术语表
Glossary
| 术语Term | 含义（一句话）Meaning (one sentence) | |
|---|---|---|
| ARFARF | ancillary response file：有效面积随能量的曲线，前向折叠时乘在模型上。 | ancillary response file: the effective area versus energy, multiplied onto the model when forward folding. |
| RMFRMF | redistribution matrix file：把真能量映射到测量通道的概率矩阵。 | redistribution matrix file: the probability matrix mapping true energy to measured channels. |
| PI channelPI channel | pulse-invariant 通道：CCD 电荷量换算的能道编号。 | pulse-invariant channel: the energy-channel index derived from CCD charge. |
| QPB / FWCQPB / FWC | 静默粒子背景；用滤光片关闭（filter-wheel-closed）观测建模。 | quiescent particle background; modelled from filter-wheel-closed (FWC) observations. |
| SPSP | soft proton：太阳抛出的质子打在探测器上产生的平坦连续谱污染。 | soft protons: flat-continuum contamination from solar protons hitting the detector. |
| CXBCXB | cosmic X-ray background：未分辨遥远源的各向同性 X 射线背景。 | cosmic X-ray background: the isotropic X-ray glow of unresolved distant sources. |
| LHBLHB | local hot bubble：太阳系周围的百万度本地热泡。 | local hot bubble: the million-degree bubble around the Solar System. |
| SWCXSWCX | solar-wind charge exchange：太阳风离子俘获电子发出的软 X 射线（时间变化）。 | solar-wind charge exchange: soft X-rays from solar-wind ions capturing electrons (time-variable). |
| APECAPEC | 天体物理等离子体的热光谱模型（ Astrophysical Plasma Emission Code）。 | the Astrophysical Plasma Emission Code: a standard thermal-plasma spectrum model. |
| normnorm | APEC 归一化：10⁻¹⁴/(4πD²)×∫n_e n_H dV，正比于发射量。 | the APEC normalization: 10⁻¹⁴/(4πD²)×∫n_e n_H dV, proportional to emission measure. |
| emission measureemission measure | 发射量 ∫n_e n_H dV（cm⁻³），由 norm 和距离推出。 | emission measure ∫n_e n_H dV (cm⁻³), inferred from the norm and the distance. |
| C-statC-stat | Cash 统计量：泊松计数谱的似然拟合统计。 | the Cash statistic: the likelihood statistic for Poisson count spectra. |
| profile likelihoodprofile likelihood | 固定参数 θ、重新优化其余参数后的似然；Δstat=1 给 68% 区间。 | the likelihood after fixing θ and re-optimizing the rest; Δstat = 1 gives the 68% interval. |
| vignettingvignetting | 渐晕：离轴角越大有效面积越低。 | vignetting: the effective area falls with off-axis angle. |
| FoVFoV | field of view：一次指向覆盖的天空范围（MOS 半径约 15′）。 | field of view: the sky area covered by one pointing (MOS radius ~15′). |
| MOS / PN / ACISMOS / PN / ACIS | XMM 的三台 CCD 相机（MOS1、MOS2、PN）；ACIS 是 Chandra 的 CCD 相机。 | the three XMM CCD cameras (MOS1, MOS2, PN); ACIS is Chandra's CCD camera. |
| ESASESAS | XMM 扩展源分析软件包（SAS 的一部分），提供 QPB/SP/天空背景产品。 | the XMM extended-source analysis package (part of SAS), providing QPB/SP/sky-background products. |
| SherpaSherpa | CIAO 的拟合环境，本项目所有谱拟合都用它。 | the CIAO fitting environment; every spectral fit in this project uses it. |
| WVTWVT | 加权 Voronoi tessellation：按信噪比自适应分区的算法。 | weighted Voronoi tessellation: adaptive binning by signal-to-noise. |
| beta modelbeta model | 面亮度 S(r)=S₀(1+(r/r_c)²)^(-3β+1/2)，用来去投影得到 n_e(r)。 | the surface-brightness profile S(r)=S₀(1+(r/r_c)²)^(-3β+1/2), deprojected to get n_e(r). |
| entropyentropy | K = kT·n_e^(−2/3)（keV cm²）：绝热不变量，引力结构形成的基线是 K ∝ r^1.1。 | K = kT·n_e^(−2/3) (keV cm²): an adiabatic invariant; the gravitational-structure baseline is K ∝ r^1.1. |
| CGMCGM | circumgalactic medium：星系周围的百万度气体晕。 | circumgalactic medium: the million-degree gas halo around a galaxy. |
| D45D45 | 决策日志第 45 条：P0 反馈检验 NO-GO，禁止重启 P1 链。 | decision-log entry 45: the P0 feedback test NO-GO; the P1 chain must not be restarted. |
阅读清单（为什么重要）
Reading list (why each matters)
- C 统计量的原始定义；本项目所有谱拟合的统计基础。the original definition of the C statistic; the statistical basis of every spectral fit here.
- Smith et al. (2001, A&A 365, L13) — XMM-Newton EPIC 相机描述。Smith et al. (2001, A&A 365, L13) — description of the XMM-Newton EPIC cameras.
- Weisskopf et al. (2002, PASP 114, 1) — Chandra 的设计与能力。Weisskopf et al. (2002, PASP 114, 1) — Chandra's design and capabilities.
- Smith et al. (2012?) APEC/AtomDB — 热等离子体模型的原子数据库来源。Smith et al. (2012?) APEC/AtomDB — the atomic database behind the thermal-plasma model.
- Snowden et al. (2008?) ESAS — XMM 扩展源分析（QPB/SP/天空背景）的标准方法，本项目提取管线的依据。Snowden et al. (2008?) ESAS — the standard approach for XMM extended-source analysis (QPB/SP/sky background), the basis of the extraction pipeline.
- Cavaliere & Fusco-Femiano (1976) — beta 模型的起源。Cavaliere & Fusco-Femiano (1976) — the origin of the beta model.
- Voit (2005, RvMP 77, 207) — 星系团/群热气体的熵与引力加热基线。Voit (2005, RvMP 77, 207) — entropy and the gravitational-heating baseline for hot gas in groups and clusters.
- Sunyaev & Zeldovich (1972) — SZ 效应；项目的 parked 分支用 X 射线数据预测它。Sunyaev & Zeldovich (1972) — the SZ effect; the parked branch predicts it from X-ray data.
- Li, J.-T. et al. (2018?) CGM 综述 — 周星系介质研究的现状综述（背景阅读）。Li, J.-T. et al. (2018?) CGM review — a review of circumgalactic-medium research (background reading).
注：清单中的期刊页码建议在 ADS 检索标题确认后再引用；项目论文草稿是 XARTATOMS_Paper_I_AAS_journals.pdf（仓库根目录）。
Note: verify exact page numbers on ADS before citing; the project's paper draft is XARTATOMS_Paper_I_AAS_journals.pdf (repo root).