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The Optical Afterglow of GW170817 at One Year Post-merger

  • Authors: G. P. Lamb, J. D. Lyman, A. J. Levan, N. R. Tanvir, T. Kangas, A. S. Fruchter, B. Gompertz, J. Hjorth, I. Mandel, S. R. Oates, D. Steeghs, and K. Wiersema

2019 The Astrophysical Journal Letters 870 L15.

  • Provider: AAS Journals

Caption: Figure 1.

Very late-time HST imaging of GW170817. Images are 5 arcsec per side and the filter and rest-frame days since GW170817 are indicated in each sub-figure. An isophotal elliptical model of the smooth galaxy light has been subtracted from each figure (see the text) and the images have been Gaussian-smoothed to aid the eye. Dashed circles, centered on the location of GW170817, from alignment with earlier HST epochs, are 0.″25 radius. North is up and east is left.

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