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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Aurorae are detected from all the magnetized planets in our Solar System,including Earth. They are powered by magnetospheric current systems that leadto the precipitation of energetic electrons into the high-latitude regions ofthe upper atmosphere. In the case of the gas-giant planets, these auroraeinclude highly polarized radio emission at kilohertz and megahertz frequenciesproduced by the precipitating electrons, as well as continuum and line emissionin the infrared, optical, ultraviolet and X-ray parts of the spectrum,associated with the collisional excitation and heating of thehydrogen-dominated atmosphere. Here we report simultaneous radio and opticalspectroscopic observations of an object at the end of the stellar mainsequence, located right at the boundary between stars and brown dwarfs, fromwhich we have detected radio and optical auroral emissions both powered bymagnetospheric currents. Whereas the magnetic activity of stars like our Sun ispowered by processes that occur in their lower atmospheres, these aurorae arepowered by processes originating much further out in the magnetosphere of thedwarf star that couple energy into the lower atmosphere. The dissipated poweris at least four orders of magnitude larger than what is produced in the Jovianmagnetosphere, revealing aurorae to be a potentially ubiquitous signature oflarge-scale magnetospheres that can scale to luminosities far greater thanthose observed in our Solar System. These magnetospheric current systems mayalso play a part in powering some of the weather phenomena reported on browndwarfs.

Magnetospherically driven optical and radio aurorae at the end of the stellar main sequence