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We study the particles emitted in the fireball following a Relativistic HeavyIon Collision with the traditional angular analysis employed in cosmology andearth sciences, producing Mollweide plots of the p_t distribution of a fewactual, publically released ALICE-collaboration events and calculating theirangular power spectrum. With the limited statistics at hand, we do not findevidence for acoustic peaks but a decrease of C_l that is reminiscent ofviscous attenuation, but subject to a strong effect from the rapidityacceptance which probably dominates (so we also subtract the m=0 component). Asan exercise, we still extract a characteristic Silk damping length(proportional to the square root of the viscosity over entropy density ratio).The absence of acoustic-like peaks is also compatible with a crossover from theQGP to the hadron gas (because a surface tension at domain boundaries wouldeffect a restoring force that could have driven acoustic oscillations).Presently an unexpected depression appears in the l=6 multipole strength, whichshould be revisited by the ALICE collaboration with full statistics to confirmor discard it.

$p_t$-Angular power spectrum in ALICE events