MOCCA-Survey Database I: Galactic globular clusters harbouring a black hole subsystem
(2018) In Monthly Notices of the Royal Astronomical Society 478(2). p.1844-1854- Abstract
- There have been increasing theoretical speculations and observational indications that certain globular clusters (GCs) could contain a sizeable population of stellar mass black holes (BHs). In this paper, we shortlist at least 29 Galactic GCs that could be hosting a subsystem of BHs (BHS). In a companion paper, we analysed results from a wide array of GC models (simulated with the MOCCA code for cluster simulations) that retained few tens to several hundreds of BHs at 12 Gyr and showed that the properties of the BHS in those GCs correlate with the GC’s observable properties. Building on those results, we use available observational properties of 140 Galactic GCs to identify 29 GCs that could potentially be harbouring up to a few hundreds... (More)
- There have been increasing theoretical speculations and observational indications that certain globular clusters (GCs) could contain a sizeable population of stellar mass black holes (BHs). In this paper, we shortlist at least 29 Galactic GCs that could be hosting a subsystem of BHs (BHS). In a companion paper, we analysed results from a wide array of GC models (simulated with the MOCCA code for cluster simulations) that retained few tens to several hundreds of BHs at 12 Gyr and showed that the properties of the BHS in those GCs correlate with the GC’s observable properties. Building on those results, we use available observational properties of 140 Galactic GCs to identify 29 GCs that could potentially be harbouring up to a few hundreds of BHs. Utilizing observational properties and theoretical scaling relations, we estimate the density, size, and mass of the BHS in these GCs. We also calculate the total number of BHs and the fraction of BHs contained in a binary system for our shortlisted Galactic GCs. Additionally, we mention other Galactic GCs that could also contain a significant number of single BHs or BHs in binary systems. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/204423ce-4b8b-4276-a748-d71d3b393b38
- author
- Askar, Abbas LU ; Sedda, Manuel Arca and Giersz, Mirek
- publishing date
- 2018-05-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Monthly Notices of the Royal Astronomical Society
- volume
- 478
- issue
- 2
- pages
- 11 pages
- publisher
- Oxford University Press
- external identifiers
-
- scopus:85048881754
- ISSN
- 1365-2966
- DOI
- 10.1093/mnras/sty1186
- language
- English
- LU publication?
- no
- id
- 204423ce-4b8b-4276-a748-d71d3b393b38
- date added to LUP
- 2018-10-30 17:55:55
- date last changed
- 2022-04-17 23:49:44
@article{204423ce-4b8b-4276-a748-d71d3b393b38, abstract = {{There have been increasing theoretical speculations and observational indications that certain globular clusters (GCs) could contain a sizeable population of stellar mass black holes (BHs). In this paper, we shortlist at least 29 Galactic GCs that could be hosting a subsystem of BHs (BHS). In a companion paper, we analysed results from a wide array of GC models (simulated with the MOCCA code for cluster simulations) that retained few tens to several hundreds of BHs at 12 Gyr and showed that the properties of the BHS in those GCs correlate with the GC’s observable properties. Building on those results, we use available observational properties of 140 Galactic GCs to identify 29 GCs that could potentially be harbouring up to a few hundreds of BHs. Utilizing observational properties and theoretical scaling relations, we estimate the density, size, and mass of the BHS in these GCs. We also calculate the total number of BHs and the fraction of BHs contained in a binary system for our shortlisted Galactic GCs. Additionally, we mention other Galactic GCs that could also contain a significant number of single BHs or BHs in binary systems.}}, author = {{Askar, Abbas and Sedda, Manuel Arca and Giersz, Mirek}}, issn = {{1365-2966}}, language = {{eng}}, month = {{05}}, number = {{2}}, pages = {{1844--1854}}, publisher = {{Oxford University Press}}, series = {{Monthly Notices of the Royal Astronomical Society}}, title = {{MOCCA-Survey Database I: Galactic globular clusters harbouring a black hole subsystem}}, url = {{http://dx.doi.org/10.1093/mnras/sty1186}}, doi = {{10.1093/mnras/sty1186}}, volume = {{478}}, year = {{2018}}, }