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

We analyse the oscillatory properties of resonantly damped transverse kinkoscillations in two-dimensional prominence threads. The fine structures aremodelled as cylindrically symmetric magnetic flux tubes with a dense centralpart with prominence plasma properties and an evacuated part, both surroundedby coronal plasma. The equilibrium density is allowed to vary non-uniformly inboth the transverse and the longitudinal directions.We examine the influence oflongitudinal density structuring on periods, damping times, and damping ratesfor transverse kink modes computed by numerically solving the linear resistivemagnetohydrodynamic (MHD) equations. The relevant parameters are the length ofthe thread and the density in the evacuated part of the tube, two quantitiesthat are difficult to directly estimate from observations. We find that both ofthem strongly influence the oscillatory periods and damping times, and to alesser extent the damping ratios. The analysis of the spatial distribution ofperturbations and of the energy flux into the resonances allows us to explainthe obtained damping times. Implications for prominence seismology, the physicsof resonantly damped kink modes in two-dimensional magnetic flux tubes, and theheating of prominence plasmas are discussed.

Magnetohydrodynamic kink waves in two-dimensional non-uniform prominence threads