On the growth of supermassive black holes formed from the gravitational collapse of fermionic dark matter cores

• Autores: Argüelles, Carlos Raúl; Boshkayev, K.; Krut, A.; Nurbakhyt, G.; Rueda, J. A.; Ruffini, R.; Uribe-Suárez, J. D.; Yunis, R.
• Año de publicación: 2023
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: GALAXIES; QUASARS; DARK MATTER
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

Observations support the idea that supermassive black holes (SMBHs) power the emission at the centre of active galaxies. However, contrary to stellar-mass BHs, there is a poor understanding of their origin and physical formation channel. In this article, we propose a new process of SMBH formation in the early Universe that is not associated with baryonic matter (massive stars) or primordial cosmology. In this novel approach, SMBH seeds originate from the gravitational collapse of fermionic dense dark matter (DM) cores that arise at the centre of DM haloes as they form. We show that such a DM formation channel can occur before star formation, leading to heavier BH seeds than standard baryonic channels. The SMBH seeds subsequently grow by accretion. We compute the evolution of the mass and angular momentum of the BH using a geodesic general relativistic disc accretion model. We show that these SMBH seeds grow to ∼109– in the first Gyr of the lifetime of the Universe without invoking unrealistic (or fine-tuned) accretion rates.
Fil: Argüelles, Carlos Raúl. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Boshkayev, K.. Al-farabi Kazakh National University; Kazajistán
Fil: Krut, A.. No especifíca;
Fil: Nurbakhyt, G.. Al-farabi Kazakh National University; Kazajistán
Fil: Rueda, J. A.. No especifíca;
Fil: Ruffini, R.. Sapienza Universitá di Roma; Italia
Fil: Uribe-Suárez, J. D.. No especifíca;
Fil: Yunis, R.. No especifíca;