
Figure 6: Constraints on phasing corrections in the ppE framework, as determined from LISA
observations of
massive–black-hole inspirals at
and
. The figure also
includes the
bounds derived from pulsar PSR J0737–3039 [492], the solar-system bound on
the graviton mass [435], and PN-coefficient bounds derived as described Section 5.2.1. The spike
at
corresponds to the degeneracy between the ppE correction and the initial GW-phase
parameter. (Adapted from [134].)




