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Black-hole Shadows and Null Geodesics in Hamaus–Sutter–Wandelt Void Spacetimes with a Quintessential Field: Observational Signatures from EHT Data of M87∗ and Sgr A∗

  • Authors: A. Errehymy, S. Hansraj, C. Hansraj

A. Errehymy et al 2025 The Astrophysical Journal 995 .

  • Provider: AAS Journals

Caption: Figure 5.

The phase portrait of ﹩\dot{r}﹩ versus r for different combinations of δc, γ, and ρs in HSW void spacetimes with a quintessential field for the regular black hole is shown, with the red dot indicating the location of the saddle (critical) point.

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