Open AccessHinode EUV Imaging Spectrometer Observations of Active Region Loop Morphology: Implications for Static Heating Models of Coronal Emission
Author(s) -
David H. Brooks,
Harry P. Warren,
Ignacio UgarteUrra,
Keiichi Matsuzaki,
David R. Williams
Publication year - 2007
Publication title -
publications of the astronomical society of japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.99
H-Index - 110
eISSN - 2053-051X
pISSN - 0004-6264
DOI - 10.1093/pasj/59.sp3.s691
Subject(s) - physics , coronal loop , imaging spectrometer , astrophysics , corona (planetary geology) , extreme ultraviolet lithography , photosphere , hydrostatic equilibrium , extreme ultraviolet , spectrometer , coronal mass ejection , astronomy , spectral line , plasma , optics , solar wind , nuclear physics , laser , venus , astrobiology
Theoretically, magnetic fields are expected to expand as they rise above the photosphere and into the corona, so the apparent uniform cross-sections of active region loops are difficult to understand. There has been some debate as to whether coronal loops really have constant cross-sections, or are actually unresolved and composed of expanding threads within the constant cross-section envelopes. F...
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