Effects of magnetic shear,spot, and plage rotation on prominence evolution |
| |
| Authors: | R R Rausaria S S Gupta R Selvendran K Sundara Raman Jagdev Singh |
| |
| Institution: | (1) Indian Institute of Astrophysics, 624 103 Kodaikanal, India;(2) Indian Institute of Astrophysics, 560 034 Bangalore, India |
| |
| Abstract: | We have studied the evolution of two dark H filaments as prominences during their disk passage from 12 to 19 February, 1992 and 6 to 17 March, 1992, using Kodaikanal Observatory H and Caii K spectroheliograms. Both the filaments were well outside the spot regions. However, they were connected to sunspots by small threads. Outside the spot regions, the filaments were also anchored between opposite polarity plage regions. Both the filaments were almost straight in the beginning. However, they acquired a curved shape (inverted U-shape) as the spot and plages underwent rotation. It is shown that rotation of the plage and spot plays an important role in the evolution of prominences, one serving as the anchor and the other imparting necessary shear. Once the shear reaches a critical value it starts unwinding the filaments, resulting in the fine structure of the two prominences studied. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
