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

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

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

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

Applied Mathematics

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	862-864
Number of pages	3
Journal	Science
Volume	285
Publication status	Published - 6 Aug 1999

Keywords

RESONANT ABSORPTION
ALFVEN WAVES
SOLAR CORONA
SCALING LAWS
DRIVEN

Cite this

@article{19a9179ba8054be69c0401cd159adbcd,

title = "TRACE observation of damped coronal loop oscillations: Implicit for coronal heating",

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.",

keywords = "RESONANT ABSORPTION, ALFVEN WAVES, SOLAR CORONA, SCALING LAWS, DRIVEN",

author = "VM Nakariakov and L Ofman and EE Deluca and Bernard Roberts and JM Davlia",

year = "1999",

month = aug,

day = "6",

language = "English",

volume = "285",

pages = "862--864",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

}

TY - JOUR

T1 - TRACE observation of damped coronal loop oscillations: Implicit for coronal heating

AU - Nakariakov, VM

AU - Ofman, L

AU - Deluca, EE

AU - Roberts, Bernard

AU - Davlia, JM

PY - 1999/8/6

Y1 - 1999/8/6

N2 - 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.

AB - 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.

KW - RESONANT ABSORPTION

KW - ALFVEN WAVES

KW - SOLAR CORONA

KW - SCALING LAWS

KW - DRIVEN

M3 - Article

SN - 0036-8075

VL - 285

SP - 862

EP - 864

JO - Science

JF - Science

ER -

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

Abstract

Keywords

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