Devilish details! Observational signatures of a multi-stranded,
nanoflare-heated coronal loop
Robert Walsh (University of Central Lancashire)
Tuesday 10th June 2008, 14:30
Pratt conference room, 60 Garden Street
There is a growing body of evidence that the solar atmospheric loops
observed by current instrumentation onboard SOHO, TRACE, Hinode and
STEREO may consist of many sub-resolution elements. Subsequently, the
total emission we observe will be the combined radiation of many
evolving plasma strands.
We present a "global loop" as 125 individual strands, with each
modelled independently by a one-dimensional hydrodynamic
simulation. The energy across the strands is released in nanoflares -
localised, discrete heating events - and the strands are "coupled"
through the frequency distribution of this energy input which follows
a power law distribution.
The observational consequences of such a model are examined. Both
forward folding of the plasma parameters through the various
instrument response functions as well as calculation of a differential
emission measure will be displayed to show that when it comes to
understanding the dynamics of loops, the devil might really be in the