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Table 1.

Classes of solar inertial modes studied in this paper.

Mode names used here Other names Observed Propagation direction North-south symmetry Linear models
on the Sun? in Carrington frame of radial vorticity
n = 0 equatorial Rossby ... yes (1–4) retrograde symmetric (1), (7–11)
high-latitude inertial ... yes (5) retrograde both symmetries (5), (9)
HFR mixed modes yes (6) retrograde anti-symmetric (11–13)

n = 1 equatorial Rossby mixed modes maybe (4) retrograde symmetric (9), (11–12)
prograde columnar thermal Rossby; Busse columns not yet prograde anti-symmetric (9), (14–18)

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