利用TRON挖掘时间轴。I. 通过MeerKAT干涉成像在Omega Centauri、Terzan 5和47 Tucanae中探测到的毫秒脉冲星
Mining the time axis with TRON. I. Millisecond pulsars in Omega Centauri, Terzan 5 and 47 Tucanae detected through MeerKAT interferometric imaging
AI总结：
本文提出名为TRON的原型流水线，通过处理MeerKAT档案综合成像数据挖掘中等时标射电暂现源和变源，在三个球状星团中成功探测到多个毫秒脉冲星及候选体并确认其掩食行为。
摘要：
中等时标（几分钟到几小时）射电暂现源是一个相对未被探索的群体。MeerKAT等仪器的宽视场和高瞬时灵敏度为利用图像平面探测技术探索这类源提供了机会。我们旨在系统性地挖掘档案综合成像数据，以搜索常规长跟踪图像综合技术无法探测到的中等时标暂现源和变源。我们部署了一个名为TRON的原型盲暂现源和变源搜索流水线。它处理校准后的可见度数据，构建高时间分辨率图像，在多个时标上搜索变源，并提取探测到的源的光变曲线。作为概念验证，我们将其应用于三个球状星团的MeerKAT观测，这些星团已知存在暂现源或变源。我们在球状星团Omega Centauri中探测到一个先前已知、被怀疑为“黑寡妇”系统的食双星MSP，其光变曲线证实了辐射的掩食性质。我们在球状星团Terzan 5中探测到一个先前已知的“红背”食双星MSP。利用对球状星团47 Tucanae的观测，我们探测到两个已知的毫秒脉冲星（MSPs）和一个先前报告过的MSP候选体，并发现了掩食行为的迹象。
英文摘要：
Medium-timescale (minutes to hours) radio transients are a relatively unexplored population. The wide field-of-view and high instantaneous sensitivity of instruments such as MeerKAT provides an opportunity to probe this class of sources, using image-plane detection techniques. We aim to systematically mine archival synthesis imaging data in order to search for medium-timescale transients and variables that are not detected by conventional long-track image synthesis techniques. We deploy a prototype blind transient and variable search pipeline named TRON. This processes calibrated visibility data, constructs high-time cadence images, performs a search for variability on multiple timescales, and extracts lightcurves for detected sources. As proof of concept, we apply it to three MeerKAT observations of globular clusters, known to host transient or variable sources. We detect a previously known eclipsing MSP suspected to be a `black widow' system, in the globular cluster Omega Centauri, with a light curve confirming the eclipsing nature of the emission. We detect a previously known `red back' eclipsing MSP in the globular cluster Terzan 5. Using observations of the globular cluster 47 Tucanae, we detect two known millisecond pulsars (MSPs), and one previously reported MSP candidate, with hints of eclipsing behaviour.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
