A 1PN numerical timing model shows that a pulsar orbiting Sgr A* produces large, distinctive post-fit residuals from an IMBH companion, enabling constraints that fill gaps left by existing S-star and proper-motion bounds.
A Population of Relic Intermediate-Mass Black Holes in the Halo of the Milky Way
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Probing an Intermediate-Mass Black Hole Companion of Sagittarius A* with Pulsar Timing
A 1PN numerical timing model shows that a pulsar orbiting Sgr A* produces large, distinctive post-fit residuals from an IMBH companion, enabling constraints that fill gaps left by existing S-star and proper-motion bounds.