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

Following the success of the first mission, the High-Resolution CoronalImager (Hi-C) was launched for a third time (Hi-C 2.1) on 29th May 2018 fromthe White Sands Missile Range, NM, USA. On this occasion, 329 seconds of 17.2nm data of target active region AR 12712 was captured with a cadence of ~4s,and a plate scale of 0.129''/pixel. Using data captured by Hi-C 2.1 andco-aligned observations from SDO/AIA 17.1 nm we investigate the widths of 49coronal strands. We search for evidence of substructure within the strands thatis not detected by AIA, and further consider whether these strands are fullyresolved by Hi-C 2.1. With the aid of Multi-Scale Gaussian Normalization (MGN),strands from a region of low-emission that can only be visualized against thecontrast of the darker, underlying moss are studied. A comparison is madebetween these low-emission strands with those from regions of higher emissionwithin the target active region. It is found that Hi-C 2.1 can resolveindividual strands as small as ~202km, though more typical strands widths seenare ~513km. For coronal strands within the region of low-emission, the mostlikely width is significantly narrower than the high-emission strands at~388km. This places the low-emission coronal strands beneath the resolvingcapabilities of SDO/AIA, highlighting the need of a permanent solar observatorywith the resolving power of Hi-C.

Is the High-Resolution Coronal Imager Resolving Coronal Strands? Results from AR 12712