Fig. 1: Glitch positions and amplitudes.
From: Evidence of structural discontinuities in the inner core of red-giant stars

Histograms showing the distributions of the dimensionless glitch position (\({x}^{*}={\widetilde{\omega }}_{g}^{*}/{\omega }_{g}\); a) and dimensionless amplitude (A; b) for the subsample of stars exhibiting glitch signatures. The blue shaded regions indicate the ranges for the corresponding parameters in our sequences of models (see Stellar models description subsection). The latter are also shown, as a function of the core-helium mass fraction (Hec) in c, d. The vertical orange line in b indicates the lowest glitch amplitude that was detected for this sample of stars. Source data are provided as a Source Data file.