Show simple item record Habbal, Shadia Rifai Li, Xing 2008-12-04T15:29:35Z 2008-12-04T15:29:35Z 2003-12-01
dc.identifier.citation Habbal , S R & Li , X 2003 , ' Coronal loops heated by turbulence-driven Alfven waves ' Astrophysical Journal Letters , vol 598 , no. 2 , pp. L125-L128 . DOI: 10.1086/380776 en
dc.identifier.issn 2041-8213
dc.identifier.other PURE: 90064
dc.identifier.other PURE UUID: 3b7d6c04-6e83-430d-b768-3ea3045923df
dc.identifier.other dspace: 2160/1357
dc.description Li, Xing, Habbal, S. R., 'Coronal loops heated by turbulence-driven Alfven waves', The Astrophysical Journal, (2003) 598(2) pp.L125-L128 RAE2008 en
dc.description.abstract A two-fluid dynamic model of long-lived coronal loops is presented, whereby heating of the confined plasma is achieved by turbulence-driven Alfvén waves. It is assumed that the nonthermal motions inferred from spectral line observations in the transition region are due to Alfvén waves. It is also assumed that the turbulence is already fully developed when the waves are injected at the footpoint of the loop while the wave/turbulence energy is readily absorbed by the proton gas. The Coulomb coupling between protons and electrons subsequently heats the electron gas. The model produces a fairly uniform electron temperature in the coronal segment of the loop even though the heating is nonuniform. The model also reproduces electron densities of cm−3, in the range inferred from observations, as well as a moderate flow speed around 10 km s−1 along the loop. The turbulence heating mechanism adopted in this Letter, however, cannot produce stable loops with temperatures K. en
dc.language.iso eng
dc.relation.ispartof Astrophysical Journal Letters en
dc.rights en
dc.title Coronal loops heated by turbulence-driven Alfven waves en
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article en
dc.contributor.institution Department of Physics en
dc.description.status Peer reviewed en

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