English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We use the hydrodynamic EAGLE simulation to predict the numbers and masses ofsupermassive black holes in stripped nuclei and compare these to confirmedmeasurements of black holes in observed UCDs. We find that black holes instripped nuclei are consistent with the numbers and masses of those in observedUCDs. Approximately 50 per cent of stripped nuclei with $M > 2 \times 10^6M_\odot$ should contain supermassive black holes. We further calculate a masselevation ratio, $\Psi$ of the population of simulated stripped nuclei of$\Psi_{sim} = 1.51^{+0.06}_{-0.04}$ for $M > 10^7 M_\odot$ stripped nuclei,consistent with that of observed UCDs which have $\Psi_{obs} = 1.7 \pm 0.2$above $M > 10^7 M_\odot$. We also find that the mass elevation ratios ofstripped nuclei with supermassive black holes can explain the observed numberof UCDs with elevated mass-to-light ratios. Finally, we predict the relativenumber of massive black holes in stripped nuclei and galaxy nuclei and findthat stripped nuclei should increase the number of black holes in galaxyclusters by 30-100 per cent, depending on the black hole occupation fraction oflow-mass galaxies. We conclude that the population of supermassive black holesin UCDs represents a large and unaccounted-for portion of supermassive blackholes in galaxy clusters.

Supermassive black holes in UCDs formed from the nuclei of disrupted galaxies