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VERSION:2.0
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CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260818T114900Z
UID:https://www.mps.mpg.de/events/16081/7840830
DTSTART:20181115T100000Z
DTEND:20181115T110000Z
CLASS:PUBLIC
CREATED:20181112T095812Z
DESCRIPTION:Are solar MHD waveguides symmetric? It is convenient to assume 
 that they are. The solar physics community is familiar with the traditiona
 l notion of sausage and kink waves\, which propagate along waveguides in t
 he solar atmosphere that we assume are symmetric. In this talk\, we drop t
 his assumption and motivate the study of MHD wave propagation in asymmetri
 c waveguides from theoretical and observational viewpoints. We discuss the
  implications that asymmetric waveguides have for mode identification\, hi
 ghlighting the observational ambiguity between waves in symmetric and asym
 metric waveguides\, which becomes a crucial consideration when implementin
 g magneto-seismology diagnostics. We present a novel technique for solar m
 agneto-seismology that utilises the observed asymmetry of MHD waves to dia
 gnose background parameters of the solar atmosphere that are difficult to 
 measure using traditional methods. We present a preliminary application of
  this technique to chromospheric fibrils as a proof-of-concept and discuss
  the potential further application to prominences\, elongated magnetic bri
 ght points\, and sunspot light walls.\nVortragende(r): Matthew Allcock
LAST-MODIFIED:20260220T073544Z
LOCATION:Plasma Dynamics Group\, University of Sheffield (broadcasted at MP
 S)\, Raum: Auditorium
ORGANIZER;CN=Andreas Lagg:mailto:
SUMMARY:ESPOS: ESP Online Seminar: Asymmetric Solar Waveguides: Theory and 
 Observations (M. Allcock)
URL;VALUE=URI:https://www.mps.mpg.de/events/16081/7840830
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