论文标题
旋转无线电瞬变的长期演变
On the long-term evolution of rotating radio transients
论文作者
论文摘要
对旋转无线电瞬变（RRAT）的长期演变的研究对于了解单个图片中孤立的中子星人群之间的进化连接很重要。 RRAT的X射线照明（一个源除外）尚不清楚。在后备光盘模型中，我们开发了一种方法来估计无X射线信息的RRAT的偶极场强度。我们发现，rrats可以在从$ \ sim 7 \ sim 7 \ sim 10^9 $ g到$ \ sim 6 \ sim 6 \ sim 10^{11} $ g的电线杆上具有偶极子场优势，$ b_0 $，这填补了$ b_0 $ r之间的间隙，中央紧凑型对象（CCOS）（CCOS）和Dim隔离的中子星星（X. X Starts Starts Starts Starts Start（xsate Sater））估算了Iscors（XDINS SARTE）。在我们的模型中，大多数rrats在$（\ sim 2-6）\ times 10^5 $ yr时都在发展，比其特征年龄小得多，因此，可以检测到Erosita All Skooky All Skooky Survey的相对较附近RRAT的冷却仪式。许多rrats位于脉冲星死亡谷的上部边界上方，并从偶极 - 扭转公式推断出田间，而它们并未显示出强，连续的无线电脉冲。在我们的模型中估计的$ b_0 $值，将所有rrats放入死亡谷或死亡线以下。我们暂时提出，rrats可能是其各个死亡点以下的来源，而圆盘场相互作用偶尔会通过磁极通过磁极线的通量来点燃它们的短无线电爆发。我们还讨论了CCO，RRAT和XDIN之间的进化联系。
Investigation of the long-term evolution of rotating radio transients (RRATs) is important to understand the evolutionary connections between the isolated neutron star populations in a single picture. The X-ray luminosities of RRATs (except one source) are not known. In the fallback disc model, we have developed a method to estimate the dipole field strengths of RRATs without X-ray information. We have found that RRATs could have dipole field strengths, $B_0$, at the poles ranging from $\sim 7 \times 10^9$ G to $\sim 6 \times 10^{11}$ G which fill the gap between the $B_0$ ranges of central compact objects (CCOs) and dim isolated neutron stars (XDINs) estimated in the same model. In our model, most of RRATs are evolving at ages $(\sim 2 - 6) \times 10^5$ yr, much smaller than their characteristic ages, such that, cooling luminosities of a large fraction of relatively nearby RRATs could be detected by the eROSITA all-sky survey. Many RRATs are located above the upper border of the pulsar death valley with the fields inferred from the dipole-torque formula, while they do not show strong, continuous radio pulses. The $B_0$ values estimated in our model, place all RRATs either into the death valley or below the death line. We have tentatively proposed that RRATs could be the sources below their individual death points, and their short radio bursts could be ignited by the disc-field interaction occasionally enhancing the flux of open field lines through the magnetic poles. We have also discussed the evolutionary links between CCOs, RRATs and XDINs.
