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We re-analyse the gravitational-wave event GW190412 with state-of-the-artphenomenological waveform models. This event, which has been associated with ablack hole merger, is interesting due to the significant contribution fromsubdominant harmonics. We use both frequency-domain and time-domain waveformmodels. The PhenomX waveform models constitute the fourth generation offrequency-domain phenomenological waveforms for black hole binary coalescence;they have more recently been complemented by the time-domain PhenomT models,which open up new strategies to model precession and eccentricity, and toperform tests of general relativity with the phenomenological waveformsapproach. Both PhenomX and PhenomT have been constructed with similartechniques and accuracy goals, and due to their computational efficiency this"generation X" model family allows the routine use of subdominant sphericalharmonics in Bayesian inference. We show the good agreement between these andother state-of-the-art waveform models for GW190412, and discuss theimprovements over the previous generation of phenomenological waveform models.We also discuss practical aspects of Bayesian inference such as runconvergence, variations of sampling parameters, and computational cost.

Towards the routine use of subdominant harmonics in gravitational-wave inference: re-analysis of GW190412 with generation X waveform models