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

Localised transient EUV brightenings, sometimes named `campfires', occurthroughout the quiet-Sun. However, there are still many open questions aboutsuch events, in particular regarding their temperature range and dynamics. Inthis article, we aim to determine whether any transition region response can bedetected for small-scale EUV brightenings and, if so, to identify whether themeasured spectra correspond to any previously reported bursts in the transitionregion, such as Explosive Events (EEs). EUV brightenings were detected in a~29.4 minute dataset sampled by Solar Orbiter's Extreme Ultraviolet Imager on 8March 2022 using an automated detection algorithm. Any potential transitionregion response was inferred through analysis of imaging and spectral datasampled through coordinated observations conducted by the Interface RegionImaging Spectrograph (IRIS). EUV brightenings display a range of responses inIRIS slit-jaw imager (SJI) data. Some events have clear signatures in the Mg IIand Si IV SJI filters, whilst others have no discernible counterpart. Bothextended and more complex EUV brightenings are found to, sometimes, haveresponses in IRIS SJI data. Examples of EUI intensities peaking before, during,and after their IRIS counterparts were found in lightcurves constructedco-spatial to EUV brightenings. Importantly, therefore, it is likely that notall EUV brightenings are driven in the same way, with some seemingly beingmagnetic reconnection driven and others not. A single EUV brightening occurredco-spatial to the IRIS slit, with its spectra matching the properties of EEs.EUV brightenings is a term used to describe a range of small-scale event in thesolar corona. The physics responsible for all EUV brightenings is likely notthe same and, therefore, more research is required to assess their importancetowards global questions in the field, such as coronal heating.

EUV brightenings in the quiet-Sun: Signatures in spectral and imaging data from the Interface Region Imaging Spectrograph