跨巡天十年：行动号召
The Cross-Survey Decade: A Call to Action
中文总结 AI 辅助
本文呼吁构建跨巡天科学基础设施，围绕四大支柱推进，以实现三个旗舰巡天项目联合数据的科学价值，需多方协作且当下是行动的关键时机。
中文摘要 AI 辅助
到2027年，三个旗舰级宽场巡天项目将从地面和空间同时运行，观测重叠天区，代表着超过60亿美元的美国和欧洲公共投资。它们将共同产生覆盖数千平方度的重叠拍字节级数据集。这是一类不同的挑战：观测不再是瓶颈，实现它们的联合科学回报现在取决于共享计算基础设施和协调。数十年的社区研究表明，将这些数据集结合起来不仅能提高精度，对于从弱引力透镜到暂现源发现再到银道面天文学的科学研究，联合处理和分析能够解锁任何单一巡天项目无法提供的能力。然而，所需的基础设施——联合像素级处理、交叉校准与验证、互操作数据访问，以及构建和维护这些基础设施的人员——超出了任何单一任务或机构的职责范围。我们发出跨巡天科学基础设施的行动号召，该基础设施围绕四大支柱构建：（1）联合像素级处理与验证；（2）面向科学基础模型的AI就绪数据基底；（3）跨巡天的标准化、互操作数据访问，使天体物理发现的参与民主化；（4）专职人员与职业发展路径。我们为政策制定者、机构、天文台、大学、研究界和慈善机构概述了具体步骤，并认为现在是采取行动的时刻，此时基础技术选择仍可协调，成本仅为日后协调的一小部分。
英文摘要
By 2027, three flagship wide-field surveys will be operating simultaneously from ground and space, observing overlapping sky and representing more than $6 billion in US and European public investment. Together they will produce overlapping petabyte-scale datasets across thousands of square degrees. This is a different class of challenge: the observations are no longer the bottleneck; realizing their joint scientific return now depends on shared computational infrastructure and coordination. Decades of community studies show that combining these datasets does more than improve precision. For science ranging from weak lensing to transient discovery and Galactic-plane astronomy, joint processing and analysis can unlock capabilities no single survey provides alone. Yet the required infrastructure -- joint pixel-level processing, cross-calibration and validation, interoperable data access, and the people to build and sustain it -- falls outside any single mission or institution's mandate. We issue a call to action for cross-survey science infrastructure, built around four pillars: (1) joint pixel-level processing and validation; (2) an AI-ready data substrate for scientific foundation models; (3) standardized, interoperable data access across surveys, democratizing participation in astrophysical discovery; and (4) dedicated personnel and career pathways. We outline concrete steps for policymakers, agencies, observatories, universities, the research community, and philanthropy, and argue that the moment to act is now, while foundational technical choices can still be aligned at a fraction of the cost of reconciling them later.
