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

The objectives of the present study is to provide a better physicalunderstanding of the complex inter-relation and evolution of several solarcoronal features comprising a double-peak flare, a coronal dimming caused by aCME, a CME-driven compression, and a fast-mode wave. For the first time, theevolution of an asymmetric eruptive filament is analysed in simultaneous SUMERspectroscopic and TRACE and EIT imaging data. We use imaging observations fromEIT and TRACE in the 195A channel and spectroscopic observations from the CDSin a rastering and SUMER in a sit-and-stare observing mode. The SUMER spectracover spectral lines with formation temperatures from logT(K) ~ 4.0 to 6.1.Although the event was already analysed in two previous studies, our analysisbrings a wealth of new information on the dynamics and physical properties ofthe observed phenomena. We found that the dynamic event is related to a complexflare with two distinct impulsive peaks, one according to the GOESclassification as C1.1 and the second - C1.9. The first energy release triggersa fast-mode wave and a CME with a clear CME driven compression ahead of it.This activity is related to, or possibly caused, by an asymmetric filamenteruption. The filament is observed to rise with its leading edge moving at aspeed of ~300 km/s detected both in the SUMER and CDS data. The rest of thefilament body moves at only ~150 km/s while untwisting. No signature is foundof the fast-mode wave in the SUMER data, suggesting that the plasma disturbedby the wave had temperatures above 600 000 K. The erupting filament material isfound to emit only in spectral lines at transition region temperatures. Earlieridentification of a coronal response detected in the Mg X 609.79 A line isfound to be caused by a blend from the O IV 609.83 A line.

A coronal wave and an asymmetric eruptive filament in SUMER, CDS, EIT, and TRACE co-observations