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

A solar type-I noise storm is produced by accelerated particle beamsgenerated at active regions undergoing magnetic field restructuring. Theirintensity varies by orders of magnitude within sub-second and sub-MHz scales.But, the morphological evolution of these sources are not studied at thesescales, due to the lack of required imaging cadence and fidelity in metrewavebands. Using data from the Murchison Widefield Array (MWA), this work exploresthe co-evolution of size, sky-orientation and intensity of a noise storm sourceassociated with a weak microflare. The work presents the discovery of twocorrelated modes of evolution in the source parameters: a sausage like \s\ modewhere the source intensity and size shows an anti-correlated evolution; and atorsional like \T\ mode where the source size and sky-orientation shows acorrelated evolution. A flare mediated mode conversion is observed from \T\ to\s\ for the first time in these sources. These results support the idea ofbuild up of magnetic stress energy in braided active region loops, which latergo unstable causing flares and particle acceleration until they relax to aminimally braided state. The discovered mode conversion can be a futurediagnostic to such active region phenomena.

Discovery of correlated evolution in solar noise storm source parameters: Insights on magnetic field dynamics during a microflare