Fig. 16
Spin period evolution of GRO J1008−57 since its discovery. Black: historic data taken from Stollberg et al. (1993), Shrader et al. (1999), and Coe et al. (2007). Red: results of this work. The latest period measurement was taken during the “giant” 2012 outburst. To guide the eye, the dashed line shows a spin-down of 2 × 10-10 s s-1.
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