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Detection of Oscillations in a Type I X-Ray Burst of 4U 0614+091 with SVOM/ECLAIRs

  • Authors: Sébastien Le Stum, Floriane Cangemi, Alexis Coleiro, Sébastien Guillot, Jérôme Chenevez, Philippe Bacon, Nicolas Bellemont, Laurent Bouchet, Tristan Bouchet, Cécile Cavet, Bertrand Cordier, Antoine Foisseau, Olivier Godet, Andrea Goldwurm, Xuhui Han, Cyril Lachaud, Zhaosheng Li, Huali Li, Yulei Qiu, Jérôme Rodriguez, Wenjun Tan, Lian Tao, Lauryne Verwaerde, Chenwei Wang, Jing Wang, Jianyan Wei, Chao Wu, Wenjin Xie, Liping Xin, Shaolin Xiong, Shuangnan Zhang, Shijie Zheng

Sébastien Le Stum et al 2026 The Astrophysical Journal Letters 997 .

  • Provider: AAS Journals

Caption: Figure 4.

Left: significance contours in the ﹩\bar{\nu }﹩–﹩\dot{\nu }﹩ plane for the time window yielding the most significant signal [T0+11 s, T0+62 s]. Significance levels are given as a color gradient. Overlaid in red are the contours of a two-dimensional Gaussian fitted around the peak. The best-fit parameters, ﹩\bar{\nu }=413.674﹩ Hz and ﹩\dot{\nu }=-4.7\times 1{0}^{-3}﹩ Hz s−1, are used to fold the lightcurve in this interval. Right: folded burst profile using the fitted parameters over the selected time window, in black. The best-fit sinusoidal model to the profile is shown in red.

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