  We consider photonic vortical effect, i.e. the difference of the flows of
left- and right-handed photons along the vector of angular velocity in rotating
photonic medium. Two alternative frameworks to evaluate the effect are
considered, both of which have already been tried in the literature. First, the
standard thermal fied theory and, alternatively, Hawking-radiation-type
derivation. In our earlier attempt to compare the two approaches, we found a
crucial factor of two difference. Here we revisit the problem, paying more
attention to details of infrared regularizations. We find out that introduction
of an infinitesimal mass of the vector field brings the two ways of evaluating
the chiral vortical effect into agreement with each other. Some implications,
both on the theoretical and phenomenological sides, are mentioned.
