标题： 面向真实的太极探测流程：数据解析和高保真空间引力波天线模拟的新挑战 显示英文标题

标题： Towards Realistic Detection Pipelines of Taiji: New Challenges in Data Analysis and High-Fidelity Simulations of Space-Borne Gravitational Wave Antenna

摘要： 太极，一个基于中国的空间引力波探测项目，旨在以前所未有的灵敏度探索毫赫兹引力波宇宙，目标包括银河双星系统、大质量黑洞双星系统、极端质量比的旋近以及随机引力波背景等天体物理和宇宙学源。 这些观测有望为天体物理学、宇宙学和基础物理学提供变革性的见解。 然而，太极的数据分析面临着独特的挑战，这些挑战与地面探测器（如LIGO-Virgo-KAGRA）不同，例如众多信号的重叠、延长的数据持续时间、波形模板更严格的准确性要求、次主导波形复杂性不可忽略、噪声谱表征不完全、非平稳噪声以及各种数据异常。 本文介绍了太极数据挑战的第二轮，这是一系列模拟数据集，旨在作为解决这些关键数据分析问题的共享平台。 当前平台通过全面的无拖曳和姿态控制仿真集成轨道动力学、扩展噪声源、更复杂且重叠的引力波信号、第二代时延干涉测量以及随时间变化的臂长耦合效应等方式，与之前的工作区分开来。 同时发布的开源工具包三角中心（可在https://github.com/TriangleDataCenter获取），提供了自定义模拟信号、噪声及其他仪器效应的能力。 通过进一步迈向实际检测，太极数据挑战II和三角中心共同作为一个新的测试平台，支持太极全球分析和端到端管道的发展，最终弥合观测与科学目标之间的差距。 显示英文摘要

摘要： Taiji, a Chinese space-based gravitational wave detection project, aims to explore the millihertz gravitational wave universe with unprecedented sensitivity, targeting astrophysical and cosmological sources including Galactic binaries, massive black hole binaries, extreme mass-ratio inspirals, and stochastic gravitational wave backgrounds, etc. These observations are expected to provide transformative insights into astrophysics, cosmology, and fundamental physics. However, Taiji's data analysis faces unique challenges distinct from ground-based detectors like LIGO-Virgo-KAGRA, such as the overlap of numerous signals, extended data durations, more rigorous accuracy requirements for the waveform templates, non-negligible subdominant waveform complexities, incompletely characterized noise spectra, non-stationary noises, and various data anomalies. This paper presents the second round of Taiji Data Challenge, a collection of simulation datasets designed as a shared platform for resolving these critical data analysis problems. The current platform distinguishes from previous works by the systematic integration of orbital dynamics based on the full drag-free and attitude control simulation, extended noise sources, more sophisticated and overlapping gravitational wave signals, second-generation time-delay interferometry and the coupling effect of time-varying armlengths, etc. Concurrently released is the open-source toolkit Triangle (available at https://github.com/TriangleDataCenter), which offers the capabilities for customized simulation of signals, noises and other instrumental effects. By taking a step further towards realistic detection, Taiji Data Challenge II and Triangle altogether serve as a new testbed, supporting the development of Taiji's global analysis and end-to-end pipelines, and ultimately bridging the gaps between observation and scientific objectives.