Rates of Stellar Tidal Disruption Events around Intermediate-Mass Black Holes

Abstract

Rates of stellar tidal disruption events (TDEs) around supermassive black holes (SMBHs) have been extensively calculated using the loss cone theory, while theoretical work on TDE rates around intermediate-mass black holes (IMBHs) has been lacking. In this work, we aim to accurately calculate the IMBH TDE rates based on their black hole (BH) masses and the stellar profiles of their host galaxies obtained from the latest observations. We find that the TDE rate per galaxy for IMBHs in the center of small galaxies is similar to that of SMBH TDEs, while the TDE rate per cluster from IMBHs in globular clusters is much lower. Very interestingly, we show that the rate of IMBH TDEs generally increases with the BH mass, which is opposite to the trend seen in SMBH TDEs. As a result, the volumetric TDE rate peaks around a BH mass of 10^6 M. The IMBH TDEs from galactic nuclei have an overall volumetric rate comparable to SMBH TDEs at ~10^-7 Mpc^-3 yr^-1, and off-center IMBH TDEs from globular clusters have a volumetric rate that is one or two orders of magnitude lower, assuming that their occupation fraction varies within 10%-100%. Furthermore, we report that IMBH TDEs typically occur in the pinhole regime, which means that deeply plunging events are more likely for IMBH TDEs compared to SMBH TDEs.

18 pages, 13 figures

References in corpus (28)

• Supermassive black hole formation during the assembly of pre-galactic discs
• A Global Three Dimensional Radiation Magneto-hydrodynamic Simulation of Super-Eddington Accretion Disks
• General Relativistic Hydrodynamic Simulation of Accretion Flow from a Stellar Tidal Disruption
• The Superluminous Transient ASASSN-15lh as a Tidal Disruption Event from a Kerr Black Hole
• N-body modeling of globular clusters: Masses, mass-to-light ratios and intermediate-mass black holes
• Improved Dynamical Constraints on the Masses of the Central Black Holes in Nearby Low-mass Early-type Galactic Nuclei And the First Black Hole Determination for NGC 205
• Black hole masses of tidal disruption event host galaxies
• On the mass and luminosity functions of tidal disruption flares: rate suppression due to black hole event horizons
• Measurement of the rate of stellar tidal disruption flares
• Black hole masses of tidal disruption event host galaxies II
• Improved Dynamical Constraints on the Mass of the central Black Hole in NGC 404
• Evidence for an intermediate-mass black hole in the globular cluster NGC 6624
• Origins and Demographics of Wandering Black Holes
• Dynamical Constraints on The Masses of the Nuclear Star Cluster and Black Hole in the Late-Type Spiral Galaxy NGC 3621
• A 10,000-solar-mass black hole in the nucleus of a bulgeless dwarf galaxy
• A new Fokker-Planck approach for relaxation-driven evolution of galactic nuclei
• Revealing the intermediate-mass black hole at the heart of the dwarf galaxy NGC 404 with sub-parsec resolution ALMA observations
• The Limitations of Optical Spectroscopic Diagnostics in Identifying AGNs in the Low Mass Regime
• The Young Supernova Experiment Data Release 1 (YSE DR1): Light Curves and Photometric Classification of 1975 Supernovae
• Detection of a $\sim$100,000 M${}_{\odot }$ black hole in M31's most massive globular cluster: A tidally stripped nucleus
• The Physics of Accretion Discs, Winds And Jets in Tidal Disruption Events
• Unveiling the Population of Wandering Black Holes via Electromagnetic Signatures
• Extreme mass ratio inspirals and tidal disruption events in nuclear clusters. I. Time dependent rates
• Formation of globular clusters in dwarf galaxies of the Local Group
• H$\alpha$ Reverberation Mapping of the Intermediate-Mass Active Galactic Nucleus in NGC 4395
• Revisiting the Rates and Demographics of Tidal Disruption Events: Effects of the Disk Formation Efficiency
• Demographics of Tidal Disruption Events with L-Galaxies: I. Volumetric TDE rates and the abundance of Nuclear Star Clusters
• Constraining the Low-Mass End of the Black Hole Mass Function and the Active Fraction of the Intermediate-mass Black Holes

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• Wind-mediated Eddington-limited emission in a $10^4{M}_{\odot }$ Black Hole Tidal Disruption Event
• Updated predictions for gravitational wave emission from TDEs for next generation observatories
• Radio Variability in Recently-Quenched Galaxies: The Impact of TDE or AGN Driven Outflows
• Asymmetrical thermonuclear supernovae triggered by the tidal disruption of white dwarfs
• Merger Driven or Internal Evolution? A New Morphological Study of Tidal Disruption Event Host Galaxies
• Rate of Repeating Tidal Disruption Events with 5--19 years interval
• Prospects for Measuring Black Hole Masses using TDEs with the Vera C. Rubin Observatory