@article{77c51db572fb4c97a50b1e57d1a1f313,
title = "Weighing the IMBH candidate CO-0.40-0.22* in the Galactic Centre",
abstract = "The high velocity gradient observed in the compact cloud CO-0.40-0.22, at a projected distance of 60 pc from the centre of the Milky Way, has led its discoverers to identify the closeby mm continuum emitter, CO-0.40-0.22*, with an intermediate mass black hole (IMBH) candidate. We describe the interaction between CO-0.40-0.22 and the IMBH, by means of a simple analytical model and of hydrodynamical simulations. Through such calculation, we obtain a lower limit to the mass of CO-0.40-0.22* of few 104×M⊙. This result tends to exclude the formation of such massive black hole in the proximity of the Galactic Centre. On the other hand, CO-0.40-0.22* might have been brought to such distances in cosmological time-scales, if it was born in a dark matter halo or globular cluster around the Milky Way.",
keywords = "Black hole physics, Galaxy: centre, ISM: clouds",
author = "A. Ballone and M. Mapelli and M. Pasquato",
note = "Funding Information: We thank the referee, Prof. Miros{\l}aw Giersz, for his stimulating comments. Alessandro Ballone and Michela Mapelli acknowledge financial support from the MERAC (Mobilising European Research in Astrophysics and Cosmology) Foundation, through grant {\textquoteleft}The physics of gas and protoplanetary discs in the Galactic centre{\textquoteright}, and from INAF (Istituto Nazionale di Astrofisica), through PRIN-SKA {\textquoteleft}Opening a new era in pulsars and compact objects science with MeerKat{\textquoteright}. Mario Pasquato acknowledges support from the European Union{\textquoteright}s Horizon 2020 research and innovation programme under the Marie Sk{\l}odowska-Curie grant agreement No. 664931. Alessandro Ballone would like to thank the whole ForDyS group for useful discussions. Most of the simulation post-processing was carried out with the YT toolkit (Turk et al. 2011). Publisher Copyright: {\textcopyright} 2018 The Author(s). Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",
year = "2018",
doi = "10.1093/MNRAS/STY2139",
language = "English (US)",
volume = "480",
pages = "4684--4692",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",
}