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dc.contributor.advisor Bradshaw, Stephen
dc.creatorReep, Jeffrey
dc.date.accessioned 2013-07-24T19:46:12Z
dc.date.accessioned 2013-07-24T19:46:17Z
dc.date.available 2013-07-24T19:46:12Z
dc.date.available 2013-07-24T19:46:17Z
dc.date.created 2012-12
dc.date.issued 2013-07-24
dc.date.submitted December 2012
dc.identifier.urihttps://hdl.handle.net/1911/71685
dc.description.abstract We present observational and numerical evidence supporting the theory of impulsive heating of the solar corona. We have run numerical simulations solving the hydrodynamic equations for plasma confined to a magnetic flux tube, for the two distinct cases of steady and impulsive heating. We find that steady heating cannot explain the observed amount of low-temperature plasma in active regions on the sun. The results for impulsive heating closely match those of the observations. The ratio of heating time to cooling time predominantly determines the observed temperature distribution of the plasma. We have also identified an observational bias in calculating intensities of spectral lines in previous studies, which causes an under-estimation of low-temperature plasma. We predict Doppler shifts in the observed line emission that are in agreement with observations, and which may serve as a diagnostic of the strength of heating. We conclude that impulsive heating of active region coronal loops is more likely than steady heating.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectSolar physics
Coronal physics
Solar atmosphere
Coronal heating
Coronal loops
Active regions
Impulsive heating
Emission measure
Doppler shifts
Corona
Rice University
Astrophysics
dc.title Evidence for Impulsive Heating of Active Region Coronal Loops
dc.contributor.committeeMember Alexander, David
dc.contributor.committeeMember Ecklund, Karl
dc.date.updated 2013-07-24T19:46:18Z
dc.identifier.slug 123456789/ETD-2012-12-220
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Physics and Astronomy
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.identifier.citation Reep, Jeffrey. "Evidence for Impulsive Heating of Active Region Coronal Loops." (2013) Master’s Thesis, Rice University. https://hdl.handle.net/1911/71685.


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