Tidal disruption events onto stellar black holes in triples

Abstract

Stars passing too close to a black hole can produce tidal disruption events (TDEs), when the tidal force across the star exceeds the gravitational force that binds it. TDEs have usually been discussed in relation to massive black holes that reside in the centres of galaxies or lurk in star clusters. In this paper, we investigate the possibility that triple stars hosting a stellar black hole (SBH) may be sources of TDEs. We start from a triple system made up of three main sequence (MS) stars and model the supernova (SN) kick event that led to the production of an inner binary comprised of a SBH. We evolve these triples in isolation with a high precision $N$-body code and study their TDEs as a result of Kozai-Lidov oscillations. We explore a variety of distributions of natal kicks imparted during the SN event, various maximum initial separations for the triples, and different distributions of eccentricities. We show that the main parameter that governs the properties of the SBH-MS binaries which produce a TDE in triples is the mean velocity of the natal kick distribution. Smaller $\sigma$'s lead to larger inner and outer semi-major axes of the systems that undergo a TDE, smaller SBH masses, and longer timescales. We find that the fraction of systems that produce a TDE is roughly independent of the initial conditions, while estimate a TDE rate of $7.3\times 10^{-5}-4.1{\mathrm{yr}}^{-1}$, depending on the prescriptions adopted for the SBH natal kicks. This rate is almost comparable to the expected TDE rate for massive black holes.

12 pages, 7 figures, 1 table, accepted by MNRAS. arXiv admin note: text overlap with arXiv:1903.10511

References in corpus (28)

• Binary interaction dominates the evolution of massive stars
• Southern Massive Stars at High Angular Resolution: Observational Campaign and Companion Detection
• The Effect of Pair-Instability Mass Loss on Black Hole Mergers
• Lidov-Kozai Cycles with Gravitational Radiation: Merging Black Holes in Isolated Triple Systems
• Toward Complete Statistics of Massive Binary Stars: Penultimate Results from the Cygnus OB2 Radial Velocity Survey
• Mergers and Obliquities in Stellar Triples
• The ultra-long Gamma-Ray Burst 111209A: the collapse of a blue supergiant?
• Implementing Few-Body Algorithmic Regularization with Post-Newtonian Terms
• On the mass and luminosity functions of tidal disruption flares: rate suppression due to black hole event horizons
• Black hole mergers from quadruples
• A milliparsec supermassive black hole binary candidate in the galaxy SDSS J120136.02+300305.5
• Algorithmic regularization with velocity-dependent forces
• Partial Stellar Disruption by a Supermassive Black Hole: Is the Lightcurve Really Proportional to $t^{-9/4}$?
• Black hole-neutron star mergers from triples
• Atypical Thermonuclear Supernovae from Tidally Crushed White Dwarfs
• The rate of WD-WD head-on collisions may be as high as the SNe Ia rate
• Tidal disruption events from supermassive black hole binaries
• Tidal disruption events: the role of stellar spin
• Stellar Black Hole Binary Mergers in Open Clusters
• A catalog of wide binary and multiple systems of bright stars from Gaia-DR2 and the Virtual Observatory
• Tidal Disruptions of Stars by Black Hole Remnants in Dense Star Clusters
• Black hole and neutron star mergers in Galactic Nuclei: the role of triples
• An analytic model for mass transfer in binaries with arbitrary eccentricity, with applications to triple-star systems
• Tidal Disruptions of Stars by Binary Black Holes: Modifying the Spin Magnitudes and Directions of LIGO Sources in Dense Stellar Environments
• Massive binary star mergers in galactic nuclei: implications for blue stragglers, binary S-stars and gravitational waves
• CG X-1: an eclipsing Wolf-Rayet ULX in the Circinus galaxy
• Probing the Black Hole Merger History in Clusters using Stellar Tidal Disruptions
• The Dynamical Roche Lobe in Hierarchical Triples

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• Effective spin distribution of black hole mergers in triples
• Partial tidal disruption events by stellar mass black holes: gravitational instability of stream and impact from remnant core
• Micro Tidal Disruption Events in Active Galactic Nuclei
• Demographics of triple systems in dense star clusters
• Calibrating the binary black hole population in nuclear star clusters through tidal disruption events
• Electromagnetic transients and gravitational waves from white dwarf disruptions by stellar black holes in triple systems
• Influence of tidal dissipation on outcomes of binary-single encounters between stars and black holes in stellar clusters
• Hydrodynamics of Collisions and Close Encounters between Stellar Black Holes and Main-sequence Stars