Importance of tidal resonances in EMRIs

          @misc{ pirsa_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}}
          }
          

Abstract

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.