论文标题
“心虫”星云的奇怪案例
The Curious Case of the "Heartworm" Nebula
论文作者
论文摘要
在UHF和L乐队中的Meerkat无线电干涉仪阵列（0.56--1.68 GHz）中，观察到了G357.2 $ -0.2附近的好奇银河特征。有两个可能相关的特征：新发现的淡淡的心形部分外壳（“心脏”），以及一系列已知但现在更好地成像的狭窄，弯曲的特征（“蠕虫”）内部到心脏的内部。极化的发射表明，许多发射是非热的，并且嵌入了密集的血浆中。蠕虫的细丝似乎是磁性结构，由嵌入的结是颗粒加速度的位点。蠕虫的形态广泛类似于一些已知的脉冲星云（pwne），但没有已知的脉冲星或pwn可以为这种结构提供动力。我们还提出了对该领域的观察。在X射线中没有检测到星云的一部分，但是当前的极限并不排除存在中间旋转光度的脉冲星/PWN的存在。
The curious Galactic features near G357.2$-$0.2 were observed with the MeerKAT radio interferometer array in the UHF and L bands (0.56--1.68 GHz). There are two possibly related features: a newly identified faint heart-shaped partial shell (the "Heart"), and a series of previously known but now much better imaged narrow, curved features (the "Worm") interior to the heart. Polarized emission suggests that much of the emission is nonthermal and is embedded in a dense plasma. The filaments of the worm appear to be magnetic structures powered by embedded knots that are sites of particle acceleration. The morphology of the worm broadly resembles some known pulsar wind nebulae (PWNe) but there is no known pulsar or PWN which could be powering this structure. We also present eROSITA observations of the field; no part of the nebula is detected in X-rays, but the current limits do not preclude the existence of a pulsar/PWN of intermediate spin-down luminosity.
