论文标题
在多脉冲短伽玛射线爆发170206a中检测及时快速变化的热量组件
Detection of Prompt Fast-Variable Thermal Component in Multi-Pulse Short Gamma-Ray Burst 170206A
论文作者
论文摘要
我们报告了在短伽玛射线爆发170206a中检测强的热成分，其光曲线中有三个强脉冲，该热曲线的范围在该热曲线中表现出与伴随非热成分相同的快速变异性。非热分量中时间分辨的低能光子指数的值在-0.79和-0.16之间，其中大多数比同步基因排放过程中的-2/3较难。此外，我们发现了热成分与非热组件之间的共同演变，$ e _ {\ rm P，cpl} \ propto kt _ {\ rm bb}^{0.95 \ pm0.28} $ bb}^{0.67 \ pm0.18} $，其中$ e _ {\ rm p，cpl} $和$ f _ {\ rm cpl} $是峰值光子的能量和非热功能的峰值光子和相应的通量，以及$ kt _ {\ rm bb} $和$ f _ {bb} $和$ f _ {组件分别。最后，我们提出，光球热发射和热光子的组合可能是GRB 170206a的观察特征。
We report the detection of a strong thermal component in the short Gamma-Ray Burst 170206A with three intense pulses in its light curves, throughout which the fluxes of this thermal component exhibit fast temporal variability same as that of the accompanying non-thermal component. The values of the time-resolved low-energy photon index in the non-thermal component are between about -0.79 and -0.16, most of which are harder than -2/3 excepted in the synchrotron emission process. In addition, we found a common evolution between the thermal component and the non-thermal component, $E_{\rm p,CPL} \propto kT_{\rm BB}^{0.95\pm0.28}$, and $F_{\rm CPL} \propto F_{\rm BB}^{0.67\pm0.18}$, where $E_{\rm p,CPL}$ and $F_{\rm CPL}$ are the peak photon energy and corresponding flux of the non-thermal component, and $ kT_{\rm BB}$ and $F_{BB}$ are the temperature and corresponding flux of the thermal component, respectively. Finally, we proposed that the photospheric thermal emission and the Comptonization of thermal photons may be responsible for the observational features of GRB 170206A.
