Ryohko Ishikawa
(National Astronomical Observatory of Japan)
21/06/2016, 14:15
The Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) is
a NASA sounding-rocket
experiment, which was launched from White Sands in the US on
September 3, 2015, and
successfully made the observations during its 5 minutes
ballistic flight. The CLASP
observations showed that the scattering polarization in the
hydrogen Lya line (121.57
nm), which originates in the upper chromosphere...
Viggo Hansteen
(Institutt for teoretisk astrofysikk, Universitetet i Oslo)
21/06/2016, 14:45
While the flux emergence of photospheric small-scale structures already are well
observed and understood, our understanding of the impact of the emerging flux on the
energetics and magnetic structure of the above-lying atmosphere is insufficient, as
is the fate of the rising magnetic field and how it couples the different regions of
the atmosphere. In this talk we will present realistic"...
David Graham
(INAF Osservatorio Astrofisico di Arcetri)
21/06/2016, 16:00
We follow up on our recent analysis of the X-Class flare SOL2014-09-10T17:45, where
we studied the impulsive phase dynamics of tens of individual flaring kernels", in
both coronal (Fe XXI) and chromospheric (MgII) lines observed at high cadence with
IRIS. We concentrate here on the chromospheric aspect of the phenomenon, extending
the analysis to multiple spectral lines of Mg II, Fe II,...
Marina Battaglia
(University of Applied Sciences Northwestern Switzerland)
21/06/2016, 16:40
In the common flare scenario beams of accelerated electrons deposit large amounts of
energy into the chromosphere, heating it to MK temperatures and causing
chromospheric evaporation, i.e. the expansion of the heated plasma into the magnetic
loop. What is the importance of energy deposition by electron beams in driving
evaporation relative to other types of energy deposition such as by...