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

被引：816
|
作者：
Nakariakov, VM
Ofman, L [1 ]
DeLuca, EE
Roberts, B
Davila, JM
机构：
[1] NASA, Goddard Space Flight Ctr, Raytheon ITSS, Greenbelt, MD 20771 USA
[2] Univ St Andrews, Sch Math & Computat Sci, St Andrews KY16 9SS, Fife, Scotland
[3] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
来源：
SCIENCE | 1999年 / 285卷 / 5429期
关键词：
D O I：
10.1126/science.285.5429.862
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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.
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收藏
页码：862 / 864
页数：3
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