Determination of plasma parameters in a quiescent prominence

Details Determination of plasma parameters in a quiescent prominence Determination of plasma parameters in a quiescent prominence

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...260..419w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 260, no. 1-2, p. 419-430.

Astronomy and Astrophysics

Astrophysics

16

H Alpha Line, Plasma Diagnostics, Solar Prominences, Radiative Transfer, Spectroheliographs

Scientific paper

We present H-alpha observations and analysis of a quiescent, polar crown prominence observed on June 11, 1988 with the MSDP spectrograph at the Pic du Midi Observatory. Two-dimensional maps of H-alpha intensities and line-of-sight velocities have been obtained. The large-scale velocity pattern consisting of cells and elongated structures is stable on a time scale of about 1 min, but evolves continuously and undergoes large changes in shape and amplitude during one hour. This behavior of the velocity field suggests the presence of twists in flux ropes or shear motions. Further, comparing the absolute observed intensities with values from non-LTE radiative computations we estimate the range of electron densities, source functions and optical thicknesses in different parts of the prominence. For upper parts of the prominence we obtain electron densities in the range 1 - 5 x l0 exp 10/cu cm.

Affiliated with

Also associated with

No associations

Rating

Determination of plasma parameters in a quiescent prominence does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Determination of plasma parameters in a quiescent prominence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determination of plasma parameters in a quiescent prominence will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1203171