Fig. 16.
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Photon PL index Γ compared to the VHE flux normalisation at 1 TeV. Data from H.E.S.S. Collaboration (2006a), Acciari et al. (2008), Albert et al. (2008), Acciari et al. (2010), Aliu et al. (2012), Aleksić et al. (2012), Beilicke & VERITAS Collaboration (2012), MAGIC Collaboration (2020), EHT MWL Science Working Group (2021). Flux normalisations at different energies have been recalculated at 1 TeV using the respective power-law index. No dependence of the spectral index on the flux was observed.
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