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dc.contributor.author
Nuevo, Federico Alberto
dc.contributor.author
Huang, Zhenguang
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Frazin, Richard A.
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Manchester IV, Ward B.
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Jin, Meng
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Vasquez, Alberto Marcos
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dc.date.available
2015-06-09T17:58:24Z
dc.date.issued
2013-07-19
dc.identifier.citation
Nuevo, Federico Alberto; Huang, Zhenguang; Frazin, Richard A.; Manchester IV, Ward B.; Jin, Meng; et al.; Evolution of the Global Temperature Structure of the Solar Corona During the Minimum between Solar Cycles 23 and 24; Iop Publishing Ltd; Astrophysical Journal; 773; 9; 19-7-2013; 14pp
dc.identifier.issn
0004-637X
dc.identifier.uri
http://hdl.handle.net/11336/651
dc.description.abstract
The combination of Differential Emission Measure Tomography (DEMT) with extrapolation of the photospheric magnetic field allows determinatio/n of the electron density and electron temperature along individual magnetic field lines. This is especially useful in quiet Sun (QS) plasmas where individual loops cannot otherwise be identified. In Paper I (Huang et al. 2012), this approach was applied to study QS plasmas during Carrington rotation (CR) 2077, at the minimum between solar cycles (SC)-23 and 24. In that work, two types of quiet QS coronal loops were identified: ``up" loops in which the temperature increases with height, and ``down" loops in which the temperature decreases with height. While the first ones were expected, the latter ones were a surprise and, furthermore, were found to be ubiquitous in the low-latitude corona. In the present work we extend the analysis to 11 CRs around the last solar minimum. We find that the ``down´´ population, always located at low-latitudes, was maximum at the time when the sunspot number was minimum, and the number of down loops systematically increased during the declining phase of SC-23 and diminished during the rising phase of SC-24. ``Down´´ loops are found to have systematically larger values of $eta$ than do ``up´´ loops. These discoveries are interpreted in terms of excitation of Alfv´en waves in the photosphere, and mode conversion and damping in the low corona.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Iop Publishing Ltd
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.source
© 2013. The American Astronomical Society.
dc.subject
Sun: Corona
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Sun: Magnetic Topology
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Sun: Uv Radiation
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Sun: Evolution - Sunspots
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
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dc.title
Evolution of the Global Temperature Structure of the Solar Corona During the Minimum between Solar Cycles 23 and 24
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
773
dc.journal.number
9
dc.journal.pagination
14pp
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Chicago
dc.conicet.avisoEditorial
C 2013. The American Astronomical Society. All rights reserved.
dc.description.fil
Fil: Nuevo, Federico Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio(i); Argentina
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Fil: Huang, Zhenguang. Department of Atmospheric, Oceanic and Space Sciences. University of Michigan; Estados Unidos de América;
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Fil: Frazin, Richard A.. Department of Atmospheric, Oceanic and Space Sciences. University of Michigan; Estados Unidos de América;
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Fil: Manchester IV, Ward B.. Department of Atmospheric, Oceanic and Space Sciences. University of Michigan; Estados Unidos de América;
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Fil: Jin, Meng. Department of Atmospheric, Oceanic and Space Sciences. University of Michigan; Estados Unidos de América;
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Fil: Vasquez, Alberto Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio(i); Argentina
dc.journal.title
Astrophysical Journal
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/0004-637X/773/1/9
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/773/1/9/meta
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