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Jets or high velocity flows revealed in high-cadence spectrometer and imager co-observations?
 

Summary: Jets or high velocity flows revealed in high-cadence spectrometer
and imager co-observations?
M.S. Madjarska1
, J.G. Doyle2
, D. Innes1
and W. Curdt1
madjarska@mps.mpg.de
ABSTRACT
We report on active region EUV dynamic events observed simultaneously at
high-cadence with SUMER/SoHO and TRACE. Although the features appear
in the TRACE Fe ix/x 171 A images as jets seen in projection on the solar
disk, the SUMER spectral line profiles suggest that the plasma has been driven
along a curved large scale magnetic structure, a pre-existing loop. The SUMER
observations were carried out in spectral lines covering a large temperature range
from 104
K to 106
K. The spectral analysis revealed that a sudden heating from
an energy deposition is followed by a high velocity plasma flow. The Doppler
velocities were found to be in the range from 90 to 160 km s-1
. The heating

  

Source: Armagh Observatory

 

Collections: Physics