TY - JOUR
T1 - Spectral Signatures of Transient Heating in the Solar Corona
AU - Taroyan, Youra
AU - Burrows, Keiran
PY - 2013/6/1
Y1 - 2013/6/1
N2 - Hinode/EIS observations of an active region are presented. Intensity and
Doppler velocity maps for different emission lines are constructed.
Consistent with previous results, the Doppler velocities near the
footpoints of coronal loops appear to be blue shifted for emission lines
with temperatures above 1 MK. The gradual transition from blue shifts at
temperatures above 1 MK to red shifts at temperatures below 1 MK is
addressed through numerical modeling of loop dynamics. The simulation
results are converted into synthetic EIS observations and compared with
the actual measurements. Persistent blue shifts, blue wing enhancements,
and red shifts observed in EUV lines are interpreted as a signature of
repetitive heating occurring near the loop footpoints on a time scale of
several minutes.
AB - Hinode/EIS observations of an active region are presented. Intensity and
Doppler velocity maps for different emission lines are constructed.
Consistent with previous results, the Doppler velocities near the
footpoints of coronal loops appear to be blue shifted for emission lines
with temperatures above 1 MK. The gradual transition from blue shifts at
temperatures above 1 MK to red shifts at temperatures below 1 MK is
addressed through numerical modeling of loop dynamics. The simulation
results are converted into synthetic EIS observations and compared with
the actual measurements. Persistent blue shifts, blue wing enhancements,
and red shifts observed in EUV lines are interpreted as a signature of
repetitive heating occurring near the loop footpoints on a time scale of
several minutes.
UR - http://hdl.handle.net/2160/11250
U2 - 10.1088/1742-6596/440/1/012010
DO - 10.1088/1742-6596/440/1/012010
M3 - Article
SN - 1742-6588
VL - 440
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - Conference 1
M1 - 012010
ER -