Stellar-mass Black Holes in Globular Clusters : Dynamical consequences and observational signatures
(2019) In Proceedings of the International Astronomical Union 14(351). p.395-399- Abstract
Sizeable number of stellar-mass black holes (BHs) in globular clusters (GCs) can strongly influence the dynamical evolution and observational properties of their host cluster. Using results from a large set of numerical simulations, we identify the key ingredients needed to sustain a sizeable population of BHs in GCs up to a Hubble time. We find that while BH natal kick prescriptions are essential in determining the initial retention fraction of BHs in GCs, the long-Term survival of BHs is determined by the size, initial central density and half-mass relaxation time of the GC. Simulated GC models that contain many BHs are characterized by relatively low central surface brightness, large half-light and core radii values. We also discuss... (More)
Sizeable number of stellar-mass black holes (BHs) in globular clusters (GCs) can strongly influence the dynamical evolution and observational properties of their host cluster. Using results from a large set of numerical simulations, we identify the key ingredients needed to sustain a sizeable population of BHs in GCs up to a Hubble time. We find that while BH natal kick prescriptions are essential in determining the initial retention fraction of BHs in GCs, the long-Term survival of BHs is determined by the size, initial central density and half-mass relaxation time of the GC. Simulated GC models that contain many BHs are characterized by relatively low central surface brightness, large half-light and core radii values. We also discuss novel ways to compare simulated results with available observational data to identify GCs that are most likely to contain many BHs.
(Less)
- author
- Askar, Abbas LU ; Giersz, Mirek ; Sedda, Manuel Arca ; Askar, Ammar ; Pasquato, Mario and Leveque, Agostino
- organization
- publishing date
- 2019
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- globular clusters: general, stars: black holes, stellar dynamics
- in
- Proceedings of the International Astronomical Union
- volume
- 14
- issue
- 351
- pages
- 5 pages
- publisher
- Cambridge University Press
- external identifiers
-
- scopus:85081986496
- ISSN
- 1743-9213
- DOI
- 10.1017/S1743921319006847
- language
- English
- LU publication?
- yes
- id
- 88322491-2a19-4993-8f7f-fdab59810fb8
- date added to LUP
- 2020-04-15 07:44:47
- date last changed
- 2024-03-04 17:51:29
@article{88322491-2a19-4993-8f7f-fdab59810fb8, abstract = {{<p>Sizeable number of stellar-mass black holes (BHs) in globular clusters (GCs) can strongly influence the dynamical evolution and observational properties of their host cluster. Using results from a large set of numerical simulations, we identify the key ingredients needed to sustain a sizeable population of BHs in GCs up to a Hubble time. We find that while BH natal kick prescriptions are essential in determining the initial retention fraction of BHs in GCs, the long-Term survival of BHs is determined by the size, initial central density and half-mass relaxation time of the GC. Simulated GC models that contain many BHs are characterized by relatively low central surface brightness, large half-light and core radii values. We also discuss novel ways to compare simulated results with available observational data to identify GCs that are most likely to contain many BHs.</p>}}, author = {{Askar, Abbas and Giersz, Mirek and Sedda, Manuel Arca and Askar, Ammar and Pasquato, Mario and Leveque, Agostino}}, issn = {{1743-9213}}, keywords = {{globular clusters: general; stars: black holes; stellar dynamics}}, language = {{eng}}, number = {{351}}, pages = {{395--399}}, publisher = {{Cambridge University Press}}, series = {{Proceedings of the International Astronomical Union}}, title = {{Stellar-mass Black Holes in Globular Clusters : Dynamical consequences and observational signatures}}, url = {{http://dx.doi.org/10.1017/S1743921319006847}}, doi = {{10.1017/S1743921319006847}}, volume = {{14}}, year = {{2019}}, }