TRACE observation of damped coronal loop oscillations: Implicit for coronal heating

VM Nakariakov, L Ofman, EE Deluca, Bernard Roberts, JM Davlia

Research output: Contribution to journalArticlepeer-review

850 Citations (Scopus)

Abstract

The imaging telescope on board the Transition Region and Coronal Explorer (TRACE) spacecraft observed the decaying transversal oscillations of a Long [(130 +/- 6) x 10(6) meters], thin [diameter (2.0 +/- 0.36) x 10(6) meters], bright coronal Loop in the 171 angstrom Fe-IX emission line. The oscillations were excited by a solar flare in the adjacent active region. The decay time of the oscillations is 14.5 +/- 2.7 minutes for an oscillation with a frequency 3.90 +/- 0.13 millihertz, The coronal dissipation coefficient is estimated to be eight to nine orders of magnitude Larger than the theoretically predicted classical value. The larger dissipation coefficient may solve existing difficulties with wave heating and reconnection theories.

Original languageEnglish
Pages (from-to)862-864
Number of pages3
JournalScience
Volume285
Publication statusPublished - 6 Aug 1999

Keywords

  • RESONANT ABSORPTION
  • ALFVEN WAVES
  • SOLAR CORONA
  • SCALING LAWS
  • DRIVEN

Fingerprint

Dive into the research topics of 'TRACE observation of damped coronal loop oscillations: Implicit for coronal heating'. Together they form a unique fingerprint.

Cite this