Jetted Tidal Disruptions of Stars as a Flag of Intermediate Mass Black Holes at High Redshifts

Understand

Tidal disruption events (TDEs) of stars by single or binary supermassive black holes (SMBHs) brighten galactic nuclei and reveal a population of otherwise dormant black holes.

• Adopting event rates from the literature, we aim to establish general trends in the redshift evolution of the TDE number counts and their observable signals.
• We pay particular attention to two types of TDEs which are expected to be observable out to high redshifts, namely (i) jetted TDEs whose luminosity is boosted by relativistic beaming, and (ii) TDEs around binary black holes.
• We show that the brightest (jetted) TDEs are expected to be produced by massive black hole binaries if the occupancy of intermediate mass black holes (IMBHs) in low mass galaxies is high.