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

Stellar-mass black holes are the final remnants of stars born with more than15 solar masses. Billions are expected to reside in the Local Group, yet onlyfew are known, mostly detected through X-rays emitted as they accrete materialfrom a companion star. Here, we report on VFTS 243: a massive X-ray faintbinary in the Large Magellanic Cloud. With an orbital period of 10.4-d, itcomprises an O-type star of 25 solar masses and an unseen companion of at leastnine solar masses. Our spectral analysis excludes a non-degenerate companion ata 5-sigma confidence level. The minimum companion mass implies that it is ablack hole. No other X-ray quiet black hole is unambiguously known outside ourGalaxy. The (near-)circular orbit and kinematics of VFTS 243 imply that thecollapse of the progenitor into a black hole was associated with little or noejected material or black-hole kick. Identifying such unique binariessubstantially impacts the predicted rates of gravitational-wave detections andproperties of core-collapse supernovae across the Cosmos.

An X-ray quiet black hole born with a negligible kick in a massive binary within the Large Magellanic Cloud