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Solar Physics

, Volume 193, Issue 1–2, pp 77–92 | Cite as

Width Variations along Coronal Loops Observed by TRACE

  • J.A. Watko
  • J.A. Klimchuk
Article

Abstract

We have measured width variations along coronal loops observed by TRACE in the 171, 195, and 284 Å bandpasses. The loops are not significantly thicker in the middle compared to near the footpoints, and there is no correlation between the footpoint-to-midpoint expansion and the loop length. This applies to both post-flare and non-flare loops. The observations conflict with our present understanding of active region magnetic fields, and they have important implications for the structure and heating of the corona.

Keywords

Magnetic Field Active Region Important Implication Coronal Loop Loop Length 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • J.A. Watko
    • 1
  • J.A. Klimchuk
    • 2
  1. 1.U.S. Naval Research LaboratoryThe Johns Hopkins University, Praxis, Inc.U.S.A.
  2. 2.U.S. Naval Research LaboratoryWashingtonU.S.A.

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