Image Details
Caption: Figure 6.
Zs–M plots within the framework of the power-law and square-root exponential models of ﹩f({ \mathcal R },{{ \mathcal L }}_{m})﹩ gravity. The solid black lines denote GR, while the colored curves illustrate different values of the coupling parameters σ and γ.
© 2026. The Author(s). Published by the American Astronomical Society.