Synthetic catalog of black holes in the Milky Way
A. Olejak, K. Belczynski, T. Bulik, M. Sobolewska

TL;DR
This paper introduces an open-access synthetic catalog of black holes in the Milky Way, detailing their properties, formation, and distribution based on advanced population synthesis models and updated galactic evolution data.
Contribution
It provides the first comprehensive synthetic catalog of Milky Way black holes, including detailed statistical properties and formation scenarios, using updated models and observational data.
Findings
Approximately 120 million single black holes in the Milky Way.
Most massive black holes form from binary mergers in low metallicity environments.
Galactic halo could contain up to 0.006% of its mass hidden in stellar-origin black holes.
Abstract
We present an open-access database which includes a synthetic catalog of black holes in the Milky Way. To calculate evolution of single and binary stars we used updated population synthesis code StarTrack. We applied a new model of star formation history and chemical evolution of Galactic disk, bulge and halo synthesized from observational and theoretical data. We find that at the current moment Milky Way (disk+bulge+halo) contains about 1.2 x 10^8 single black holes with average mass of about 14 Msun and 9.3 x 10^6 BHs in binary systems with average mass of 19 Msun. We present basic statistical properties of BH populations such as distributions of single and binary BH masses, velocities, orbital parameters or numbers of BH binary systems in different evolutionary configurations. We find that the most massive BHs are formed in mergers of binary systems, such as BH-MS, BH+He, BH-BH. The…
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