本版本不含引言（PI 2026-10-15 指示：本版只要求 §3 与 §4）。后续版本撰写引言时应使用的来源文件：cognition-os/insights/I021_s09_paper_plan_v2.md（论文 I 故事线三条）、cognition-os/stages/S09_xmm_fxt_chandra_thermal_wind_science.md（阶段动机）、HK2020（Hodges-Kluck et al. 2020, ApJ 903, 35；先前 X 射线范围 30–40 kpc 与 ≥ 60 kpc FUV 丝）、Liu et al. 2026（arXiv:2609.37646；核心区 RGS/EPIC）、Li 2026（arXiv:2603.21306；热 CGM 泡理论）与 C10 文献刷新清单。
This version has no introduction (PI instruction of 2026-10-15: this version asks only for §3 and §4). cognition-os/insights/I021_s09_paper_plan_v2.md (the three-point Paper I storyline), cognition-os/stages/S09_xmm_fxt_chandra_thermal_wind_science.md (stage motivation), HK2020 (Hodges-Kluck et al. 2020, ApJ 903, 35; the previous 30–40 kpc X-ray extent and the ≥ 60 kpc FUV filaments), Liu et al. 2026 (arXiv:2609.37646; the nuclear RGS/EPIC work), Li 2026 (arXiv:2603.21306; the hot-CGM bubble theory) and the C10 literature-refresh list.
本版本不含数据处理节（PI 2026-10-15 指示同上）。后续版本撰写 §2 时应使用的来源文件：cognition-os/experiments/E083_xmmlinemap_s08_handover_e076_e098.md（约定：坐标架、PW 单位、掩罩、PAGESET、CLMASK、on-off 谱引擎）、E084/E085/E086/E087（S09 记录：重处理、耀发 GTI、MOS 梯度、PN 图与联合图）、XMMLineMap E084（FXT v1.30 再处理与 CALDB）、2026-10-15-S09-FACTS.md（距离、单位、帧）、以及 I021 的 C9（ObsID/曝光表、排除 0110930201 与 0802710401、gtibug 与再处理记录 B012）。
This version has no data-reduction section (same PI instruction). A later version writing §2 should use these sources: cognition-os/experiments/E083_xmmlinemap_s08_handover_e076_e098.md (conventions: frame, PW units, masks, PAGESET, CLMASK, the on-off spectral engine), E084/E085/E086/E087 (S09 records: reprocessing, flare GTIs, the MOS gradient, the PN and joint maps), XMMLineMap E084 (the FXT v1.30 reprocessing and CALDB), 2026-10-15-S09-FACTS.md (distance, units, frame, sheet of 2026-10-15), and I021's C9 (the ObsID/exposure table, the exclusion of 0110930201 and 0802710401, the gtibug and the B012 reprocessing record).