  The sensitivity of calorimetric energy-energy correlation function to the
medium-induced energy loss of fast partons in high multiplicity heavy ion
interactions is demonstrated at the appropriate selection of events for the
analysis, namely, the availability of one high-pt jet in an event at least and
using the procedure of ``thermal'' background subtraction. Without jet trigger
this correlation function manifests the global structure of transverse energy
flux: the correlator is isotropic for central collisions, and for non-central
collisions it is sensitive to the azimuthal anisotropy of energy flow
reproducing its Fourier harmonics but with the coefficients squared.
