Recent results on direct-photon measurements in Pb--Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV from central to peripheral collisions, as well as in 0--10\% central and 20--40\% semicentral Pb--Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV with improved significance are presented.
A significant direct-photon signal is measured for $p_{\rm T}$ $\gtrapprox$ 2 GeV/$c$ from central to peripheral Pb--Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV which is in agreement with model calculations containing pre-equilibrium photons in the intermediate $p_{\rm T}$ range and prompt photons at high $p_{\rm T}$. No significant direct-photon signal is measured in the low $p_{\rm T}$ interval which is also in agreement with the small thermal-photon signal predicted by state-of-the art models.
On the other hand, a direct-photon signal is measured for $p_{\rm T}$ $>$ 1 GeV/$c$ with a significance of 3.1 (1.0 $<$ $p_{\rm T}$ $<$ 1.8 GeV/$c$) and 3.4 (1.0 $<$ $p_{\rm T}$ $<$ 2.3 GeV/$c$) in 0--10\% and 20--40\% central Pb--Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV, respectively.
Direct photons at both energies are in agreement with state-of-the-art theory calculations over the complete $p_{\rm T}$ range and measured centralities.