论文标题
X射线高原以$γ$ -Ray的爆发由结构化喷气机解释
X-ray plateaus in $γ$-ray bursts explained by structured jets
论文作者
论文摘要
X射线望远镜（XRT，0.3-10 KEV）对$γ$ ray爆发（GRB）的随访，尼尔·盖尔尔斯·斯威夫特（Neil Gehrels）迅速天文台的后续速度导致X射线排放的浅衰减阶段（所谓的高原）在GRB的大部分中发现了X射线发射的浅衰减阶段。这种意外的时间行为不符合标准的GRB余辉期望。因此，在过去的几年中，许多模型都出现了，这些模型将能量注入到外部冲击中，需要GRB的中央发动机的持久活动。我们讨论了一个新的替代，全面的模型：高原阶段起源于高纬度发射（即，在射流表现出散装运动和强度结构时，在弯曲表面的迅速发射后，关闭了弯曲表面的迅速发射后，从较大的角度观察到的辐射。该模型使我们不仅能够再现X射线光曲线的时间行为，还可以重现关节光学到X射线发射的多样性。
The follow-up of $γ$-ray bursts (GRBs) by the X-ray telescope (XRT, 0.3-10 keV) on board the Neil Gehrels Swift Observatory led to the discovery of a shallow decay phase (the so-called plateau) of the X-ray emission in a good fraction of GRBs. This unexpected temporal behaviour does not fit the standard GRB afterglow expectation. Thus, in the last years, many models emerged, that invoke energy injection into the external shock, requiring long-lasting activity of the central engine of GRBs. We discuss a new alternative, comprehensive model: the plateau phase originates from the high latitude emission (i.e., the radiation observed from larger angles relative to the line of sight, after the prompt emission from a curved surface is switched off) when the jet exhibits bulk motion and intensity structure. This model enables us to reproduce not only the temporal behaviour of the X-ray light curves, but also the diversity of joint optical-to-X-ray emission.
