BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260610T185939Z
UID:https://www.mps.mpg.de/events/18348/4914875
DTSTART:20190425T090000Z
DTEND:20190425T100000Z
CLASS:PUBLIC
CREATED:20190418T065732Z
DESCRIPTION:We carry out multi-dimensional kinematic analysis of a prominen
 ce eruption in order to characterise the role of eruptive ideal-MHD instab
 ilities. Using SDO/AIA and STEREO/EUVI-A we reconstruct the leading edge o
 f the prominence in 3D\, as observed between 26-Feb-2013 20:30:00 UT and 2
 7-Feb-2013 05:45:00 UT. We use a novel semi-automated\, dual\, edge detect
 ion method to precisely detect the leading edge and create height-time pro
 files from SDO/AIA image sequences in He II 30.4 nm\, to analyse the kinem
 atics of erupting plasma along radial slits intersecting the leading edge 
 coordinates. Constraining the power index parameter of fitted functions ch
 aracterizing the linear and non-linear phases of the eruption\, we investi
 gate a set of fits of the eruption profile across all slits and identify t
 he best fit in order to compare different eruption mechanisms. We also par
 ameterise the onset time of the acceleration phase in order to confine the
  start time of the torus instability. For the first time\, 3D kinematic an
 alysis has identified a significant delay in the onset time of the acceler
 ation phase together with a corresponding critical height at which acceler
 ation starts to occur\, as a function of position along the leading edge\,
  which is in remarkable agreement with the determination of the critical h
 eight according to the decay index governing the torus instability.\nSpeak
 er: Thomas Rees-Crockford 
LAST-MODIFIED:20260220T073324Z
LOCATION:Northumbria University (broadcasted at MPS)\, Room: Auditorium
ORGANIZER;CN=Andreas Lagg:mailto:
SUMMARY:ESPOS: ESP Online Seminar: 2D and 3D Kinematic Analysis of an Ideal
 -MHD Prominence Eruption (Thomas Rees-Crockford)
URL;VALUE=URI:https://www.mps.mpg.de/events/18348/4914875
END:VEVENT
END:VCALENDAR