Speaker
Patrick Antolin
(School of Mathematics and Statistics, University of St Andrews)
Description
The solar atmosphere is permeated with MHD waves of Alfvenic
character. Such waves
are considered important energy carriers through which the
heating and morphology of
the corona may be explained. The highly inhomogeneous
coronal environment,
particularly in solar prominences, ensures the co-existence
of different wave modes
that are expected to be coupled through the robust and
efficient mechanism of
resonant absorption. While energy transfer between wave
modes is ensured, significant
dissipation and heating is far more difficult to achieve.
Alfvenic turbulence has
been suggested as a possible dissipation mechanism for
Alfvenic MHD waves in the
solar atmosphere. In this talk I will show how resonant
absorption is key in
achieving a sustained generation of Alfvenic turbulence and
braiding, through which
significant heating can be achieved. The observational
signatures of this mechanism
have been detected in a solar prominence by combining high
resolution imaging and
spectroscopic instruments such as Hinode and IRIS.
Primary author
Patrick Antolin
(School of Mathematics and Statistics, University of St Andrews)
