Table 4
Derived averaged spectral parameters for PKS 2155−304 in different epochs discussed in this paper.
| Year | ΓVHE | N 0, VHE | ΓHE | N 0, HE | ΓX | N 0, X |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
|
|
||||||
| 2007 | 3.40 ± 0.09 | 2.48 ± 0.09 | – | – | – | – |
| 2008 | 3.35 ± 0.04 | 4.30 ± 0.07 | 1.75 ± 0.08 | 5.08 ± 0.54 | – | – |
| 2009 | 3.12 ± 0.06 | 5.20 ± 0.18 | 1.88 ± 0.13 | 2.63 ± 0.43 | 3.21 ± 0.16 |
|
Notes. (1) Year of the observation; (2) VHE photon index; (3) normalization of the VHE photon flux at 1 TeV in units of 10-10 TeV-1 s-1 cm-2; (4) HE photon index; (5) normalization of the HE photon flux at 1 GeV in units of 10-14 MeV-1 s-1 cm-2; (6) X-ray photon index; (7) normalization of the X-ray photon flux at 1 keV in units of 10-2 keV-1 s-1 cm-2. The broken power-law model fits to the X-ray data gives photon indices Γ1 = 2.36 ± 0.01, Γ2 = 2.6 ± 0.01, and break energy Ebr = 4.44 ± 0.48 keV Aharonian et al. (2009b).
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