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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 2.

Top: surface brightness profile obtained extracting the galaxy light in elliptical bins, following the galaxy axis ratio, of increasing radius, shown as blue circles with error bars. The black dashed line represents the 1D fit of these data, assuming an exponential profile. The red line shows the output of the 2D GALFIT for an exponential profile, which leads to a larger disk scale length (h) than the previous case. Bottom: GALFIT fit. Left: image; middle: model; right: residuals.

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