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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We assess the feasibility of detecting the compact object remnants fromPopulation III (Pop III) stars in nearby dense star clusters, where they becomeluminous again as X-ray binaries (XRBs) and tidal disruption events (TDEs) viastrong tidal encounters. Analytically modelling the formation of Pop III stars,coupled with a top-heavy initial mass function predicted by numericalsimulations, we derive the number of (active) Pop III XRBs and TDEs in thepresent-day Milky Way (MW) nuclear star cluster as $\sim 0.06-0.3$ and$\lesssim 4\times 10^{-6}$, rendering any detection unlikely. The detectionprobability, however, can be significantly boosted when surveying all massivestar clusters from the MW and neighboring galaxy clusters. Specifically, wepredict $\sim 1.5-6.5$ and $\sim 40-2800$ active Pop III XRBs in the MW and theVirgo cluster, respectively. Our Pop III XRBs are dominated ($\sim 99\%$) byblack holes with a typical mass and luminosity of $\sim 45$ $\rm M_{\odot}$ and$\sim 10^{36}$ $\rm erg\ s^{-1}$. Deep surveys of nearby ($\lesssim 30-300$$\rm Mpc$) galaxy clusters for such Pop III XRBs are well within reach ofnext-generation X-ray telescopes, such as ATHENA and LYNX.

Detectability of Population III stellar remnants as X-ray binaries from tidal captures in the local Universe