Constraints on stupendously large black holes

Carr, Bernard; Kuhnel, Florian und Visinelli, Luca (2021): Constraints on stupendously large black holes. In: Monthly Notices of the Royal Astronomical Society, Bd. 501, Nr. 2: S. 2029-2043

Abstract

We consider the observational constraints on stupendously large black holes (SLABs) in the mass range M greater than or similar to 10(11)M(circle dot). These have attracted little attention hitherto, and we are aware of no published constraints on a SLAB population in the range (10(12)-10(18)) M-circle dot. However, there is already evidence for black holes of up to nearly 10(11) M-circle dot in galactic nuclei, so it is conceivable that SLABs exist and they may even have been seeded by primordial black holes. We focus on limits associated with (i) dynamical and lensing effects, (ii) the generation of background radiation through the accretion of gas during the pre-galactic epoch, and (iii) the gamma-ray emission from the annihilation of the halo of weakly interacting massive particles expected to form around each SLAB if these provide the dark matter. Finally, we comment on the constraints on the mass of ultralight bosons from future measurements of the mass and spin of SLABs.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0035-8711
• Sprache: Englisch