XARTATOMS 研究 M104（草帽星系）的热气体晕：用 XMM-Newton 与 Chandra 的 X 射线光谱，测出晕内气体的温度、密度、熵随半径的分布，并检验“引力束缚的静力气体”与“反馈加热的风”两种图景。数据是 XMM 的三次观测（中心 0900170101 加两个偏置指向），拟合用 Sherpa 的 APEC 热等离子体模型加多种背景成分。当前科学基线是 v18 拟合管线。
XARTATOMS studies the hot-gas halo of M104 (the Sombrero Galaxy): using X-ray spectra from XMM-Newton and Chandra it measures how the temperature, density and entropy of the halo gas change with radius, and tests the two competing pictures — a gravitationally bound hydrostatic gas versus a feedback-heated wind. The data are three XMM observations (central 0900170101 plus two offset pointings); the fitting uses Sherpa with an APEC thermal-plasma model plus several background components. The current science baseline is the v18 fitting pipeline.
cognition-os/00_AI_BRIEFING.md（One-paragraph project summary）/ cognition-os/CLAUDE.md
项目骨架（最新）
Project skeleton (latest)
数据流：事件文件 → ESAS/SAS 提取 → v18 联合拟合 → 径向温度/熵轮廓 →（待做）2D 图。红色虚线为已搁置的 SZ 对比。 Data flow: event files → ESAS/SAS extraction → v18 joint fitting → radial kT/entropy profiles → (to do) 2D maps. The dashed red box is the parked SZ comparison.
四问目标（2026-10-14 PI 新增）
The four-question objectives (added by the PI on 2026-10-14)
| 目标Objective | 问题Question | 状态Status | 当前最佳数字（来源）Best current number (source) | 趋势Trend | ||
|---|---|---|---|---|---|---|
| Q-AQ-A | 哪种本地拟合策略给出的投影温度可靠？ | Which local fitting strategy gives a reliable projected temperature? | QuestionedQuestioned | 内区（2–4′）参考 = MOS2 单相机（S3）：四个背景错设臂全部通过（偏差 +0.008…+0.014 keV，覆盖率 0.71–0.77）；8–10′ 无策略合格（kT ≤ 1 keV 上界撞墙 4–11%，CXB×1.1 偏差 +0.035 keV）；视场边缘与 2D 图未合格；阶段 3（MOS2 + kT 0.2–3 + 多起点，2,400 次拟合）运行中；红队 RT-02 后 D48 收窄为 Questioned（MOS2 优于 MOS1 成立，但 MOS2 自身未被证明干净 — D50/T159）— cognition-os/insights/I067_*.md；cognition-os/04_DECISION_LOG.md D50 |
Inner (2–4′) reference = MOS2-only (S3): passes all four background-misspecification arms (bias +0.008…+0.014 keV, coverage 0.71–0.77); 8–10′ none qualified (kT ≤ 1 keV bound hits 4–11 %, CXB×1.1 bias +0.035 keV); edge and the 2D map unqualified; stage 3 (MOS2 + kT 0.2–3 + multi-start, 2,400 fits) running; after red team RT-02, D48 is narrowed to Questioned (MOS2 preferred over MOS1 stands, but MOS2 itself is not shown clean — D50/T159) — cognition-os/insights/I067_*.md; cognition-os/04_DECISION_LOG.md D50 |
|
| Q-BQ-B | Chandra+XMM 联合的 M104 温度 profile 是什么（10′ 内）？ | What is the Chandra+XMM kT profile of M104 (within 10′)? | First profileFirst profile | Chandra-only 空白天 WStat profile：0.693 [0.650, 0.730]、0.755 [0.700, 0.809]、0.742 [0.633, 0.848]、0.855 [0.727, 0.981] keV（2–4/4–6/6–8/8–10′），与 XMM v18 和 J-linked 每 ≤1σ 一致；不做梯度主张（单一合格方法仅限内区）— cognition-os/experiments/E037_*.md（T155） |
Chandra-only blank-sky WStat profile: 0.693 [0.650, 0.730], 0.755 [0.700, 0.809], 0.742 [0.633, 0.848], 0.855 [0.727, 0.981] keV at 2–4/4–6/6–8/8–10′, ≤1σ from XMM v18 and the J-linked fit; no gradient claim (one method qualified only inside) — cognition-os/experiments/E037_*.md (T155) |
|
| Q-CQ-C | 为何 ~13′ 亮度反而比内侧和 15–30′ 更亮？ | Why is the intensity brighter at ~13′ than inside and at 15–30′? | Resolved: artefactResolved: artefact | 假象（Provisional，I065）：flux 已是每 arcmin²（B020），旧 flux/area 双重归一；裸 SB 比 1.37，冻结 kT 后 1.07；图像 1.041±0.068 无超出；WARP 星系团拟合为 0 — cognition-os/insights/I065_*.md；开放：外环拟合方法、15–30′ 对比不可测；红队 RT-01 正在攻击该假象结论 — cognition-os/REDTEAM_QUEUE.md |
Artefact (Provisional, I065): the saved flux is already per arcmin² (B020), so the old flux/area double-normalised; bare-SB ratio 1.37, 1.07 with kT frozen; images 1.041±0.068 show no excess; the WARP cluster fits to 0 — cognition-os/insights/I065_*.md; open: the outer-ring fit method, the 15–30′ comparison not testable; red team RT-01 now attacking the artefact verdict — cognition-os/REDTEAM_QUEUE.md |
|
| Q-DQ-D | 2D 强度图 + 2D 温度图（区分 feedback 与引力束缚气体） | 2D intensity map + 2D kT map (feedback vs gravitationally bound gas) | OpenOpen | 亮度图已完成（0.5–1.25 keV QPB 扣除马赛克；图像 R11-13/R9-11 = 0.949±0.029 / 1.029±0.037，再次确认无 13′ 图像超出）；2D 温度图探索阶段 1（E038，Provisional）：Fe-L 比值是唯一近纯温度代理；MOS2 2–11′ 仅 ≈1,734 个 Fe-L 源光子 → 每图最多 7–8 个 bin；注入的 ±30° 锥 +20% 对比度以 0.53–0.57（正确符号）恢复；数据中无通过 2 相机 × 2 方案的 N/S-盘温差；MOS2 “热 Wind-S”随 v2 mask 消失（pn0 Wind-S 仍软，未解释）— cognition-os/experiments/E038_*.md（D49） |
Intensity map done (0.5–1.25 keV QPB-subtracted mosaic; image R11-13/R9-11 = 0.949±0.029 / 1.029±0.037, a third confirmation of no 13′ image excess); 2D kT-map exploration stage 1 (E038, Provisional): the Fe-L ratio is the only near-pure temperature proxy; MOS2 2–11′ has only ≈1,734 Fe-L source counts → at most 7–8 bins per map; an injected ±30° cone at +20 % contrast is recovered at 0.53–0.57 with the right sign; no N/S-vs-disk difference passes 2 cameras × 2 schemes in the data; the MOS2 "hot Wind-S" vanishes with the v2 mask (pn0 Wind-S stays soft, unexplained) — cognition-os/experiments/E038_*.md (D49) |
更早的科学目标
Older science objectives
| 目标Objective | 状态Status | 当前最佳数字（来源）Best current number (source) | ||
|---|---|---|---|---|
| 密度/熵轮廓（S06 主线） | Density/entropy profile (S06 main line) | ProvisionalProvisional | K ≈ 67 → 407 keV cm²（10–43 kpc）；t_cool ≈ 10 → 137 Gyr — figure/radial_thermo_profiles_v18/entropy_cooling_time_profile_v18_v15beta.csv |
K ≈ 67 → 407 keV cm² (10–43 kpc); t_cool ≈ 10 → 137 Gyr — figure/radial_thermo_profiles_v18/entropy_cooling_time_profile_v18_v15beta.csv |
| SZ / X 射线张力（~2 倍差异） | SZ / X-ray tension (~2× discrepancy) | ParkedParked | X 射线导出 SZ 比参考高约 2 倍；数据版本问题 — cognition-os/00_AI_BRIEFING.md（S04） |
X-ray-derived SZ is ~2× the reference; data-version issue — cognition-os/00_AI_BRIEFING.md (S04) |
未解问题
Open problems
| 问题Problem | 为什么重要Why it matters | 最佳假设Best hypothesis | 下一个检验Next test | 负责人Owner | 状态Status | ||||
|---|---|---|---|---|---|---|---|---|---|
| Q-A：无策略被认证；全网格验证未跑，需加速 | Q-A: no strategy certified; the full validation grid has not run and needs acceleration | 没有“谁对谁错”的判据，任何温度图都建立在未验证的方法上 | Without a criterion, every temperature map rests on an unvalidated method | 内区候选：MOS2 优于 MOS1（MOS1 硬 IN/OUT÷FWC 比 MOS2 高 +0.10…+0.13，两种 FWC 参考下相同）；但 MOS2 自身未被证明干净（局部参考 1.06–1.19）→ D48 收窄为 Questioned（D50）；外区卡在 1 keV 上界；边缘真值早于 APEC 修复 | Inner candidate: MOS2 preferred over MOS1 (the MOS1 hard IN/OUT÷FWC exceeds MOS2 by +0.10…+0.13 under both FWC references); but MOS2 itself is not shown clean (local reference 1.06–1.19) → D48 narrowed to Questioned (D50); the outer region is blocked by the 1 keV ceiling; the edge truth predates the APEC fix | 阶段 3（运行中）：MOS2 + kT 0.2–3 + 多起点，非零外区 SP 真值、APEC 修正后的边缘真值、2D bin 尺寸代理；2,400 次批量拟合 | Stage 3 (running): MOS2 + kT 0.2–3 + multi-start, with non-zero outer SP truth, a post-APEC edge truth and a 2D-bin size proxy; 2,400 batch fits | I067/D48；job 2026-10-15-fit-validation-stage2 阶段 3I067/D48; stage 3 of job 2026-10-15-fit-validation-stage2 |
RunningRunning |
| Q-B：第一条联合 profile 已出，但交叉标定与外区 CXB 处理未定 | Q-B: the first joint profile exists, but cross-calibration and the outer CXB treatment are unsettled | 10′ 内的 Chandra+XMM 温度 profile 是四问之一，也是温度图的输入 | The Chandra+XMM kT profile within 10′ is one of the four questions and an input to the temperature map | J-linked（ACIS CXB 自由）0.718/0.757/0.782/0.934 keV；Chandra-only 与 v18 每 ≤1σ 一致；但 c_ACIS 常压在 0.7 下界、c_MOS2 在 4′ 外压 1.3 上界 → 联合归一化 Questioned（T155） | J-linked (ACIS CXB free) 0.718/0.757/0.782/0.934 keV; Chandra-only agrees with v18 within 1σ per ring; but c_ACIS often sits at its 0.7 lower bound and c_MOS2 at 1.3 beyond 4′ → joint normalisation Questioned (T155) | 阶段 2a 已跑文献交叉标定先验（c_ACIS 0.89–0.98，c_MOS2 ≈ 1.00）；X/J 单元被 v2-mask 足迹门槛挡住（历史 MOS 谱未过门）；等 Q-A 外区合格 + 新 XMM 提取 | Stage 2a ran literature cross-cal priors (c_ACIS 0.89–0.98, c_MOS2 ≈ 1.00); the X/J cells were blocked by the v2-mask footprint gate (historical MOS spectra fail it); waits for a qualified Q-A outer contract + new XMM extraction | job 2026-10-15-chandra-xmm-perinst-profilejob 2026-10-15-chandra-xmm-perinst-profile |
RunningRunning |
| Q-C：外环谱的拟合方法；15–30′ 对比（R′）不可测 | Q-C: the outer-ring spectral fit method; the 15–30′ comparison (R′) not testable | 13′ 假象已定性（I065），但外环（10–14′，FoV 边缘 ~50% 被裁）的谱点仍不可用：kT 上限撞 1 keV 参数顶、源/背景简并 | The 13′ artefact is characterised (I065), but the outer-ring (10–14′, ~50% clipped at the FoV edge) spectral points remain unusable: kT upper limits hit the 1 keV ceiling, source/background degenerate | 归一错误 + 弱信号简并（I065，Provisional） | Normalisation error + weak-signal degeneracy (I065, Provisional) | 更宽 kT 范围 + profile-likelihood 误差，或绑定/正则化径向模型，或用偏置指向（0900170501/0601） | Wider kT range + profile-likelihood errors, or a tied/regularised radial model, or the offset pointings (0900170501/0601) | Q-C 后续（并入 Virgo 再抽谱 D47）Q-C follow-up (folded into the Virgo re-reduction D47) | OpenOpen |
| Q-D：2D 温度图（等 Q-A） | Q-D: the 2D temperature map (waits for Q-A) | feedback 与引力束缚气体的区分需要 2D 温度 | Separating feedback from bound gas needs a 2D temperature field | 按 D49 探索：窄带比值代理（Fe-L 硬度等）+ 自适应网格（WVT/共享核）+ 象限锚定；验收 = 形态保真度（均匀真值不出假结构、注入结构原位恢复、≥2 相机/方案一致），整体可控偏差可接受；谱拟合 3–4 个关键 bin 作校验 | Explore per D49: narrow-band ratio proxies (e.g. Fe-L hardness) + adaptive grids (WVT/shared kernel) + quadrant anchors; acceptance = morphology fidelity (uniform truth → no spurious structure, injected structure recovered in place, consistent across ≥2 cameras/schemes), an overall controlled bias acceptable; spectral fits of 3–4 key bins as checks | 亮度图已完成；2D 代理探索 job 2026-10-15-2d-ktmap-explore 运行中；区域设计建议 b2（四象限 × 两环带，8 个 MOS2 bin，I=36–91，半宽 11–18%） |
Intensity map done; the 2D proxy exploration job 2026-10-15-2d-ktmap-explore is running; region design recommends b2 (four quadrants × two rings, 8 MOS2 bins, I = 36–91, half-width 11–18 %) |
job 2d-intensity-map → Q-Ajob 2d-intensity-map → Q-A |
OpenOpen |
| MOS1 静态（非耀发）硬过剩：每个指向都偏高 | MOS1 quiescent (non-flare) hard excess: high in every pointing | MOS1 参与所有 v18 拟合；若其背景模型欠 5–20%，会偏置 kT | MOS1 enters every v18 fit; a 5–20% background underestimate would bias kT | 静态 SP 成分或 MOS1 参考系统误差（成因 Questioned） | A quiescent SP component or MOS1 reference systematics (cause Questioned) | Q-A 阶段 2：MOS1-free vs MOS1-with-extra-SP 拟合对比（I066） | Q-A stage 2: MOS1-free vs MOS1-with-extra-SP fit tests (I066) | I066/T151；Q-A 后续I066/T151; Q-A follow-up | ProvisionalProvisional |
| 点源/星系团遮蔽无法把残余压到 <5% | Point-source/cluster masking cannot push residuals below 5% | 弱晕区（R11-13 Angle2 残余/晕比当前 3.6）做任何温度测量前必须先处理残余 | Before any temperature measurement in the faint-halo region (residual/halo currently 3.6 in R11-13 Angle2), the residual must be handled | PSF 翼与星系团发射遮不掉（E035，mask 规则 v2 后残余/晕比仍 0.95） | PSF wings and cluster emission are not maskable (E035; after mask rule v2 the residual/halo ratio is still 0.95) | 建模残余：星系团作为 APEC 成分 + 空间加权残余模型；固定 CXB 归一须与 mask 流量阈值匹配（E035） | Model the residual: the cluster as an APEC component + a spatially weighted residual model; the fixed CXB normalisation must match the mask flux cut (E035) | E035；Virgo 再抽谱 D47E035; the Virgo re-reduction D47 | ProvisionalProvisional |
| Virgo 再抽谱计划（D47） | The Virgo re-reduction plan (D47) | B020/I065/E035 的修正（正确 SB、mask v2、建模残余）都要落到新的提取产品上 | The corrections from B020/I065/E035 (correct SB, mask v2, modelled residual) must land in new extraction products | 以 v1.7.8 基线复现为对照，每阶段只改一个设计元素 | Reproduce the v1.7.8 baseline as the control, then change one design element per stage | S0 基线复现运行中（ODF 356/356 校验和通过）；后续阶段按 D47 顺序 | S0 baseline reproduction running (ODF 356/356 checksums pass); later stages follow the D47 order | job virgo-rereduction-s0；D47job virgo-rereduction-s0; D47 |
RunningRunning |
未来 1–4 周计划
Plan for the next 1–4 weeks
计划完全来自 cognition-os/02_CURRENT_QUESTION.md（2026-10-14/15 节）与各 job 的 BRIEF/REPORT，不是本手册的发明。2026-10-15 13:09Z 更新：Q-A 阶段 2 已出结论（MOS2 内区参考，D48）；第一条 Chandra+XMM profile 与 Chandra-only profile 已出（T155/E037）；亮度图完成；2D 温度图转入代理探索（D49）；红队 RT-01/RT-02 运行中。
The plan comes entirely from cognition-os/02_CURRENT_QUESTION.md (2026-10-14/15 sections) and the job briefs/reports; it is not invented by this handbook. Update 2026-10-15 13:09Z: Q-A stage 2 has its verdict (MOS2 inner reference, D48); the first Chandra+XMM and Chandra-only profiles exist (T155/E037); the intensity map is done; the 2D kT map moves to proxy exploration (D49); red teams RT-01/RT-02 are running.
| 周Week | 内容Content | |
|---|---|---|
| 11 | 已完成：Q-A 清单、试点、阶段 2 全网格（4,800 拟合）→ MOS2 内区参考（D48/I067） | Done: Q-A inventory, pilot, stage-2 full grid (4,800 fits) → MOS2 inner reference (D48/I067) |
| 11 | 已完成：Q-C 判为假象（I065）；红队 RT-01 攻击中；15–45′ 轮廓 job 运行中 | Done: Q-C judged an artefact (I065); red team RT-01 attacking; the 15–45′ profile job running |
| 1–21–2 | 已完成：Q-D 亮度图；2D 代理探索阶段 1（E038：代理菜单 + 计数预算 + 形态注入）；阶段 2（联合相机、更多 ObsID、能带优化、Chandra 内区）已派 | Done: the Q-D intensity map; 2D proxy-exploration stage 1 (E038: proxy menu + count budget + morphology injection); stage 2 (joint cameras, more ObsIDs, band optimisation, Chandra inner) dispatched |
| 1–21–2 | 进行中：Q-B 逐仪器路线已出 J-linked 与 Chandra-only profile（T155/E037）；X/J 单元等新 XMM 提取与合格外区方法 | In progress: the Q-B per-instrument route has produced the J-linked and Chandra-only profiles (T155/E037); the X/J cells wait for new XMM extraction and a qualified outer method |
| 2–42–4 | Q-A 阶段 3（运行中）：MOS2 + kT 0.2–3 + 多起点，外区/边缘/2D 代理 → Virgo 阶段 1（s0 后）→ 红队分诊 | Q-A stage 3 (running): MOS2 + kT 0.2–3 + multi-start, outer/edge/2D proxy → Virgo stage 1 (after s0) → red-team triage |
本次更新
What's new
- 2026-10-15 13:09Z（首次 8 小时刷新）：Q-A 阶段 2 裁定内区参考 = MOS2 单相机（D48/I067），外区/边缘/2D 未合格，阶段 3 运行中；Chandra-only profile（E037）与 J-linked profile（T155）每 ≤1σ 一致；亮度图完成；2D 温度图按 D49 转入代理探索；红队 RT-01/RT-02 启动。刷新期间新增：RT-02 裁定 → D50（D48 收窄为 Questioned，T159）；2D 代理阶段 1（E038）；Virgo s0 基线 PASS，阶段 1 已派。
- 2026-10-15 13:09Z (first 8-hour refresh): Q-A stage 2 sets the inner reference to MOS2-only (D48/I067), outer/edge/2D unqualified, stage 3 running; the Chandra-only profile (E037) and the J-linked profile (T155) agree within 1σ per ring; the intensity map is done; the 2D kT map moves to proxy exploration per D49; red teams RT-01/RT-02 launched. During the refresh: RT-02 triaged → D50 (D48 narrowed to Questioned, T159); 2D proxy stage 1 (E038); the Virgo s0 baseline PASSed and stage 1 was dispatched.
- 2026-10-15（阶段 2 修订）：Q-C 13′ 超出改判为假象（I065/B020）——v18 保存的 flux 本就是每 arcmin²，旧 flux/area 双重归一；图与文字全部更正。Q-A 试点结果（无策略认证，T153）、Q-B 搁置与逐仪器路线（D46）、GTI 保留 2.filter（I066）、mask 规则 v2 与"残余必须建模"（E035）、Virgo 再抽谱计划（D47）入表。新增开问题：MOS1 静态硬过剩。
- 2026-10-15 (stage-2 revision): the Q-C 13′ excess is reclassified as an artefact (I065/B020) — the v18 saved flux was already per arcmin², so the old flux/area double-normalised; figure and text corrected throughout. The Q-A pilot result (no strategy certified, T153), the Q-B parking and per-instrument route (D46), keeping GTI 2.filter (I066), mask rule v2 with "the residual must be modelled" (E035), and the Virgo re-reduction plan (D47) entered the tables. New open problem: the MOS1 quiescent hard excess.
- 2026-10-15：手册首次构建（H-XART-001）；PI 新增四问（Q-A…Q-D），四个研究 job 派出。
- 2026-10-15: first handbook build (H-XART-001); the PI added four questions (Q-A…Q-D) and four research jobs were dispatched.
- 2026-07-15：D45 — P0 反馈检验 NO-GO（full-nuisance 区间过零），P1 停止。
- 2026-07-15: D45 — P0 feedback test NO-GO (full-nuisance interval crosses zero); P1 stopped.
- 2026-10-05/06：Chandra+XMM 联合管线停在 8/20 PASS。
- 2026-10-05/06: the Chandra+XMM joint pipeline stalled at 8/20 PASS.
数据截至
Data as of
2026-10-15 13:09Z（cognition-os/sessions/2026-10-14.md 04:40Z 起的全部条目含 13:07Z PI 指示、02_CURRENT_QUESTION.md 11:40Z 节、I067、E036/E037、T154–T158、D48/D49、REDTEAM_QUEUE.md、各 2026-10-15 job REPORT/BRIEF）。运行中的 job（Virgo s0、15–45′ 轮廓、Fe-L 硬度、Q-A 阶段 3 批量、2D 代理探索、RT-01/RT-02）结果待定。
2026-10-15 13:09Z (all cognition-os/sessions/2026-10-14.md entries from 04:40Z including the 13:07Z PI instruction, the 11:40Z section of 02_CURRENT_QUESTION.md, I067, E036/E037, T154–T158, D48/D49, REDTEAM_QUEUE.md, and the 2026-10-15 job reports/briefs). Results of the running jobs (Virgo s0, 15–45′ profiles, Fe-L hardness, the Q-A stage-3 batch, 2D proxy exploration, RT-01/RT-02) are pending.