Description
In-person and virtual particpants will be shown pre-recorded flash talks from virtual particpants
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Maryna Ishchenko20/08/2024, 17:25Numerical approaches to modelling stellar systems and their constituentsPoster
Our recent investigation (Ishchenko et al. 2023) was found the 10 Milky Way globular clusters which can potentially to interact with the nuclear star cluster during their lifetime. For the dynamical orbital integration of GCs, including the effects of stellar evolution, we employed a high-order parallel N-body code φ−GPU, which is based on the fourth-order Hermite integration scheme with...
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Ethan White (Indiana University Bloomington)20/08/2024, 17:28Numerical approaches to modelling stellar systems and their constituentsPoster
We present the results of a set of N-body simulations aimed at investigating the long-term kinematic and spatial evolution of rotating multiple-stellar populations in globular clusters.
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Our simulations start with a compact, rapidly rotating, and flattened second-generation (SG) subsystem embedded in the central regions of a more diffuse, and slow rotating first-generation (FG) cluster.
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Silvia Leanza (University of Bologna)20/08/2024, 17:31Observational properties of dense stellar systems in different environmentsTalk
Globular clusters (GCs) are among the longest-studied stellar systems. Despite extensive study, their formation mechanisms, evolutionary history, and interplay with the host galaxy are still unknown. A key to solving these questions lies in the analysis of their internal kinematics, which can provide invaluable insights into their dynamical evolution. However, the study of GC kinematics...
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Michiko Fujii (The University of Tokyo)20/08/2024, 17:34Talk
The formation process of star clusters has not been fully understood yet. Recent numerical simulations of star-cluster formation are reaching the mass of globular clusters (1e6 Msun). However, in hydrodynamics simulation with N-body, the stars have been treated as super particles, representing several stars as one particle. We have developed a new N-body/smoothed-particle hydrodynamics (SPH)...
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Fulya Kiroglu (Northwestern University)20/08/2024, 17:37Talk
Despite the rising number of binary black hole (BH) mergers detected as gravitational wave (GW) sources by LIGO/Virgo, the evolutionary origin of these events remains a mystery. A growing body of evidence suggests that many of these events originated in dense stellar environments like globular clusters (GCs). Dense environments can produce qualitatively different properties of binary BH...
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Bhupendra Mishra (CAMK)20/08/2024, 17:40Chris Belczynski memorial session on compact objects and gravitational wave sourceTalk
The LIGO/Virgo detections showed unexpected progenitor black hole masses (~66 solar mass). Such black holes with their mass falling in the pair instability mass-gap region seek a new formation channel. We focus on the so-called AGN channel to understand such a puzzling progenitor mass. In this study, we numerically model 3D global MHD accretion flows of embedded black holes within a turbulent...
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Lucas Hellström20/08/2024, 17:43Poster
White Dwarf Binaries are abundant in Globular Clusters and are believed to contribute to the Gravitational Wave background. This background radiation should be visible by future space-based detectors such as LISA. We have taken a large number of WD binaries from GC simulations done in MOCCA and calculated their GW signal. This talk will present our thoughts behind this process and the results...
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Antti Rantala (Max Planck Institute for Astrophysics)20/08/2024, 17:46Chris Belczynski memorial session on compact objects and gravitational wave sourceTalk
Observations and high-resolution hydrodynamical simulations indicate that massive star clusters assemble hierarchically from sub-clusters with a universal power-law cluster mass function. We study the consequences of such assembly for the formation of intermediate-mass black holes (IMBHs) at low metallicities ($Z=0.01\;Z_\mathrm{\odot}$) with our updated N-body code BIFROST based on the...
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M. Paola Vaccaro (ITA-ZAH, Heidelberg University)20/08/2024, 17:49Poster
Gravitational wave detections of black holes (BHs) in the pair-instability mass gap have sparked interest in dynamical formation channels. In my work, I have explored the process of hierarchical BH mergers in active galactic nuclei (AGNs), which stand out with respect to other dynamical environments for three main reasons: enhanced binary formation due to migration traps, accelerated binary...
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