论文标题
Trapum在NGC 1851中使用Meerkat发现了13个新脉冲星
TRAPUM discovery of thirteen new pulsars in NGC 1851 using MeerKAT
论文作者
论文摘要
我们使用Meerkat射程望远镜在Trapum大型调查项目中报告了在Globular群集NGC 1851中发现13个新脉冲星的发现。这些发现由六个孤立的毫秒脉冲星（MSP）和七个二元脉冲星组成，其中6个是MSP，一个是轻微回收的。对于所有脉冲星，我们介绍适用的基本运动学，天体和轨道参数，以及它们的偏振特性，当它们是可测量的时。两个二进制MSP（PSR J0514-4002D和PSR J0514-4002E）的宽度且极其偏心（E> 0.7）轨道，分别具有沉重的白色矮人和中子星，并作为他们的同伴。有了这些发现，NGC 1851现在与M28并列为已知脉冲星数量第三大的群集（14）。它的脉冲星人口与M28，Terzan 5和其他具有可比结构参数的群集的相似性。新发现的脉冲星均位于NGC 1851的最内向区域，可能会启用有关群集结构和动力学的详细研究。
We report the discovery of 13 new pulsars in the globular cluster NGC 1851 by the TRAPUM Large Survey Project using the MeerKAT radio telescope. The discoveries consist of six isolated millisecond pulsars (MSPs) and seven binary pulsars, of which six are MSPs and one is mildly recycled. For all the pulsars, we present the basic kinematic, astrometric, and orbital parameters, where applicable, as well as their polarimetric properties, when these are measurable. Two of the binary MSPs (PSR J0514-4002D and PSR J0514-4002E) are in wide and extremely eccentric (e > 0.7) orbits with a heavy white dwarf and a neutron star as their companion, respectively. With these discoveries, NGC 1851 is now tied with M28 as the cluster with the third largest number of known pulsars (14). Its pulsar population shows remarkable similarities with that of M28, Terzan 5 and other clusters with comparable structural parameters. The newly-found pulsars are all located in the innermost regions of NGC 1851 and will likely enable, among other things, detailed studies of the cluster structure and dynamics.
