AI 中文总结
2023年5月中旬启动的GCGPS项目，利用升级后的uGMRT在球状星团发现多颗新毫秒脉冲星。第一阶段发现七颗，实现对星团色散量精确测定。介绍项目第一阶段设计实施、成果，以及第二阶段观测策略和进展。
AI 中文摘要
球状星团GMRT脉冲星搜索（GCGPS）项目于2023年5月中旬启动，是使用升级后的巨型米波射电望远镜（uGMRT）进行的最成功的脉冲星调查之一，发现了几颗新的毫秒脉冲星（MSP）。最近结束的第一阶段调查在四个球状星团中发现了七颗MSP，此前这些星团均无已知脉冲星。这首次实现了对各星团色散量（DM）的精确测定。持续的定时跟踪显示，七颗MSP中三颗为确认的双星，两颗为孤立星。本文总结了GCGPS项目第一阶段的设计与实施，展示了迄今取得的关键科学成果，并概述了最近启动的第二阶段观测的策略和进展。
英文摘要
The Globular Clusters GMRT Pulsar Search (GCGPS) project, launched in mid-May 2023, has emerged as one of the most successful pulsar surveys conducted with the upgraded Giant Metrewave Radio Telescope (uGMRT), leading to the discovery of several new millisecond pulsars (MSPs). The recently concluded Phase I of the survey resulted in the discovery of seven MSPs across four globular clusters (GCs), all of which previously had no known pulsars. These discoveries have enabled the precise determination of the dispersion measures (DMs) for the respective clusters for the first time. Consistent timing follow-up revealed that out of the seven MSPs, three are confirmed binaries, while two are isolated. This paper summarises the design and the implementation of Phase I of the GCGPS project, presents the key scientific results obtained so far, and outlines the strategy and progress of the recently initiated Phase II observations.
Comments5 pages and 4 figures; Submitted to URSI Radio Science Letters (RSL)
