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Constrained Gaussian-process-bridge Prior for Neutron-star Equation-of-state Inference

  • Authors: Tyler Gorda, Oleg Komoltsev, Aleksi Kurkela, Eirik Sunde

Tyler Gorda et al 2026 The Astrophysical Journal 1002 .

  • Provider: AAS Journals

Caption: Figure 4.

The procedure for incorporating the low- and high-density inputs into the construction of the constrained GP bridge. The blue dashed lines correspond to the samples of the fractal EoSs together with their diffused counterparts represented by purple solid lines. The two colored bands correspond to the low- and high-density limits from the chiral-EFT and pQCD EoSs. The fractal EoS is constructed from two endpoints, βL and βH, obtained from the sampled chiral-EFT and pQCD EoSs at the corresponding densities nL = 2 ns and nH = 30 ns. The diffusion is then performed over the broader density range [0.34,  40] ns to ensure a smooth transition of ﹩{c}_{s}^{2}﹩ to both limits.

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