  Recent angle-resolved RABBITT experiments have shown that the photoionization
time delay depends on the emission angle of the photoelectron. In this work we
demonstrate that for photoemission from helium accompanied by shake-up
(correlation satellites), the angular variation of the time delay is
dramatically enhanced by the dipolar coupling between the photoelectron and the
highly polarizable bound electron in the IR field. We show that the additivity
rule for the time delays due to the atomic potential, the continuum-continuum
(cc) coupling by the IR field, and due to this two-electron process remains
valid for angle-resolved RABBITT. Our results are expected to be also
applicable to other multi-electron systems that are highly polarizable or
feature a permanent dipole moment.
