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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Theoretical models for the production of relativistic jets from activegalactic nuclei predict that jet power arises from the spin and mass of thecentral black hole, as well as the magnetic field near the event horizon. Thephysical mechanism mechanism underlying the contribution from the magneticfield is the torque exerted on the rotating black hole by the field amplifiedby the accreting material. If the squared magnetic field is proportional to theaccretion rate, then there will be a correlation between jet power andaccretion luminosity. There is evidence for such a correlation, but inadequateknowledge of the accretion luminosity of the limited and inhomogeneous usedsamples prevented a firm conclusion. Here we report an analysis of archivalobservations of a sample of blazars (quasars whose jets point towards Earth)that overcomes previous limitations. We find a clear correlation between jetpower as measured through the gamma-ray luminosity, and accretion luminosity asmeasured by the broad emission lines, with the jet power dominating over thedisk luminosity, in agreement with numerical simulations. This implies that themagnetic field threading the black hole horizon reaches the maximum valuesustainable by the accreting matter.

The power of relativistic jets is larger than the luminosity of their accretion disks