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We present eigenfrequencies and eigenfunctions of trapped acoustic-inertialoscillations of thin accretion disks for a Schwarzschild black hole and arapidly rotating Newtonian star (a Maclaurin spheroid). The results are derivedin the formalism of Nowak and Wagoner (1991) with the assumption that theoscillatory motion is parallel to the midplane of the disk. The first fourradial modes for each of five azimuthal modes $m = 0$ through $m = 4$ arepresented. The frequencies and wavefunctions of the lowest modes may beaccurately approximated by the Airy function.

Eigenmodes of trapped horizontal oscillations in accretion disks