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Mergers of stellar-mass black holes were recently observed in the gravitational wave window opened by LIGO. This puts the spotlight on dense stellar systems and their ability to create intermediate-mass black holes (IMBHs) through repeated…

Astrophysics of Galaxies · Physics 2016-06-29 Mario Pasquato

Machine learning is a powerful technique, becoming increasingly popular in astrophysics. In this paper, we apply machine learning to more than a thousand globular cluster (GC) models simulated as part of the 'MOCCA-Survey Database I'…

Astrophysics of Galaxies · Physics 2019-03-13 Ammar Askar , Abbas Askar , Mario Pasquato , Mirek Giersz

Extragalactic globular clusters (GCs) are important tracers of galaxy formation and evolution. Obtaining GC catalogues from photometric data involves several steps which will likely become too time-consuming to perform on the large data…

Astrophysics of Galaxies · Physics 2022-07-20 Dominik Dold , Katja Fahrion

Decades after the first predictions of intermediate-mass black holes (IMBHs) in globular clusters (GCs) there is still no unambiguous observational evidence for their existence. The most promising signatures for IMBHs are found in the cores…

Astrophysics of Galaxies · Physics 2015-06-05 Stefan Umbreit , Frederic A. Rasio

Intermediate-mass black holes (IMBHs) have masses of about 100 to 100,000 solar masses. They remain elusive. Observing IMBHs in present-day globular clusters (GCs) would validate a formation channel for seed black holes in the early…

The rapid evolution of machine learning (ML) has led to the widespread adoption of complex "black box" models, such as deep neural networks and ensemble methods. These models exhibit exceptional predictive performance, making them…

Machine Learning · Computer Science 2025-03-28 Moncef Garouani , Josiane Mothe , Ayah Barhrhouj , Julien Aligon

The detection of intermediate mass black holes (IMBHs) in Galactic globular clusters (GCs) has so far been controversial. In order to characterize the effectiveness of integrated-light spectroscopy through integral field units, we analyze…

Astrophysics of Galaxies · Physics 2017-04-19 Ruggero de Vita , Michele Trenti , Paolo Bianchini , Abbas Askar , Mirek Giersz , Glenn van de Ven

The detection of intermediate mass black holes (IMBHs) in globular clusters has been hotly debated, with different observational methods delivering different outcomes for the same object. In order to understand these discrepancies, we…

Astrophysics of Galaxies · Physics 2017-08-23 Paolo Bianchini , Mark Norris , Glenn van de Ven , Eva Schinnerer

Intermediate-mass black holes (IMBHs) are those between 100 and 10$^5$ solar masses ($M_{\odot}$); their formation process is debated. One possible origin is the growth of less massive black holes (BHs) via mergers with stars and compact…

Astrophysics of Galaxies · Physics 2024-06-12 Michiko S. Fujii , Long Wang , Ataru Tanikawa , Yutaka Hirai , Takayuki R. Saitoh

The study of intermediate-mass black holes (IMBHs) is a young and promising field of research. Formed by runaway collisions of massive stars in young and dense stellar clusters, intermediate-mass black holes could still be present in the…

Globular clusters have been alternatively predicted to host intermediate-mass black holes (IMBHs) or nearly impossible to form and retain them in their centres. Over the last decade enough theoretical and observational evidence have…

Astrophysics of Galaxies · Physics 2014-11-20 M. Safonova , C. S. Stalin

Machine learning (ML) has seen significant growth in both popularity and importance. The high prediction accuracy of ML models is often achieved through complex black-box architectures that are difficult to interpret. This interpretability…

Machine Learning · Statistics 2024-07-29 David Köhler , David Rügamer , Matthias Schmid

Whether intermediate-mass black holes reside in nearby star clusters has remained contested for decades. We address this question by training neural network and random forest regressors on synthetic catalogs generated with the {\sc Rapster}…

Astrophysics of Galaxies · Physics 2026-05-22 Konstantinos Kritos , Digvijay Wadekar , Emanuele Berti

The presence or absence of intermediate-mass black holes (IMBHs) at the centre of Milky Way globular clusters (GCs) is still an open question. This is either due to observational restrictions or limitations in the dynamical modelling…

Globular clusters have been alternatively predicted to host intermediate-mass black holes (IMBHs) or nearly impossible to form and retain them in their centres. Over the last decade enough theoretical and observational evidence have…

Astrophysics · Physics 2015-06-24 Margarita Safonova , C. S. Stalin

Using the Next Generation Very Large Array (ngVLA), we will make a comprehensive inventory of intermediate-mass black holes (IMBHs) in hundreds of globular cluster systems out to a distance of 25 Mpc. IMBHs have masses of about 100 to…

Astrophysics of Galaxies · Physics 2018-06-18 J. M. Wrobel , J. C. A. Miller-Jones , K. E. Nyland , T. J. Maccarone

We present a deep machine learning (ML) approach to constraining cosmological parameters with multi-wavelength observations of galaxy clusters. The ML approach has two components: an encoder that builds a compressed representation of each…

Instrumentation and Methods for Astrophysics · Physics 2022-02-16 Michelle Ntampaka , Alexey Vikhlinin

The direct observation of intermediate-mass black holes (IMBH) populations would not only strengthen the possible evolutionary link between stellar and supermassive black holes, but unveil the details of the pair-instability mechanism and…

Instrumentation and Methods for Astrophysics · Physics 2025-12-16 Melissa Lopez , Giada Caneva , Ana Martins , Stefano Schmidt , Jonno Schoppink , Wouter van Straalen , Collin Capano , Sarah Caudill

Finding an intermediate-mass black hole (IMBH) in a globular cluster (GC), or proving its absence, is a crucial ingredient in our understanding of galaxy formation and evolution. The challenge is to identify a unique signature of an IMBH…

Astrophysics of Galaxies · Physics 2017-08-23 Alice Zocchi , Mark Gieles , Vincent Hénault-Brunet

Ground motion models (GMMs) are critical for seismic risk mitigation and infrastructure design. Machine learning (ML) is increasingly applied to GMM development due to expanding strong motion databases. However, existing ML-based GMMs…

Machine Learning · Computer Science 2025-12-23 Vemula Sreenath , Filippo Gatti , Pierre Jehel
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