The Depletion of Collisionless Dark Matter Spikes
The episode discusses a paper titled "The Depletion of Collisionless Dark Matter Spikes," which investigates how stellar dynamics and interactions within nuclear star clusters deplete dark matter spikes around black holes over cosmological time. The hosts conclude that this depletion limits the detectability window for collisionless spike signals by gravitational wave observatories like LISA, requiring adjustments to observational targets.