Monday 9th, November 2009, 12:00pm
Pratt Conference Room, 60 Garden Street
Enrico Landi (NRL) - Physical conditions in a CME from Hinode, STEREO, and SOHO observations.
In the present work we analyze multiwavelength observations from Hinode, SOHO and
STEREO of the early phases of a Coronal Mass Ejection (CME). We use Hinode/EIS and
SOHO/UVCS high resolution spectra to measure the physical properties of the CME
ejecta as a function of time at 1.1 and 1.9 solar radii. Hinode/XRT images are
used in combination with EIS spectra to constrain the high temperature plasma
properties of the ejecta. SECCHI/EUVI, SECCHI/COR1 and SOHO/LASCO images are used
to measure the CME velocity and acceleration. The combination of measurements of
plane of the sky velocities and line of sight speeds from EIS and UVCS Doppler
shifts allows us to determine the absolute velocities of the CME plasma at 1.1
and 3.0 solar radii. Plasma properties, dynamical status, thermal structure and
brightness distributions are used to constrain the energy contents of the CME
plasma and to compare it to theoretical predictions from models of CME plasma
heating and acceleration.