论文标题
磁铁作为伽马射线爆发的中央发动机：偶极子辐射的Quasi Umivers Jet，事件速率和X射线光度函数
Magnetar as Central Engine of Gamma-Ray Bursts: Quasi-Universal Jet, Event Rate and X-ray Luminosity Function of Dipole Radiations
论文作者
论文摘要
伽马射线爆发（GRB）的早期浅付费X射线余辉可能归因于新生磁铁的偶极辐射。假设由磁铁提供动力的GRB喷气机是准全面的，我们发现可以将喷气结构作为均匀的喷气机，其发光度为$ \ log l _ {\ rm j}/{\ rm j}/{\ rm erg \ s^{ - 1}}}} $θ_ {\ rm j} = 2.10 _ { - 1.28}^{+1.90} $（50 \％的置信度），由power-law decay组件围绕，其索引为$ { - 4.00^{+0.27} _ {+0.27} _ { - 0.37}} $（1 $ = $）。推断的本地GRB费率为$ρ= 9.6 $ gpc $^{ - 3} $ yr $^{ - 1} $，通过将典型的grbs和ll-grb作为相同的总体包含。典型的视角为$ 3.3^{o} $，对于ll-grbs而言，可能是$ 20^{o} \ sim30^{o} $。偶极辐射风的X射线光度函数可以通过带有指数的破碎幂律函数$β_1= 0.78^{+0.16} _ { - 0.15} $和$β_2> 1.6 $在$β_2> 1.6 $损坏的$β_1= 0.78^{+0.16} _ {+0.16} _ { s^{ - 1}} = 48.51^{+0.53} _ { - 0.65} $。如果是这样，风流是准直并同轴与GRB喷射的，我们发现风结构与Grb喷气机相似，即$ \ log l _ {\ rm c，w}/w}/w}/{\ rm erg \ s^{ - 1}}}} C，W} = {2.65^{O}} _ { - 1.19^{o}}^{+0.1.73^{O}} $和$ K _ {\ rm W} = 4.57^{+1.57^{+1.21} {+1.21} _ { - 0.75} $。在这种喷射风系统中的视角效应可能导致观察到的及时伽马射线光度和X射线光度之间观察到的相关性。还提供了与船上的X射线仪器进行的调查，还提出了{\ em Einstein \ probe}在射流和风发射的软X射线带中的任务。
Early shallow-decaying X-ray afterglows of gamma-ray bursts (GRBs) may be attributed to the dipole radiations of newly-born magnetars. Assuming that the GRB jets powered by magnetars are quasi-universal, we find that the jet structure can be parameterized as a uniform jet with a luminosity of $\log L_{\rm j}/{\rm erg\ s^{-1}}=52.68^{+0.76}_{-0.33}$ (1$σ$) and an opening angle $θ_{\rm j}=2.10_{-1.28}^{+1.90}$ (50\% confidence level), surrounding by a power-law decay component with an index of ${-4.00^{+0.27}_{-0.37}}$ (1$σ$). The inferred local GRB rate is $ρ=9.6$ Gpc$^{-3}$ yr$^{-1}$ by including both the typical GRBs and LL-GRBs as the same population. The typical viewing angle is $3.3^{o}$, and may be $20^{o}\sim30^{o}$ for LL-GRBs. The X-ray luminosity function of the dipole radiation wind can be empirically described by a broken power-law function with indices $β_1=0.78^{+0.16}_{-0.15}$ and $β_2>1.6$ broken at $\log L_{b, w}/{\rm erg\ s^{-1}}=48.51^{+0.53}_{-0.65}$. In case of that the wind outflow is collimated and co-axial with the GRB jet, we find that the wind structure is similar to the GRB jet, i.e., $\log L_{\rm c, w}/{\rm erg\ s^{-1}}=48.38^{+0.30}_{-0.48}$, $θ_{\rm c, w}={2.65^{o}}_{-1.19^{o}}^{+0.1.73^{o}}$, and $k_{\rm w}=4.57^{+1.21}_{-0.75}$. The observed correlation between the prompt gamma-ray luminosity and X-ray luminosity of the wind may be resulted from the viewing angle effect in such a jet-wind system. Discussion on survey with the X-ray instruments on board the {\em Einstein\ Probe} mission in the soft X-ray band for the jet and wind emission is also presented.
