论文标题
重复FRB的几何形状和环境
The geometry and environment of repeating FRBs
论文作者
论文摘要
我们提出了一个几何解释，以定期和非疾病重复的快速无线电爆发（FRB）在中子之星（NS） - 组合系统下。我们建议一个恒定的关键二进制分离，$ r _ {\ rm c} $，其中NS和伴侣之间的相互作用可以触发FRB突发。对于具有最小和最大二进制分离的椭圆轨道，$ r _ {\ rm min} $和$ r _ {\ rm max} $，如果$ r _ {\ rm min} <rm min} <rm c} {\ rm c} {\ rm c} {\ rm c} {\ rm c} <rm max =但是，如果$ r _ {\ rm max} <r _ {\ rm c} $，则轨道运动的调制将由于持续的互动而无法工作，并且这种重复的FRB应该是非属性的。我们根据FRB 180916.J0158+65和FRB 121102在此几何框架下测试相关的NS兼职二进制方案。发现Pulsar-asteroid皮带冲击模型更适合解释这两个FRB，因为该模型与不同的伴侣（例如，巨大的恒星和黑洞）兼容。最后，我们指出，FRB 121102样品是可以揭示恒星形成区域的进化的潜在对象。
We propose a geometrical explanation for periodically and nonperiodically repeating fast radio bursts (FRBs) under neutron star (NS)-companion systems. We suggest a constant critical binary separation, $r_{\rm c}$, within which the interaction between the NS and companion can trigger FRB bursts. For an elliptic orbit with the minimum and maximum binary separations, $r_{\rm min}$ and $r_{\rm max}$, a periodically repeating FRB with an active period could be reproduced if $r_{\rm min}<r_{\rm c}<r_{\rm max}$. However, if $r_{\rm max}<r_{\rm c}$, the modulation of orbital motion will not work due to persistent interaction, and this kind of repeating FRBs should be nonperiodic. We test relevant NS-companion binary scenarios on the basis of FRB 180916.J0158+65 and FRB 121102 under this geometrical frame. It is found that the pulsar-asteroid belt impact model is more suitable to explain these two FRBs since this model is compatible with different companions (e.g., massive stars and black holes). At last, we point out that FRB 121102-like samples are potential objects which can reveal the evolution of star-forming region.
