PolPy：一种使用通用数据格式标准的X射线/伽马射线偏振测量通用工具
PolPy: A universal tool for X-ray/gamma-ray polarimetry using common data format standards
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中文总结 AI 辅助
PolPy是一款基于3ML框架的通用偏振测量工具，通过统一数据格式等标准，可准确恢复偏振参数，多仪器联合拟合能提升约束能力，为高能天体物理暂现源偏振分析提供支持。
中文摘要 AI 辅助
近年来，X射线/伽马射线偏振测量领域发展迅速，但缺乏标准化分析框架阻碍了跨仪器比较和多任务联合研究。为解决这一问题，本文提出PolPy，一种专为高能天体物理暂现源偏振测量设计的通用工具。PolPy作为多任务最大似然（3ML）框架的插件构建，引入了标准化数据与响应格式、基于国际天文学联合会（IAU）规范定义偏振角的通用参考框架，以及稳健的基于似然的模板匹配算法。本文简要描述了这些标准，并展示了使用模拟伽马射线暴（GRB）注入对软件进行验证的测试与结果，测试覆盖POLAR和Daksha两个不同任务质量模型。验证测试表明，PolPy可准确恢复注入的偏振角和偏振度，无系统偏差；此外，研究显示，与单仪器分析相比，对多个探测器和仪器进行同时联合拟合可显著提升参数约束能力。通过统一数据格式与方法，PolPy为当前及未来的高能偏振计提供可靠的联合偏振分析支持。
英文摘要
X-ray/gamma-ray polarimetry has been a rapidly developing field in recent years. However, the lack of standardized analysis frameworks has hindered cross-instrument comparisons and joint multi-mission studies. To address this, we present PolPy, a universal tool designed for polarimetry of high-energy astrophysical transients. Built as a plugin for the Multi-Mission Maximum Likelihood (3ML) framework, PolPy introduces standardized data and response formats, common reference frames based on IAU conventions for defining polarization angles, and a robust likelihood-based template-matching algorithm. The article briefly describes these standards and presents tests and results performed to validate the software using simulated gamma-ray burst (GRB) injections across two different mission mass models: POLAR and Daksha. Our verification tests demonstrate that PolPy accurately recovers the injected polarization angles and fractions without systematic bias. Furthermore, we show that performing simultaneous joint fits across multiple detectors and instruments can significantly improve parameter constraints compared to single-instrument analyses. By unifying data formats and methodology, PolPy enables reliable joint polarimetric analysis for current and future high-energy polarimeters.
