  We study operator insertions into 1/2 BPS Wilson loops in N = 6 ABJM theory
and investigate their two-point correlators. In this framework, the energy
emitted by a heavy moving probe can be exactly obtained from some two-point
coefficients of bosonic and fermionic insertions. This allows us to confirm an
early proposal for computing the Bremsstrahlung function in terms of certain
supersymmetric circular Wilson loops, whose value might be accessible to
localization techniques. In the derivation of this result we also elucidate the
structure of protected multiplets in the relevant superconformal defect theory
and perform an explicit two-loop calculation.
