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

Very Long Baseline Interferometry observations at 86 GHz reveal an almosthollow jet in M87 with a forked morphology. The detailed analysis presentedhere indicates that the spectral luminosity of the central spine of the jet inM87 is a few percent of that of the surrounding hollow jet $200 -400\mu\rm{as}$ from the central black hole. Furthermore, recent jet models inindicate that a hollow "tubular" jet can explain a wide range of plausiblebroadband spectra originating from jetted plasma located within $\sim30\mu\rm{as}$ of the central black hole, including the 230 GHz correlated fluxdetected by the Event Horizon Telescope. Most importantly, these hollow jetsfrom the inner accretion flow have an intrinsic power capable of energizing theglobal jet out to kiloparsec scales. Thus motivated, this paper considers newmodels of the event horizon magnetosphere (EHM) in low luminosity accretionsystems. Contrary to some models, the spine is not an invisible powerful jet.It is an intrinsically weak jet. In the new EHM solution, the accreted poloidalmagnetic flux is weak and the background photon field is weak. It is shown howthis accretion scenario naturally results in the dissipation of the accretedpoloidal magnetic flux in the EHM not the accumulation of poloidal fluxrequired for a powerful jet. The new solution indicates less large scalepoloidal magnetic flux (and jet power) in the EHM than in the surroundingaccretion flow and cannot support significant EHM driven jets.

A New Solution to the Plasma Starved Event Horizon Magnetosphere: Application to the Forked Jet in M87