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First Light of Neutron Star Mergers: Off-axis Cocoon Cooling X-Ray Emission from Short Gamma-Ray Burst Jets

  • Authors: Jian-He Zheng, Wenbin Lu

Jian-He Zheng and Wenbin Lu 2026 The Astrophysical Journal Letters 1010 .

  • Provider: AAS Journals

Caption: Figure 6.

Temporal evolution of the peak energy for different models. Colors denote different models, as in Figure 2. The solid and dashed–dotted curves correspond to viewing angles of θv = 10∘ and 20∘, respectively. The black dashed line indicates the power-law decay ﹩{E}_{{\rm{peak}}}\propto {t}_{{\rm{obs}}}^{-0.6}﹩.

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