@article{abbce724b12849c99fd815b176364840,
title = "Tidal disruption events on to 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. 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 stars and model the supernova (SN) kick event that led to the production of an inner binary comprised of an SBH. We evolve these triples 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 that produce a TDE in triples is the mean velocity of the natal kick distribution. Smaller σ's lead to larger inner and outer semimajor axes of the systems that undergo a TDE, smaller SBH masses, and longer time-scales. We find that the fraction of systems that produce a TDE is roughly independent of the initial conditions, while estimate a TDE rate of 2.1 × 10−4-4.7 yr−1, depending on the prescriptions for the SBH natal kicks. This rate is almost comparable to the expected TDE rate for massive black holes.",
keywords = "Dynamics, Galaxies: kinematics and dynamics, Galaxy: kinematics, Stars: black holes, Stars: kinematics and dynamics",
author = "Giacomo Fragione and Leigh, {Nathan W.C.} and Rosalba Perna and Bence Kocsis",
note = "Funding Information: We thank the anonymous referee for constructive comments. GF thanks Seppo Mikkola and Fabio Antonini for helpful discussions on the use of the code ARCHAIN. This work received funding from the European Research Council (ERC) under the European Union{\textquoteright}s Horizon 2020 Programme for Research and Innovation ERC-2014-STG under grant agreement no. 638435 (GalNUC) and from the Hungarian National Research,Development, and Innovation Office under grant no. NKFIH KH-125675 (to BK). GF is in part supported by the Foreign Postdoctoral FellowshipProgram of the Israel Academy of Sciences and Humanities. NWCL gratefully acknowledges a Fondecyt Iniciacion grant no. (#11180005). This research was supported in part by the National Science Foundation under grant no. NSF PHY-1748958. RP acknowledges support by NSF award AST-1616157. The Center for Computational Astrophysics at the Flatiron Institute is supported by the Simons Foundation. Simulations were run on the Astric cluster at the Hebrew University of Jerusalem. Funding Information: We thank the anonymous referee for constructive comments. GF thanks Seppo Mikkola and Fabio Antonini for helpful discussions on the use of the code ARCHAIN. This work received funding from the European Research Council (ERC) under the European Union's Horizon 2020 Programme for Research and Innovation ERC-2014STG under grant agreement no. 638435 (GalNUC) and from the Hungarian National Research,Development, and Innovation Office under grant no. NKFIH KH-125675 (to BK). GF is in part supported by the Foreign Postdoctoral FellowshipProgram of the Israel Academy of Sciences and Humanities. NWCL gratefully acknowledges a Fondecyt Iniciacion grant no. (#11180005). This research was supported in part by the National Science Foundation under grant no. NSF PHY-1748958. RP acknowledges support by NSF award AST-1616157. The Center for Computational Astrophysics at the Flatiron Institute is supported by the Simons Foundation. Simulations were run on the Astric cluster at the Hebrew University of Jerusalem. Publisher Copyright: {\textcopyright} 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society",
year = "2019",
month = oct,
day = "11",
doi = "10.1093/mnras/stz2213",
language = "English (US)",
volume = "489",
pages = "727--737",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "1",
}