
0.827 1.041 0.921 3.64e-13 1.89e-13
1.041 3.292 1.572 <5.03e-14 !99% upper limit


Remarks: Statistical errors only, 1 sigma. Systematic error on flux and photon index are ~15% and 0.1, respectively. See paper for details