\(\ell = 1\) Rotational Multiplets on a
Frequency
Period
-Échelle Diagram
\(\Omega\)
\(i\)
Phase-folded
frequency
:
\(\nu \mod \Delta\nu\)
\(P \mod \Delta\Pi\)
Frequency
$$\delta P_{\text{rot}, g, \ell=1} \sim - m{\Omega \over 4\pi \nu^2}$$
$$\delta \nu_{\text{rot}, p, \ell=1} \sim m {\Omega \over 2\pi}$$
Figure courtesy of Joel Ong