tnirperp A A :sa detic eb oT aa/gro.secneicspde.www//:ptth ta elbaliava dna secneicS PDE yb dehsilbup elcitrA The extent of 3-min oscillations in regions other than sunspot plumes Chia-Hsien Lin1 , D. Banerjee2 , J.G. Doyle1 , and E. O'Shea1 1 2 Armagh Observatory, College Hill, Armagh BT61 9DG, N. Ireland ... To find the p ossible sources of these 3-min oscillations outside of the umbra, we compared the oscillations of single pixels in different regions. ... The observation time is 07:37:29. ...