论文标题
部分可观测时空混沌系统的无模型预测
Constrains on the physics of the prompt emission from a distant and energetic gamma-ray burst GRB 220101A
论文作者
论文摘要
$ \rmγ$ ray爆发（GRB）的排放区域受到限制。耗散站点大小的不确定性跨越4个数量级（$ \ rm 10^{12} -10^{17} $ cm），具体取决于GRB喷射的未知能量组成。从软X射线到高能（$ \ rm \ sim $ 1 GEV）的联合多波段分析是最能量和远处的GRB 220101A（Z = 4.618）的联合分析，使我们可以在提示和早期的余潮发射之间进行准确的区分。 The enormous amount of energy released by GRB 220101A ($\rm E_{iso} \approx 3 \times10^{54}$ erg) and the spectral cutoff at $\rm E_{cutoff} = 85_{-26}^{+16}$ MeV observed in the prompt emission spectrum constrains the parameter space of GRB dissipation site.我们在提示排放站点上放置了严格的约束，需要$ \ rm 700 <γ_0<1160 $和$ \ rmr_γ\ sim 4.5 \ times 10^{13} $ cm。我们的发现进一步突出了在电子合成的方案中找到简单的自我一致图片的困难，而是有利于质子合成的模型，该模型也与观察到的光谱形状一致。 GRB的时间变异性以及准确的高能观测值（MEV-GEV）的更深入测量将揭示及时发射的性质。
The emission region of $\rm γ$-ray bursts (GRBs) is poorly constrained. The uncertainty on the size of the dissipation site spans over 4 orders of magnitude ($\rm 10^{12}-10^{17}$ cm) depending on the unknown energy composition of the GRB jets. The joint multi-band analysis from soft X-rays to high energies (up to $\rm \sim$ 1 GeV) of one of the most energetic and distant GRB 220101A (z = 4.618) allows us for an accurate distinction between prompt and early afterglow emissions. The enormous amount of energy released by GRB 220101A ($\rm E_{iso} \approx 3 \times10^{54}$ erg) and the spectral cutoff at $\rm E_{cutoff} = 85_{-26}^{+16}$ MeV observed in the prompt emission spectrum constrains the parameter space of GRB dissipation site. We put stringent constraints on the prompt emission site, requiring $\rm 700<Γ_0<1160 $ and $\rm R_γ\sim 4.5 \times 10^{13}$ cm. Our findings further highlights the difficulty of finding a simple self consistent picture in the electron-synchrotron scenario, favoring instead a proton-synchrotron model, which is also consistent with the observed spectral shape. Deeper measurements of the time variability of GRBs together with accurate high-energy observations (MeV-GeV) would unveil the nature of the prompt emission.
