发表机构
Istituto Nazionale di Astrofisica / Osservatorio Astronomico di Brera (INAF/OAB); Università degli Studi di Ferrara（意大利国家天体物理研究所/布雷拉天文台; 费拉拉大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究针对现有X射线望远镜难以快速定位引力波事件电磁对应体的问题，通过光线追迹模拟优化Wolter-I望远镜，提出倾斜镜壳增大视场的设计方案，为相关小型任务提供可行思路。
AI 中文摘要
当前X射线望远镜的视场与角分辨率组合，使其难以快速定位引力波事件的电磁对应体；当LIGO和Virgo实验达到全灵敏度，或爱因斯坦望远镜、宇宙探索者观测站在未来几十年投入运行时，这类对应体的定位将愈发重要。本研究在小型任务框架下，探究何种X射线光学设计可同时具备足够宽的视场，以快速观测引力波探测器限定的天区，以及足够好的角分辨率来定位这些源。我们通过光线追迹模拟，研究如何为此优化Wolter-I望远镜，发现通过将Wolter-I X射线望远镜的镜壳向不同方向适当倾斜，视场会增大，但会带来轴上性能下降的代价。我们设计了由两个相同模块组成的方案，这些模块指向相邻的天区。
英文摘要
Current X-ray telescopes have a combination of field of view and angular resolution that makes it difficult to quickly localize the electromagnetic counterparts of gravitational wave events --- which will become increasingly important when the LIGO and Virgo experiment will work at full sensitivity or when the Einstein Telescope and the Cosmic Explorer observatories will come online in the next decades. We investigate what X-ray optical designs could provide --- in a small mission --- a field of view wide enough to observe quickly the region of the sky constrained by gravitational wave detectors, and at the same time an angular resolution sufficiently good to localize these sources. We study, using ray tracing simulations, how we can optimize a Wolter-I telescope for this purpose. We find that, by appropriately tilting the shells of a Wolter-I X-ray telescope in different directions, the field of view increases, at the cost of a reduction of the on-axis performance. We draw a possible design made of two identical modules pointing at adjacent regions of the sky.
Comments9 pages, 5 figures, SPIE Proceedings Astronomical Telescope + Instrumentation 2026: Ultraviolet to Gamma Ray, Copenhagen, 5-10 July 2026
Journal refJohn Rankin, Daniele Spiga, Paolo Conconi, et al. Proc. SPIE 14146, Space Telescopes and Instrumentation 2026: Ultraviolet to Gamma Ray, 141464F (17 Aug 2026)
