Fig. 25

Mean profile M(ν) of 76 equidistant (in period) dipole modes whose central frequencies are defined by Fig. 20, shown for a 1.2 μHz bandwidth (Eq. (13)). The triplet splitting of this profile, even when contaminated by the background noise and many overlapping neighbors, is nevertheless directly measured on the modes themselves, at 209.5 ± 2 nHz.
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