GW231123 is claimed to be a 2G+2G hierarchical merger, but only under the NRSur7dq4 waveform; the conclusion flips with IMRPhenomXO4a.
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The Hierarchical Merger Scenario for GW231123
GW231123 is claimed to be a 2G+2G hierarchical merger, but only under the NRSur7dq4 waveform; the conclusion flips with IMRPhenomXO4a.