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SUMMARY:Contributed talk: Identification of inertial normal modes in the s
 olar convection zone - Santiago Triana (Royal Observatory of Belgium)
DTSTART:20221201T111500Z
DTEND:20221201T114500Z
UID:TALK192131@talks.cam.ac.uk
DESCRIPTION:The observation of global acoustic waves (p modes) in the Sun 
 has been key to unveiling its internal structure and dynamics. A different
  kind of waves\, known as sectoral Rossby modes\, have been observed and i
 dentified in recent years\, which potentially opens the door to probing in
 ternal processes that are inaccessible through p-mode helioseismology. Yet
  another set of waves\, appearing as retrograde-propagating\, equatorially
  antisymmetric vorticity waves\, has also been observed very recently but 
 their identification remained elusive. Here\, through a numerical model im
 plemented as an eigenvalue problem\, we provide evidence supporting the id
 entification of those waves as a class of inertial eigenmodes\, distinct f
 rom the Rossby-mode class\, with radial velocities comparable to the horiz
 ontal ones deep in the convective zone but still small compared to the hor
 izontal velocities toward the surface. We also suggest that the signature 
 of tesseral-like Rossby modes might be present in recent observational dat
 a.\nCo-authors: Gustavo Guerrero\, Ankit Barik and J&eacute\;r&eacute\;my 
 Rekier.
LOCATION:Seminar Room 1\, Newton Institute
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