Importance of tidal resonances in EMRIs


Gupta, P. (2021). Importance of tidal resonances in EMRIs. Perimeter Institute. https://pirsa.org/21060075


Gupta, Priti. Importance of tidal resonances in EMRIs. Perimeter Institute, Jun. 11, 2021, https://pirsa.org/21060075


          @misc{ pirsa_21060075,
            doi = {10.48660/21060075},
            url = {https://pirsa.org/21060075},
            author = {Gupta, Priti},
            keywords = {Other},
            language = {en},
            title = {Importance of tidal resonances in EMRIs},
            publisher = {Perimeter Institute},
            year = {2021},
            month = {jun},
            note = {PIRSA:21060075 see, \url{https://pirsa.org}}

Priti Gupta Kyoto University


In recent work, tidal resonances induced by the tidal field of nearby stars or black holes have been identified as potentially significant in the context of extreme mass-ratio inspirals (EMRIs). These resonances occur when the three orbital frequencies describing the orbit are commensurate. During the resonance, the orbital parameters of the small body experience a ‘jump’ leading to a shift in the phase of the gravitational waveform. We study how common and important such resonances are over the entire orbital parameter space. We find that a large proportion of inspirals encounter a low-order tidal resonance in the observationally important regime.