发表机构
University of Arizona（亚利桑那大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究利用NASA的HWO模拟数据，评估从类地系外行星检测海洋耀斑的可行性，确定5-25信噪比下需至少120度相位角，为相关空间望远镜任务观测要求提供约束。
AI 中文摘要
未来用于搜寻外星生命的空间望远镜需要能够探测潜在宜居环境的方法。液态水是已知生命存在的必要条件，因此其存在是表征潜在类地系外行星的重要可观测指标。从空间未分辨的观测中远程推断行星表面液态水的存在是一项重大挑战，而海洋耀斑的检测可提供支撑证据。本研究利用美国国家航空航天局（NASA）宜居世界天文台（HWO）的模拟数据，评估从类地系外行星检测海洋耀斑的可行性。我们使用包含耀斑贡献的模型对这些模拟观测进行检索，并与不包含耀斑的检索结果进行模型选择对比。研究发现，在5至25的光谱信噪比范围内，至少120度的相位角是检测耀斑的必要条件。我们的研究结果通过对望远镜关键观测要求提供约束，为任务发展提供了方向。
英文摘要
Future space telescopes searching for extraterrestrial life require methods to detect environments that can potentially support life. Liquid water is considered essential for life as we know it and its presence is therefore an important observable when characterizing potentially Earth-like exoplanets. Remotely inferring the presence of surface liquid water on a world from spatially unresolved observations is an outstanding challenge where the detection of ocean glint could provide supporting evidence. This study assesses the feasibility of detecting ocean glint from Earth-like exoplanets using simulated data from NASA's Habitable World Observatory (HWO). We conducted retrievals on these simulated observations using a model that included a glint contribution and performed model selection against retrievals that did not include glint. We find that over a range of spectral signal-to-noise ratios from 5 to 25, a phase angle of at least 120 deg is necessary for glint detection. Our results offer the opportunity to shape mission development by providing constraints on key telescope observing requirements.
CommentsSubmitted to AAS; comments welcome!
