BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260307T113228Z
UID:https://www.mps.mpg.de/events/41141/2169
DTSTART:20250313T100000Z
DTEND:20250313T110000Z
CLASS:PUBLIC
CREATED:20250306T140410Z
DESCRIPTION:On October 28\, 2021 the first X-class solar flare of Solar Cyc
 le 25 occurred in active region NOAA AR 12887 with a peak at 15:35 UT. It 
 produced the rare event of ground-level enhancement of the solar relativis
 tic proton flux and a global extreme ultraviolet wave\, along with a fast 
 halo coronal mass ejection (CME) as seen from Earth’s perspective. A few
  hours before the flare\, a slower CME had erupted from a quiet Sun region
  just behind the northwestern solar limb. Solar Orbiter was almost aligned
  with the Sun-Earth line and\, during a synoptic campaign\, its coronagrap
 h Metis detected the two CME events in both Visible Light (VL) and UltraVi
 olet (UV) channels. The earlier CME took place in the north-west (NW) sect
 or of Metis field of view\, while several bright features of the flare-rel
 ated event appeared mostly to the south-east (SE). The NW and SE events ha
 ve two distinct origins\, but were both characterized by a very bright emi
 ssion in HI Ly-alpha visible in the UV images of Metis up to 8 solar radii
 . This work is a follow-up study of two out of the six events analyzed by 
 Russano et al. 2024 (A&amp\;A\, 683\, A191)\, aimed at investigating the e
 volution of these two almost co-temporal CMEs but originating in such dist
 inct source regions. To that end\, we extensively inspect data sets from n
 umerous remote-sensing instruments observing the Sun in several spatial an
 d spectral regimes. We characterize several aspects of these CMEs\, includ
 ing their three-dimensional properties\, kinematics\, mass\, and temporal 
 evolution of those quantities. Results of this work point to notable diffe
 rences between these two events showing significant UV emission in the cor
 ona. Co-authors: H. Cremades\, F. A. Iglesias\, L. Teriaca\, R. Aznar Cuad
 rado\, F. M. López\, L. Di Lorenzo\, M. Temmer\, M. Romoli\, D. Spadaro\,
  and the Metis Team\nSpeaker: Yara De Leo
LAST-MODIFIED:20250306T140833Z
LOCATION:https://zoom.us/j/165498165
ORGANIZER;CN=Shahin Jafarzadeh:mailto:
SUMMARY:ESPOS: ESPOS: Two Distinct Eruptive Events Observed by Metis on Oct
 ober 28\, 2021 (Yara de Leo)
URL;VALUE=URI:https://www.mps.mpg.de/events/41141/2169
END:VEVENT
END:VCALENDAR