Published August 2021 | Version Published + Accepted Version
Journal Article Open

Multiwavelength detectability of isolated black holes in the Milky Way

  • 1. ROR icon Institute for Theoretical Physics
  • 2. ROR icon California Institute of Technology
  • 3. ROR icon Universität Hamburg
  • 4. ROR icon University of Maryland, College Park
  • 5. ROR icon Delta Institute for Theoretical Physics

Abstract

Isolated black holes in our Galaxy have eluded detection so far. We present here a comprehensive study on the detectability of isolated stellar-mass astrophysical black holes that accrete interstellar gas from molecular clouds in both the local region and the Central Molecular Zone. We adopt a state-of-the-art model for the accretion physics backed up by numerical simulations, and study the number of observable sources in both the radio and X-ray band, as a function of a variety of parameters. We discuss in particular the impact of the astrophysical uncertainties on our prediction for the number of bright X-ray sources in the central region of the Galaxy. We finally consider future developments in the radio domain and assess the potential of SKA to detect a population of astrophysical black holes accreting gas in our Galaxy.

Additional Information

© 2021 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model). Accepted 2021 May 20. Received 2021 April 27; in original form 2020 December 21. Published: 27 May 2021. The work of DG and FS has received financial support through the Postdoctoral Junior Leader Fellowship Programme from la Caixa Banking Foundation (grant no. LCF/BQ/LI18/11630014). DG was also supported by the Spanish Agencia Estatal de Investigación through the grants PGC2018-095161-B-I00, IFT Centro de Excelencia Severo Ochoa SEV-2016-0597, and Red Consolider MultiDark FPA2017-90566-REDC. MR acknowledges support by NASA grant no. 80NSSC18K0527. RMTC has been supported by NASA ADAP grant no. 80NSSC177K0515. Data Availability: No new data were generated or analysed in support of this research.

Attached Files

Published - stab1533.pdf

Accepted Version - 2012.10421.pdf

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2012.10421.pdf

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Additional details

Additional titles

Alternative title
Multi-wavelength detectability of isolated black holes in the Milky Way

Identifiers

Eprint ID
110911
Resolver ID
CaltechAUTHORS:20210915-223634303

Related works

Funding

la Caixa Banking Foundation
LCF/BQ/LI18/11630014
Agencia Estatal de Investigación
PGC2018-095161-B-I00
Centro de Excelencia Severo Ochoa
SEV-2016-0597
Ministerio de Economía, Industria y Competitividad (MINECO)
FPA2017-90566-REDC
NASA
80NSSC18K0527
NASA
80NSSC177K0515

Dates

Created
2021-09-16
Created from EPrint's datestamp field
Updated
2021-09-16
Created from EPrint's last_modified field