EMRIs in rotating CDM spikes and Solitonic DM spikes

Gravitational wave (GW) signals from EMRIs are a key
observational target for the next gen detectors. However, the waveforms
may be affected by the astrophysical environment surrounding the central
black hole (BH), and in particular by the surrounding dark matter (DM)
distribution. In this talk, I will consider the formation and effect of DM
'spikes' on emitted GW waveform for a) rotating CDM halo around a central
Kerr BH & b) Scalar field DM distribution. We will show that the
modifications due to the spin of the primary BH improve the detection
prospects of DM spikes with LISA, and must be taken into account for
future parameter estimation studies. On the other hand, effects of
Solitonic DM spikes produces significant different result than CDM
counterpart, and can therefore constitute a probe for such scalar field
dark matter prescriptions.