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astro-ph.GA2025
The star grinder in the Galactic centre. Uncovering the highly compact central stellar-mass black hole cluster
Jaroslav Haas, Pavel Kroupa, Ladislav Å ubr +1
Various past theoretical considerations and observational efforts suggest the presence of a population of stellar-mass black holes in the innermost parsec of the Galactic centre. I…
astro-ph.GA2024
Candidate Young Stellar Objects in the S-cluster: The Kinematic Analysis of a Sub-population of the Low-mass G-objects close to Sgr A*
Florian PeiÃker, Michal ZajaÄek, Maria Melamed +5
The observation of several L-band emission sources in the S cluster has led to a rich discussion of their nature. However, a definitive answer to the classification of the dusty ob…
astro-ph.GA2024
Dynamical coupling of Keplerian orbits in a hierarchical four-body system: from the Galactic Centre to compact planetary systems
Myank Singhal, Ladislav Å ubr, Jaroslav Haas
This study focuses on the long-term evolution of two bodies in nearby initially coplanar orbits around a central dominant body perturbed by a fourth body on a distant Keplerian orb…