目录Contents
工作台：M31 的星系周介质（New-ANGELS III）Workbench: the circumgalactic medium of M31 (New-ANGELS III)
这是什么项目？What is this project?
M31（仙女座星系）是离我们最近的大型旋涡星系。宇宙学认为星系的大部分普通物质（重子）不在星系内部，而在星系周围几十万光年的星系周介质（CGM）——百万度的稀薄气体。本项目用 XMM-Newton 的 22 个指向（proposal 080073，PI J. Li）在 M31 内晕（投影半径 10.5–30.8 kpc）逐视线测量弥漫软 X 射线发射，把「银河系前景 + M31 内晕」的总和（记号 CGMsum）测准，再用空间形状限制其中有多少属于 M31。测量已冻结（D48，2026-10-14）：14 个主样本场的 CGMsum 吸收流量为 0.965 ± 0.044（单位 10⁻¹⁵ erg cm⁻² s⁻¹ arcmin⁻²），共温 kT = 0.17531 ± 0.00436 keV。
M31 (Andromeda) is the nearest large spiral galaxy. Cosmology says most of a galaxy's ordinary matter (baryons) is not inside the galaxy but in the circumgalactic medium (CGM), million-degree thin gas around it. Using 22 XMM-Newton pointings (proposal 080073, PI J. Li) toward the M31 inner halo (projected radii 10.5–30.8 kpc), this project measures the diffuse soft X-ray emission sightline by sightline, pins down the sum "Milky Way foreground + M31 inner halo" (notation CGMsum), and then limits how much belongs to M31 from its spatial shape. The measurement is frozen (D48, 2026-10-14): the 14 primary fields give CGMsum absorbed flux 0.965 ± 0.044 (units 10⁻¹⁵ erg cm⁻² s⁻¹ arcmin⁻²), common kT = 0.17531 ± 0.00436 keV.
来源：cognition-os/00_AI_BRIEFING.md（2026-10-14 D48 块）；cognition-os/04_DECISION_LOG.md D48；cognition-os/insights/I033（0.965 ± 0.044，χ²=11.99/13）。
Source: cognition-os/00_AI_BRIEFING.md (2026-10-14 D48 block); cognition-os/04_DECISION_LOG.md D48; cognition-os/insights/I033 (0.965 ± 0.044, χ²=11.99/13).
现在进展如何？Where does it stand?
测量冻结；v19 基线（14 场）可信；轮廓在 10.5–29 kpc 内平（χ²=11.99/13）。E014 已完成：外 NW 超出不是大尺度天空结构，也不是 OMNI 太阳风；E013（谱联合似然）仍在运行，结果待定。
The measurement is frozen; the v19 baseline (14 fields) is trusted; the profile is flat over 10.5–29 kpc (χ²=11.99/13). E014 is done: the outer-NW excess is neither large-scale sky structure nor OMNI-traced solar wind; E013 (joint spectral likelihood) is still running, results Pending.
还有什么没解决？What is unsolved?
① 前景与 M31 谱形几乎相同，无法按距离分解；② 外 NW 四场偏亮：E014 排除大尺度天空与 OMNI 太阳风，剩余候选是残余软质子/仪器或统计涨落；③ Locatelli 预言 1.29 > 0.965；④ 300 kpc 图未开始。
(i) The foreground and M31 have nearly identical spectra, so distance separation fails; (ii) the bright outer-NW four: E014 excludes large-scale sky and OMNI-traced solar wind, leaving residual soft-proton/instrumental or a statistical fluctuation; (iii) Locatelli predicts 1.29 > 0.965; (iv) the 300-kpc map has not started.
下一步做什么？What do I do next?
按 编号计划：E013 A1 → A2 → 300 kpc；E014 已完成。命令见 byhand。
Plan: E013 A1 → A2 → 300 kpc; E014 is done. Commands at byhand.
最新骨架：流水线与各部分如何衔接Latest skeleton: the pipeline and how the parts connect
来源：流程依据 cognition-os/00_AI_BRIEFING.md 与 background_spectrum_fitting_2T_basedon_obsid_v19.py 的模型结构；数值见 cognition-os/insights/I033。
Source: the flow follows cognition-os/00_AI_BRIEFING.md and the model structure of background_spectrum_fitting_2T_basedon_obsid_v19.py; numbers from cognition-os/insights/I033.
目标表（O1–O5）Objectives (O1–O5)
| 目标Objective | 状态Status | 当前最好数值（估计器已命名）Best current number (estimator named) | 趋势Trend |
|---|---|---|---|
| O1 M31 内晕方向冷视线总和（CGMsum）的测量Total cool line-of-sight emission (CGMsum) toward the M31 inner halo | done | 14 场逆方差平均：吸收 0.5–2 keV 流量 0.965 ± 0.044；共温 kT = 0.17531 ± 0.00436 keV（v19，局部协方差误差）14-field inverse-variance mean: absorbed 0.5–2 keV flux 0.965 ± 0.044; common kT = 0.17531 ± 0.00436 keV (v19, local-covariance errors) | →冻结frozen |
| O2 由轮廓形状约束集中式 M31 热晕的大小/幅度Constrain the size/amplitude of a concentrated M31 hot halo from the profile shape | provisional | 快速流量级检验（I033）：β 模型（r_c=4 kpc）在 R=20 kpc 的近似 95% 上限，MW 常数版 0.05–0.12（β=0.4/0.5/0.6；D49 后的默认版本——MW 线性 b 版 0.08–0.19 所依赖的纬度梯度已被 E014 排除）；Zhang 叠加预期 0.83。谱联合似然版本 E013 待定Quick flux-level check (I033): approximate 95% upper limit on a beta model (r_c=4 kpc) at R=20 kpc; the MW-constant version gives 0.05–0.12 (β=0.4/0.5/0.6; the default after D49 — the MW linear-in-b version, 0.08–0.19, relied on the latitude gradient that E014 excluded); Zhang stack predicts 0.83. The spectral joint-likelihood version, E013, is Pending | ↗ |
| O3 外 NW 亮场的起源Origin of the bright outer-NW fields | E014 done | 外 NW 四场加权平均 1.114 ± 0.071，其余十场 0.870 ± 0.056（原纬度模型 Δχ² = 6.2）。E014（D49）：RASS 比值 0.91 ± 0.12 vs XMM 1.28（无大尺度结构）；OMNI 无窗口超 4e8 cm⁻² s⁻¹（非 SWCX）；SP 比值 3.1 但 Spearman 仅 +0.35（p=0.22，未确立）。按 D49 记为未解释场级系统误差（~0.25）Outer-NW four weighted mean 1.114 ± 0.071, other ten 0.870 ± 0.056 (the original latitude model had Δχ² = 6.2). E014 (D49): RASS ratio 0.91 ± 0.12 vs XMM 1.28 (no large-scale sky); no OMNI window above 4e8 cm⁻² s⁻¹ (not SWCX); SP ratio 3.1 but Spearman only +0.35 (p=0.22, not established). Per D49 carried as an unexplained field-level systematic (~0.25) | → |
| O4 银河系前景模型 + Local Hot Bridge 检验（300 kpc 图）MW foreground model + Local Hot Bridge test (300-kpc map) | 计划planned | 尚无新数值。Locatelli 模型在 M31 足迹投影 1.290 vs 测量 0.965（残差 −0.326，模型紧张）；Ueda 0.312、HaloSat 0.565No new number yet. Locatelli model projected at the M31 footprint: 1.290 vs measured 0.965 (residual −0.326, a model tension); Ueda 0.312, HaloSat 0.565 | → |
| O5 New-ANGELS III 论文The New-ANGELS III manuscript | draft | 16 页内部稿完成（AASTeX，5 表 3 图）；提交门槛见 I013（径向+侧向联合似然、边界感知区间、系统误差网格等）A 16-page internal draft exists (AASTeX, 5 tables, 3 figures); submission gates in I013 (shared radial-plus-side likelihood, boundary-aware intervals, the systematic grid, ...) | ↗ |
来源：O1 cognition-os/insights/I012 与 I033；O2/O3 cognition-os/insights/I033 与 newangels3_discussion/quick_shape_limit_20261014.txt；O4 cognition-os/00_AI_BRIEFING.md（D42–D46 数值）与 02_CURRENT_QUESTION.md；O5 cognition-os/insights/I013 与 paper_apj_v19_cgmsum_draft/README_draft_status_and_submission_gaps.md。
Source: O1 cognition-os/insights/I012 and I033; O2/O3 cognition-os/insights/I033 and newangels3_discussion/quick_shape_limit_20261014.txt; O4 cognition-os/00_AI_BRIEFING.md (D42–D46 numbers) and 02_CURRENT_QUESTION.md; O5 cognition-os/insights/I013 and paper_apj_v19_cgmsum_draft/README_draft_status_and_submission_gaps.md.
未解问题表Open problems
| 问题Problem | 为什么重要Why it matters | 当前最佳假设Best current hypothesis | 下一个检验Next test | 负责Owner | 状态Status |
|---|---|---|---|---|---|
| MW 与 M31 气体同温同形，EPIC 谱无法按距离分解（I006）MW and M31 gas share temperature and spectral shape; EPIC spectra cannot separate them by distance (I006) | 决定论文能声明什么：只能测总和 CGMsum，任何分量归属都需要外部假设Determines what the paper can claim: only the sum CGMsum is measured; any component split needs external assumptions | 分离只能来自空间形状（半径衰减、南北对称）与外部前景约束Separation can only come from spatial shape (radial decline, N/S symmetry) and external foreground constraints | E013 联合空间似然（A1 曲面 → A2 空间模型）E013 joint spatial likelihood (A1 surfaces → A2 spatial models) | E013 | 运行中running |
| 轮廓平（χ²=11.99/13）：M31 集中晕 ≤0.05–0.12 @20 kpc（MW 常数版，D49 后默认），远低于 Zhang 叠加 0.83The profile is flat (χ²=11.99/13): a concentrated M31 halo is ≤0.05–0.12 at 20 kpc (MW-constant version, the default after D49), far below the Zhang stack 0.83 | M31 内晕热气要么比叠加预期暗几倍，要么在 10–30 kpc 内分布很平（核 ≳30 kpc）M31's inner-halo hot gas is either several times fainter than the stacked expectation, or flat over 10–30 kpc (core ≳30 kpc) | M31 内晕热气比叠加均值暗，或与 MW/LG 退化为平背景M31 inner-halo gas is fainter than the stack mean, or degenerate with a flat MW/LG background | E013 A2 用谱似然复核上限（权威版本）E013 A2 re-derives the limit with the spectral likelihood (the authoritative version) | E013 | provisional |
| 外 NW 四场偏亮（1.11 vs 0.87，原纬度梯度 Δχ²=6.2）The four outer-NW fields are bright (1.11 vs 0.87; the original latitude-gradient Δχ²=6.2) | 若为银河系纬度结构，会挤占 M31 的解释空间；若为 SWCX 则是时间效应；若为仪器/软质子则影响系统误差预算If it is Galactic-latitude structure it eats into the M31 budget; if SWCX it is a time effect; if instrumental/soft-proton it changes the systematic budget | E014 已排除大尺度天空（RASS）与 OMNI 太阳风；剩余候选：残余软质子/仪器（SP 比值 3.1 但相关性弱）或统计涨落。按 D49 记为未解释场级系统误差（~0.25）E014 has excluded large-scale sky (RASS) and OMNI-traced solar wind; remaining candidates: residual soft-proton/instrumental (SP ratio 3.1 but weak correlation) or a statistical fluctuation. Per D49 carried as an unexplained field-level systematic (~0.25) | E014 已给出结论；下一步：对四场做 SP 谱形自由的重拟合（lang 现有谱即可）或更严格耀斑过滤（Virgo ODF）E014 has delivered; next: refit the four with the SP spectral shape freed (existing spectra on lang) or a stricter flare filter (Virgo ODF) | E014 | E014 done |
| Locatelli MW 模型在 M31 方向预言 1.29 > 测量 0.965The Locatelli MW model predicts 1.29 > the measured 0.965 toward M31 | 若模型对，则无正的 M31 中心残差；紧张来自模型、转换或吸收之一If the model is right there is no non-negative central M31 residual; the tension lies in the model, the conversion, or absorption | 模型高估、线-宽带转换失配、或 v19 总和偏低（三种解释并列）Model over-prediction, line-to-band conversion mismatch, or a low-biased v19 sum (three live explanations) | 300 kpc RASS 图建立本地 MW 模型（O4）A 300-kpc RASS map to build a local MW model (O4) | 计划planned | 计划planned |
| 南北差异 0.212 ± 0.210（1.01σ）——一致性，不是非对称探测North-minus-South 0.212 ± 0.210 (1.01σ) — consistency, not an asymmetry detection | 非对称上限是论文的直接结果之一；两侧半径分布不匹配（中位 19.28 vs 14.97 kpc）The asymmetry limit is one of the paper's direct results; the two sides have unmatched radius distributions (medians 19.28 vs 14.97 kpc) | 总和在两侧一致；任何分量级非对称结论都需要 MW 均匀或 M31 对称假设The sum is consistent between sides; any component-level asymmetry claim needs MW-uniformity or M31-symmetry assumptions | 共享径向项 + 侧向偏移的联合拟合（I013 提交门槛 1）A joint fit with a shared radial term plus a side offset (I013 submission gate 1) | 计划planned | 计划planned |
来源：cognition-os/02_CURRENT_QUESTION.md（2026-10-14 D48 块）；cognition-os/insights/I033、I006、I012、I017；cognition-os/experiments/E013、E014；cognition-os/04_DECISION_LOG.md D49。
Source: cognition-os/02_CURRENT_QUESTION.md (2026-10-14 D48 block); cognition-os/insights/I033, I006, I012, I017; cognition-os/experiments/E013, E014; cognition-os/04_DECISION_LOG.md D49.
未来 1–4 周计划（依据 D48 与 02_CURRENT_QUESTION）Plan for the next 1–4 weeks (from D48 and 02_CURRENT_QUESTION)
-
E013 A1 收尾：20 个冻结 v19 会话的逐场 (kT, norm) Δstat 曲面（≤12 h，≤6 workers）。产出
newangels3_discussion/E013_。 Finish E013 A1: per-field (kT, norm) Δstat surfaces from the 20 frozen v19 sessions (≤12 h, ≤6 workers). Outputs/surfaces/*.csv newangels3_discussion/E013_./surfaces/*.csv - E013 A2（Claude）：在曲面上插值联合似然 Σ Δstat_i(kT, N_MW(b_i)+A·g(r_i))，对 N_MW、梯度、kT 做 profile，A=0 边界用模拟校准单侧上限。 E013 A2 (Claude): interpolate the joint likelihood Σ Δstat_i(kT, N_MW(b_i)+A·g(r_i)) on the surfaces, profile over N_MW, the gradient and kT, and calibrate one-sided limits at the A=0 boundary by simulation.
- E014 交叉检验（已完成，2026-10-14）：RASS R45 逐场速率与纬度斜率（对照：R67 应为 0）、OMNI 太阳风质子通量（阈值 4e8 cm^-2 s^-1）、只读 Sherpa 噪声参数表。双路执行（luna + Hermes）。结论（D49）：RASS 比值 0.91 ± 0.12 vs XMM 1.28（排除大尺度天空）；OMNI 无窗口超阈（排除 SWCX）；SP 相关性弱（Spearman +0.35，p=0.22）。外 NW 四场记为未解释场级系统误差（~0.25）。 E014 cross-check (done, 2026-10-14): RASS R45 per-field rates and the latitude slope (control: R67 should give 0), OMNI solar-wind proton flux (threshold 4e8 cm^-2 s^-1), and a read-only Sherpa nuisance table. Dual execution (luna + Hermes). Result (D49): RASS ratio 0.91 ± 0.12 vs XMM 1.28 (large-scale sky excluded); no OMNI window above threshold (SWCX excluded); the SP correlation is weak (Spearman +0.35, p=0.22). The outer-NW four are carried as an unexplained field-level systematic (~0.25).
- 外 NW 四场重拟合（D49 排队）：对 0201/0301/0501/0601 加同期对照（0701/0801/1501/1601），用 lang 现有谱、软质子谱形（折断幂律指数）自由化重拟；另一路在 Virgo 按 ODF 级更严格耀斑过滤后重处理。 Refit the outer-NW four (queued, D49): refit 0201/0301/0501/0601 plus same-epoch controls (0701/0801/1501/1601) from the existing spectra on lang with the soft-proton spectral shape (broken power-law indices) freed; the other route reprocesses on Virgo with a stricter ODF-level flare filter.
- 300 kpc RASS 图设计（E014 之后）：原生 counts+exposure 前向模型，扫描/瓦片噪声项；用于本地 MW 模型与 Local Hot Bridge 检验（O4）。 Design the 300-kpc RASS map (after E014): a native counts+exposure forward model with scan/tile nuisance terms; for a local MW model and the Local Hot Bridge test (O4).
- 论文讨论：把 I033 的三条科学线（总和、轮廓形状、NW 起源）写进 New-ANGELS III 草稿的讨论部分；提交门槛仍按 I013。 Paper discussion: write the three I033 science lines (total, profile shape, NW origin) into the New-ANGELS III draft discussion; submission gates remain those of I013.
来源：cognition-os/00_AI_BRIEFING.md（2026-10-14 D48）；cognition-os/02_CURRENT_QUESTION.md；cognition-os/experiments/E013、E014；cognition-os/04_DECISION_LOG.md D49（外 NW 四场重拟合排队）；cognition-os/insights/I013。
Source: cognition-os/00_AI_BRIEFING.md (2026-10-14 D48); cognition-os/02_CURRENT_QUESTION.md; cognition-os/experiments/E013, E014; cognition-os/04_DECISION_LOG.md D49 (the outer-NW refit queued); cognition-os/insights/I013.
本次更新What's new
- 2026-10-14：E014 完成，D49 落笔：外 NW 超出不是大尺度天空（RASS 0.91 ± 0.12 vs XMM 1.28），不是 OMNI 太阳风（无窗口超 4e8），软质子相关性未确立（Spearman +0.35，p=0.22）；四场记为未解释场级系统误差（~0.25），重拟合已排队。 2026-10-14: E014 finished and D49 recorded: the outer-NW excess is not large-scale sky (RASS 0.91 ± 0.12 vs XMM 1.28), not OMNI-traced solar wind (no window above 4e8), and the soft-proton correlation is not established (Spearman +0.35, p=0.22); the four fields are carried as an unexplained field-level systematic (~0.25), with a refit queued.
- 2026-10-14：D48 冻结 v19 测量；论文定名 New-ANGELS III；E013/E014 派发（结果待定）；Kavanagh 2020 更正（其区域是盘内背景，不是晕视线）。 2026-10-14: D48 freezes the v19 measurement; the paper is named New-ANGELS III; E013/E014 dispatched (results Pending); the Kavanagh 2020 correction (their regions are disc-adjacent backgrounds, not halo sightlines).
- 2026-10-14：本工作台（handbook）首次建成。 2026-10-14: this workbench (handbook) was first built.
来源：cognition-os/04_DECISION_LOG.md D48、D49；cognition-os/experiments/E014（「Result after luna correction 1 and the Hermes cross-check」节）；cognition-os/insights/I033；cognition-os/experiments/E013。
Source: cognition-os/04_DECISION_LOG.md D48 and D49; cognition-os/experiments/E014 (the "Result after luna correction 1 and the Hermes cross-check" section); cognition-os/insights/I033; cognition-os/experiments/E013.
数据截至Data as of
2026-10-14（最新读到的来源：cognition-os/04_DECISION_LOG.md D49；cognition-os/experiments/E014（2026-10-14T07:40Z 结果节）；cognition-os/00_AI_BRIEFING.md 的 2026-10-14 D48 块newest source read: cognition-os/04_DECISION_LOG.md D49; cognition-os/experiments/E014 (the 2026-10-14T07:40Z result section); the 2026-10-14 D48 block of cognition-os/00_AI_BRIEFING.md）