Micro- and macroinhomogeneities of density in a quiescent prominence

Author(s):  
L. N. Kurochka ◽  
A. I. Kiryukhina
Keyword(s):  
1979 ◽  
Vol 44 ◽  
pp. 41-47
Author(s):  
Donald A. Landman

This paper describes some recent results of our quiescent prominence spectrometry program at the Mees Solar Observatory on Haleakala. The observations were made with the 25 cm coronagraph/coudé spectrograph system using a silicon vidicon detector. This detector consists of 500 contiguous channels covering approximately 6 or 80 Å, depending on the grating used. The instrument is interfaced to the Observatory’s PDP 11/45 computer system, and has the important advantages of wide spectral response, linearity and signal-averaging with real-time display. Its principal drawback is the relatively small target size. For the present work, the aperture was about 3″ × 5″. Absolute intensity calibrations were made by measuring quiet regions near sun center.


Author(s):  
Oddbjørn Engvold ◽  
Eberhart Jensen ◽  
Yi Zhang ◽  
Nils Brynildsen
Keyword(s):  

Solar Physics ◽  
1986 ◽  
Vol 104 (2) ◽  
pp. 313-320 ◽  
Author(s):  
Tokio Tsubaki ◽  
Akitsugu Takeuchi

Solar Physics ◽  
1989 ◽  
Vol 123 (1) ◽  
pp. 143-160 ◽  
Author(s):  
J. M. Fontenla ◽  
A. I. Poland
Keyword(s):  

Author(s):  
Serge Koutchmy ◽  
Jack Zirker ◽  
Lou B. Gilliam ◽  
Roy Coulter ◽  
Stephen Hegwer ◽  
...  

1967 ◽  
Vol 149 ◽  
pp. 269 ◽  
Author(s):  
William I., III Thompson ◽  
Donald E. Billings
Keyword(s):  

1998 ◽  
Vol 167 ◽  
pp. 45-54 ◽  
Author(s):  
D. Moses ◽  
C.M. Korendyke ◽  
N. Moulton ◽  
J. Newmark

AbstractWe describe the observational capabilities of the SOHO EIT and LASCO instruments for prominence research. A detailed comparison of EIT He II λ304 and BBSO Hα images of a quiescent prominence reveals differences in fine scale structure which are attributed to differences in radiation emission and transport mechanisms. Absorption features present in coronal EIT images are attributed to dense prominence features located between the source of the coronal emission and the observer. These features provide the locations of prominence material in coronal image sequences. Observations of a prominence eruption in both EIT He II and LASCO C1 Fe XIV images show the heating of chromospheric material to coronal temperatures during the prominence eruption. In the last phase of the prominence eruption, a coronal mass ejection (CME) is initiated as a dark cavity forms over the prominence material and a bright loop-like structure forms over the dark cavity.


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