The Intrinsic Supermassive Black Hole Mass-Spin Demographics: A Unified Census from X-ray and Radio AGN Populations
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| Natura: | Recurso digital |
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2025
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| _version_ | 1866901348259201024 |
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| author | Revista, Zen ASTRO, 10 |
| author_facet | Revista, Zen ASTRO, 10 |
| contents | Supermassive black holes (SMBHs) residing at the centers of most massive galaxies are fundamental drivers of galaxy evolution. Their intrinsic properties, mass and spin, dictate their energetic output and gravitational influence. While mass is relatively well-constrained for a large population, the accurate measurement of spin remains a significant challenge, often relying on complex modeling of accretion disk emission or relativistic jet properties. Active Galactic Nuclei (AGN), observable across the electromagnetic spectrum, offer a unique laboratory for probing these properties. X-ray AGN populations provide insights into the inner accretion disk physics, where iron K-alpha lines and continuum fitting can constrain spin. Radio AGN, characterized by powerful relativistic jets, offer alternative spin diagnostics, albeit often indirectly linked to the central engine via jet launching mechanisms. This paper presents a unified census of the intrinsic supermassive black hole mass-spin demographics by synergistically combining observational constraints from both X-ray and radio AGN populations. We analyze a comprehensive dataset drawn from various surveys, employing advanced Bayesian inference techniques and population synthesis models to disentangle observational biases and infer the underlying distributions. Our methodology addresses the selection effects inherent in each observational window, allowing for a more complete and robust picture of SMBH evolution. The results reveal distinct but overlapping distributions in the mass-spin plane for X-ray and radio selected AGN, suggesting different evolutionary pathways or accretion modes dominate their respective populations. The unified census provides crucial constraints for theoretical models of black hole growth, accretion disk physics, and the elusive connection between accretion and relativistic jet formation across cosmic time. |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_18002933 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | The Intrinsic Supermassive Black Hole Mass-Spin Demographics: A Unified Census from X-ray and Radio AGN Populations Revista, Zen ASTRO, 10 Supermassive black holes (SMBHs) residing at the centers of most massive galaxies are fundamental drivers of galaxy evolution. Their intrinsic properties, mass and spin, dictate their energetic output and gravitational influence. While mass is relatively well-constrained for a large population, the accurate measurement of spin remains a significant challenge, often relying on complex modeling of accretion disk emission or relativistic jet properties. Active Galactic Nuclei (AGN), observable across the electromagnetic spectrum, offer a unique laboratory for probing these properties. X-ray AGN populations provide insights into the inner accretion disk physics, where iron K-alpha lines and continuum fitting can constrain spin. Radio AGN, characterized by powerful relativistic jets, offer alternative spin diagnostics, albeit often indirectly linked to the central engine via jet launching mechanisms. This paper presents a unified census of the intrinsic supermassive black hole mass-spin demographics by synergistically combining observational constraints from both X-ray and radio AGN populations. We analyze a comprehensive dataset drawn from various surveys, employing advanced Bayesian inference techniques and population synthesis models to disentangle observational biases and infer the underlying distributions. Our methodology addresses the selection effects inherent in each observational window, allowing for a more complete and robust picture of SMBH evolution. The results reveal distinct but overlapping distributions in the mass-spin plane for X-ray and radio selected AGN, suggesting different evolutionary pathways or accretion modes dominate their respective populations. The unified census provides crucial constraints for theoretical models of black hole growth, accretion disk physics, and the elusive connection between accretion and relativistic jet formation across cosmic time. |
| title | The Intrinsic Supermassive Black Hole Mass-Spin Demographics: A Unified Census from X-ray and Radio AGN Populations |
| url | https://doi.org/10.5281/zenodo.18002933 |