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

The center of the Milky Way hosts the closest supermassive black hole,SgrA$^*$. Decades of near-infrared observations of our Galactic Center haveshown the presence of a small population of stars (the so called S-starcluster) orbiting SgrA$^*$, which were recently reported to be arranged in twoorthogonal disks. In this case, the timescale for Lense-Thirring precession ofS-stars should be longer than their age, implying a low spin for SgrA$^*$. Incontrast, the recent results by the Event Horizon Telescope favor ahighly-spinning SgrA$^*$, which seem to suggest that the S-stars could not bearranged in disks. Alternatively, the spin of SgrA$^*$ must be small,suggesting that the models for its observed image are incomplete.

Implication of spin constraints by the Event Horizon Telescope on stellar orbits in the Galactic Center