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

In this paper, we present a detailed morphological, kinematic, and thermalanalysis of two homologous magnetic flux ropes (MFRs) from NOAA 11515 on 2012July 8--9. The study is based on multi-wavelength and dual-perspective imagingobservations from the Solar Dynamics Observatory and the Solar TerrestrialRelations Observatory Ahead spacecraft, which can well reveal the structure andevolution of the two MFRs. We find that both of the MFRs show up in multiplepassbands and their emissions mainly consist of a cold component peaking at atemperature of $\sim$0.4--0.6 MK and a hot component peaking at $\sim$7--8 MK.The two MFRs exhibit erupting, expanding, and untwisting motions that manifestdistinctive features from two different viewpoints. Their evolution can bedivided into two stages, a fast-eruption stage with speeds of about 105--125 kms$^{-1}$ for MFR-1 and 50--65 km s$^{-1}$ for MFR-2 and a slow-expansion (oruntwisting) stage with speeds of about 10--35 km s$^{-1}$ for MFR-1 and 10--30km s$^{-1}$ for MFR-2 in the plane of sky. We also find that during thetwo-stage evolution, the high temperature features mainly appear in theinterface region between MFRs and ambient magnetic structures and also in thecenter of MFRs, which suggests that some heating processes take place in suchplaces like magnetic reconnection and plasma compression. These observationalresults indicate that the eruption and untwisting processes of MFRs are coupledwith the heating process, among which an energy conversion exists.

Multi-wavelength and Dual-perspective Observations of Eruption and Untwisting of Two Homologous Magnetic Flux Ropes