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Broadening of Fe X (6374 Å) profiles above the limb in a coronal hole (1994)

Hassler, D. M. ; Moran, T. G.

Springer

Space science reviews 70 (1994), S. 373-377

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Details

ISSN: 1572-9672

Schlagwort(e): Solar corona ; Coronal holes ; Solar wind ; UV spectroscopy

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Profiles of the visible Fe X (6374 Å) coronal emission line as a function of height above the limb were obtained out to 1.16 solar radii in a coronal hole using the NSO/Sacramento Peak Observatory Coronagraph, Universal Spectrograph and a CCD camera. These are the first coronal line profiles obtained as a function of height in a coronal hole from the ground. Analysis of the line widths suggests a large component of nonthermal broadening which increases with height ranging from 40 to 60 km/s, depending upon the assumed temperature or thermal component of the profile.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00777895

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