Fig. 3

Processed time-distance intensity maps of plume region marked in Fig. 1 summed over 12″ width in the X-direction. The quasi-periodic (in the range 10–20 min) propagating disturbances are observed with speed ≈116.5 ± 4.6 km s-1 in 171 Å (top panel) and ≈149.7 ± 6.4 km s-1 in 193 Å (bottom panel) AIA/SDO channels. Disturbances are reaching very far in the off-limb corona.
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