Spectral analysis and the two-dimensional distribution of physical parameters in a quiescent prominence

Details Spectral analysis and the two-dimensional distribution of physical parameters in a quiescent prominence Spectral analysis and the two-dimensional distribution of physical parameters in a quiescent prominence

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987soph..114..245z&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 114, no. 2, 1987, p. 245-252. Research supported by the Chinese National Foundation.

Physics

13

Magnetic Field Configurations, Solar Magnetic Field, Solar Prominences, Spectrum Analysis, Calcium, Electron Energy, H Alpha Line, Line Spectra

Scientific paper

The profiles of Hα and Ca II K lines of a arch quiescent prominence on April 1, 1971 have been analyzed and the two-dimensional distributions of electron temperature Te, micro-turbulence velocity vt and the column number density of hydrogen along the line-of-sight NH have been obtained. The electron temperature at the central part of the prominence and along the two arcades are greater than that at the edges, while the distribution of the micro-turbulence velocity in these regions is opposite. The contour lines of Te, vt, and NH are predominantly vertical rather than horizontal. This implies that the height-variation of physical parameters in filamentary structure is small. The arrangement of this structure in the prominence is likely to be arched and is probably in the direction of magnetic field lines.

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