论文标题
用高精度的天文学探测磁场地层通道：最快旋转磁铁Swift J1818.0-1607的VLBA天文测量的进度
Probing magnetar formation channels with high-precision astrometry: The progress of VLBA astrometry of the fastest-spinning magnetar Swift J1818.0-1607
论文作者
论文摘要
具有最高磁力强度的磁铁是产生快速无线电爆发的主要候选者之一。已经提出了几种理论用于磁铁的形成机理，但尚未完全测试。由于不同的磁性地层理论期望独特的磁性空间速度分布，因此，银河磁体的高精度天文仪可以用作地层理论的探针。另外，磁性天文标准可以完善对银河磁体分布的理解。可以将此分布与螺旋星系中定位的快速无线电爆发（FRB）进行比较，以测试FRB和磁铁之间的联系。 Swift J1818.0-1607是迄今为止最快的旋转磁铁，第五次发现的无线电磁场。在一场正在进行的天文程活动中，我们使用非常长的基线阵列观察到Swift J1818.0-1607一年，并确定了精确的适当运动以及磁力的暂定差异。
Boasting supreme magnetic strengths, magnetars are among the prime candidates to generate fast radio bursts. Several theories have been proposed for the formation mechanism of magnetars, but have not yet been fully tested. As different magnetar formation theories expect distinct magnetar space velocity distributions, high-precision astrometry of Galactic magnetars can serve as a probe for the formation theories. In addition, magnetar astrometry can refine the understanding of the distribution of Galactic magnetars. This distribution can be compared against fast radio bursts (FRBs) localized in spiral galaxies, in order to test the link between FRBs and magnetars. Swift J1818.0-1607 is the hitherto fastest-spinning magnetar and the fifth discovered radio magnetar. In an ongoing astrometric campaign, we have observed Swift J1818.0-1607 for one year using the Very Long Baseline Array, and have determined a precise proper motion as well as a tentative parallax for the magnetar.
