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| Paper: |
Slow-Mode Oscillations of Hot Loops Excited at Flaring Footpoints |
| Volume: |
456, The Fifth Hinode Science Meeting |
| Page: |
127 |
| Authors: |
Wang, T.; Liu, W.; Ofman, L.; Davila, J. |
| Abstract: |
The analysis of a hot loop oscillation event using SOHO/SUMER, GOES SXI, and RHESSI observations
is presented. Damped Doppler shift oscillations were detected in the Fe xix line by SUMER,
and interpreted as a fundamental standing slow mode. The evolution of soft X-ray emission from
GOES/SXI and hard X-ray sources from RHESSI suggests that the oscillations of a large loop
are triggered by a small flare, which may be produced by interaction (local reconnection)
of this large loop with a small loop at its footpoint. This study provides clear evidence
supporting our early conjecture that the slow-mode standing waves in hot coronal loops are excited
by impulsive heating (small or microflares) at the loop's footpoint. |
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