Coronal loops heated by turbulence-driven Alfven waves

H...............H

Show simple item record

dc.contributor.author Habbal, Shadia Rifai
dc.contributor.author Li, Xing
dc.date.accessioned 2008-12-04T15:29:35Z
dc.date.available 2008-12-04T15:29:35Z
dc.date.issued 2003-12-01
dc.identifier.citation Habbal , S R & Li , X 2003 , ' Coronal loops heated by turbulence-driven Alfven waves ' The Astrophysical Journal Letters , vol 598 , no. 2 , pp. L125-L128 . en
dc.identifier.issn 2041-8213
dc.identifier.other PURE: 90064
dc.identifier.other dspace: 2160/1357
dc.identifier.uri http://hdl.handle.net/2160/1357
dc.identifier.uri http://www.journals.uchicago.edu/ApJ/ en
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 The Astrophysical Journal Letters en
dc.title Coronal loops heated by turbulence-driven Alfven waves en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1086/380776
dc.contributor.institution Institute of Mathematics & Physics (ADT) en
dc.contributor.institution Mathematics and Physics en
dc.description.status Peer reviewed en


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Cadair


Advanced Search

Browse

My Account