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Probing the Origin of the Kilonova Candidate GRB 230307A: Analysis of Host Galaxy and Offset

  • Authors: Clecio R. Bom, Davi C. Rodrigues, Arianna Cortesi, Amanda E. Araujo-Carvalho, Daniel Ruschel-Dutra, Giuliano Iorio, Luidhy Santana-Silva, Charles D. Kilpatrick, Fabricio Ferrari, Luis Lomelí-Núñez, Thomas Harvey, Duncan Austin, Christopher J. Conselice, Nathan Adams, Roberto Cid Fernandes

Clecio R. Bom et al 2026 The Astrophysical Journal Letters 1001 .

  • Provider: AAS Journals

Caption: Figure 4.

Left: marginalized 2D and 1D sections of the posterior distribution for the fitted parameters. In the 2D regions, the contours indicate the 1σ and 2σ credible regions, and the black circle marks the mode of each marginalized case. Right: the best-fit (MAP) rotation curve with an NFW dark matter halo (﹩{\delta }_{\star }=1.10,\,{\rm{\Delta }}i=0.01,\,\mathrm{log}c=0.75,\,\mathrm{log}({r}_{200}/\,\rm{kpc}\,)=2.64﹩).

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