  In this paper we evaluate the modified celestial amplitude for gravitons and
gluons, as defined in arXiv:1801.10171[hep-th]. We find that the modified
(tree) amplitude is finite for gravitons in Einstein gravity. The modified
amplitude behaves like correlation function of operators inserted at various
points of null-infinity in the Minkowski space-time. Therefore, unlike the
standard celestial amplitudes, these are three dimensional objects. We also
show that this amplitude admits conformal soft factorization recently studied
in the literature.
