On the dynamical formation of accreting intermediate mass black holes

Abstract

We compute the probability that intermediate mass black holes (IMBHs) capture companions due to dynamical interactions and become accreting sources, and explore the possibility that the accreting IMBHs would appear as ultra-luminous X-ray sources (ULXs). We focus on IMBHs originating from low-metallicity Population III stars. Two channels of IMBH formation are considered: from primordial halos in the framework of hierarchical clustering, and from non-mixed, zero-metallicity primeval gas in galactic discs. IMBHs can form binary systems due to tidal captures of single stars and exchange interactions with existing binary systems in galactic discs. We find that neither formation mechanism of the accreting IMBH binary is able to provide enough sources to explain the observed population of ULXs. Even at sub-ULX luminosity, the total number of accreting IMBHs with $L>10^{36}$ erg s${}^{-1}$ with dynamically captured companions is found to be $<0.01$ per galaxy.

arXiv comment21 pages, 5 figures. Accepted to MNRAS

References in corpus (28)

• How Massive Single Stars End their Life
• The Assembly and Merging History of Supermassive Black Holes in Hierarchical Models of Galaxy Formation
• Massive Black Holes as Population III Remnants
• Ultraluminous X-Ray Sources in External Galaxies
• The Nature of Accreting Black Holes in Nearby Galaxy Nuclei
• Theoretical Black Hole Mass Distributions
• Consequences of gravitational radiation recoil
• Formation of the First Stars by Accretion
• Early reionization by miniquasars
• The Nature of SS433 and the Ultraluminous X-ray Sources
• Discovery of X-ray QPOs from an Ultra-luminous X-ray Source in M82: Evidence Against Beaming
• Getting a kick out of numerical relativity
• The effect of gravitational-wave recoil on the demography of massive black holes
• Gravitational Recoil of Inspiralling Black-Hole Binaries to Second Post-Newtonian Order
• Dynamical evolution of intermediate mass black holes and their observable signatures in the nearby Universe
• Significant primordial star formation at redshifts z ~ 3-4
• Ultraluminous X-ray Sources as Intermediate Mass Black Holes Fed by Tidally Captured Stars
• The Effect of Gravitational Recoil on Black Holes Forming in a Hierarchical Universe
• Hierarchical Merging, Ultraluminous and Hyperluminous X-ray Sources
• Ultra-Luminous Sources in Nearby Galaxies
• Tidal Capture of Stars by Intermediate-Mass Black Holes
• Close Binary Interactions of Intermediate-Mass Black Holes: Possible Ultra-Luminous X-ray Sources?
• Constraints on Galactic Intermediate Mass Black Holes
• Ultra-Luminous X-ray Sources: Evidence for Very Efficient Formation of Population III Stars Contributing to the Cosmic Near-Infrared Background Excess?
• Young close-by neutron stars: the Gould Belt vs. the Galactic disc
• Massive black hole remnants of the first stars II: optical and X-ray signatures in present-day galactic haloes
• Young Crab-like pulsars and luminous X-ray sources in starbursts and optically dull galaxies
• The Lack of Halo Ultraluminous X-ray Sources

Cited by in corpus (9)

• Effect of Primordial Black Holes on the Cosmic Microwave Background and Cosmological Parameter Estimates
• Massive black hole binaries from runaway collisions: the impact of metallicity
• Growth of structure seeded by primordial black holes
• A census of ultraluminous X-ray sources in the local Universe
• On the association of the ultraluminous X-ray sources in the Antennae galaxies with young stellar clusters
• Intermediate-mass black holes and ultraluminous X-ray sources in the Cartwheel ring galaxy
• Ultra-luminous X-ray Sources as Supercritical Accretion Disks: Spectral Energy Distributions
• A search for hyperluminous X-ray sources in the XMM-Newton source catalog
• The Binary Black Hole Merger Rate from Ultraluminous X-ray Source Progenitors