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Multiband gravitational wave observations of eccentric escaping binary black holes from globular clusters
Yuetong Zhao, Abbas Askar, Youjun Lu +7
Stellar-mass binary black holes (sBBHs) formed in globular clusters (GCs) are promising sources for multiband gravitational wave (GW) observations, particularly with low- and middl…
Ultraluminous X-ray sources in Globular Clusters
Grzegorz Wiktorowicz, Mirek Giersz, Abbas Askar +2
This paper investigates the formation, populations, and evolutionary paths of UltraLuminous X-ray Sources (ULXs) within Globular Clusters (GCs). ULXs, characterised by their extrem…
Exploring compact binary populations with the Einstein Telescope
Neha Singh, Tomasz Bulik, Krzysztof Belczynski +1
The Einstein Telescope (ET), a wide-band, future third generation gravitational wave detector, is expected to have detection rates of binary black hole (BBH) det…
MOCCA SURVEY Database I: Binary Black Hole Mergers from Globular Clusters with Intermediate Mass Black Holes
Jongsuk Hong, Abbas Askar, Mirek Giersz +2
The dynamical formation of black hole binaries in globular clusters that merge due to gravitational waves occurs more frequently in higher stellar density. Meanwhile, the probabili…
Single-single gravitational-wave captures in globular clusters: Eccentric deci-Hertz sources observable by DECIGO and Tian-Qin
Johan Samsing, Daniel J. D'Orazio, Kyle Kremer +2
We study the formation rate of binary black hole mergers formed through gravitational-wave emission between unbound, single black holes in globular clusters. While the formation of…
Binary Black Hole Mergers from Globular Clusters: the Impact of Globular Cluster Properties
Jongsuk Hong, Enrico Vesperini, Abbas Askar +3
The dense environment of globular clusters (GCs) can facilitate the formation of binary black holes (BBHs), some of which can merge with gravitational waves (GW) within the age of…
Black Hole Mergers from Globular Clusters Observable by LISA and LIGO: Results from post-Newtonian Binary-Single Scatterings
Johan Samsing, Daniel J. D'Orazio, Abbas Askar +1
We study the gravitational wave (GW) frequency and chirp mass distribution of binary black hole (BBH) mergers assembled through three-body interactions in globular clusters (GCs),…
MOCCA-SURVEY Database I: Eccentric Black Hole Mergers During Binary-Single Interactions In Globular Clusters
Johan Samsing, Abbas Askar, Mirek Giersz
We estimate the population of eccentric gravitational wave (GW) binary black hole (BBH) mergers forming during binary-single interactions in globular clusters (GCs), using ~ 800 GC…
The origin of the first neutron star -- neutron star merger
K. Belczynski, A. Askar, M. Arca-Sedda +8
The first neutron star-neutron star (NS-NS) merger was discovered on August 17, 2017 through gravitational waves (GW170817) and followed with electromagnetic observations. This mer…
MOCCA-SURVEY Database I: Coalescing Binary Black Holes Originating From Globular Clusters
Abbas Askar, Magdalena Szkudlarek, Dorota Gondek-Rosińska +2
In this first of a series of papers, we utilize results for around two thousand star cluster models simulated using the MOCCA code for star cluster evolution (Survey Database I) to…