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GRB 250706B/C: Insight-HXMT Discovery of a High-luminosity Burst as a Candidate for Fallback-regulated Accretion in the Prompt Emission

  • Authors: Chen-Wei Wang, R. Moradi, Shao-Lin Xiong, Shuang-Nan Zhang, Zheng-Hang Yu, Wen-Jun Tan, Hao-Xuan Guo, Xiao-Bo Li, Cheng-Kui Li, Jia-Cong Liu, Xing-Hao Luo, Yang-Zhao Ren, Yue Wang, Sheng-Lun Xie, Wang-Chen Xue, Xue-Yuan Zao, Peng Zhang, Chao Zheng

Chen-Wei Wang et al 2026 The Astrophysical Journal Letters 1004 .

  • Provider: AAS Journals

Caption: Figure 2.

Pulse distribution diagnostics for GRB 250706B/C. The pulse width (FWHM) distribution, waiting-time distribution, and peak-rate distribution quantify the short-timescale variability of GRB 250706B/C. These histograms show broad scatter in pulse widths and interpeak intervals, and a broad peak-rate distribution, indicating that the prompt variability is dominated by stochastic structure rather than a single preferred timescale or amplitude.

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