Abstract


  REFLECTING MHD WAVES IN CORONAL ARCADE LOOPS

  P. Kumar, Korea Astronomy and Space Science Institute (KASI), ptomar2006@gmail.com

Using SDO/AIA hot channels images (131 and 94 A), we discovered reflecting EUV disturbances in hot (~8-10 MK) coronal arcade loops. These reflecting EUV disturbances propagate back and forth between in the footpoints of the arcade loops with a phase speed of ~400-500 km/s and decay after 3-4 periods. These disturbances successfully explain the SUMER hot loop Doppler shift oscillations and their interpretation as a slow-mode wave.