进行中 Working
稻城射电望远镜（DART）巡天源表构建 DART Survey Catalog
以稻城射电望远镜巡天数据为基础，进行源探测和交叉证认，目标是形成可检索、可复现的射电源表，为后续瞬变源搜索和科学研究提供基础数据。 Building a searchable and reproducible radio-source catalog from DART survey data, with source detection and cross-validation for future transient and scientific studies.
快速射电暴（FRB）及其持续射电源（PRS）的超新星起源模型 Supernova-Origin Models for FRBs and PRSs
围绕快速射电暴与持续射电源可能的超新星遗迹或致密星环境，建立从爆发、能量注入到射电辐射演化的物理图像，并尝试连接观测特征与源区环境。 Exploring whether FRBs and their persistent radio sources can arise from supernova remnants or compact-object environments, linking energy injection, radio evolution, and local source conditions.
中国天眼（FAST）数据中的脉冲星搜索 Pulsar Searches in FAST Data
面向FAST观测数据开展脉冲星候选体搜索、筛选和验证，结合时域信号处理与机器学习方法，提高弱信号和复杂环境中的发现效率。 Searching, filtering, and validating pulsar candidates in FAST observations, combining time-domain signal processing with machine learning methods to improve discovery efficiency.
利用 JWST 揭示银河系弥散暖电离介质 Studying the Galactic Warm Ionized Medium with JWST
利用 JWST 背景观测数据，研究银河系弥散温电离介质（Warm Ionized Medium）的空间分布、物理性质及其与多相星际介质之间的联系，希望借助高灵敏度红外光谱揭示银河系气体循环与演化过程。 Using serendipitous JWST background observations, I study the spatial distribution and physical properties of the Galactic Warm Ionized Medium (WIM) and its connection to the multiphase interstellar medium. By exploiting sensitive infrared spectroscopy, I aim to reveal the circulation and evolution of diffuse gas in the Milky Way.
已完成 Finished
论文 Papers
Extreme Starburst Galaxies Do Not Amplify Fast Radio Burst Activity Extreme Starburst Galaxies Do Not Amplify Fast Radio Burst Activity
利用中国天眼（FAST），我们对 20 个超高光度和极高光度红外星系开展了快速射电暴（FRB）深度搜索。结合恒星形成率、观测时间和爆发能量分布建立统计框架，本工作首次在总体样本层面对单位恒星形成率对应的 FRB 活动进行了定量限制，结果表明，极端恒星形成环境并不会显著增强可观测的 FRB 爆发活动。 Using the Five-hundred-meter Aperture Spherical Telescope (FAST), we conducted a deep search for fast radio bursts (FRBs) in 20 ultra- and hyper-luminous infrared galaxies. By developing a statistical framework that incorporates star formation rates, observing time, and burst energy distributions, this work provides the first population-level constraint on FRB activity per unit star formation, demonstrating that extreme starburst environments do not necessarily enhance observable FRB activity.
Fast Radio Bursts Associated with Persistent Radio Sources Prefer Hydrogen-poor Superluminous Supernova Host Environments Fast Radio Bursts Associated with Persistent Radio Sources Prefer Hydrogen-poor Superluminous Supernova Host Environments
本工作比较了具有致密持续射电源（PRS）的快速射电暴宿主星系与贫氢超亮超新星、富氢超亮超新星、普通核心坍缩超新星及非 PRS FRB 宿主的性质。通过恒星质量、比恒星形成率、气相金属丰度及统计分布检验，我们发现 FRB–PRS 宿主最接近贫氢超亮超新星宿主，并集中在低质量、高比恒星形成率和低金属丰度的极端环境中。这表明 FRB–PRS 可能并非普通 FRB 的随机子样本，而更可能与低金属丰度大质量恒星形成的年轻磁星有关。 This work compares the host galaxies of fast radio bursts associated with compact persistent radio sources (FRB–PRS systems) with those of hydrogen-poor and hydrogen-rich superluminous supernovae, ordinary core-collapse supernovae, and FRBs without detected PRSs. Using host stellar mass, specific star formation rate, gas-phase metallicity, and statistical distribution tests, we find that FRB–PRS hosts most closely resemble hydrogen-poor superluminous supernova hosts and preferentially occupy extreme low-mass, high-sSFR, and low-metallicity environments. These results suggest that FRB–PRS systems are not simply a random subset of the general FRB population, but may instead be linked to young magnetars formed through low-metallicity massive-star channels.
景东 120 米射电望远镜：银河系及近邻星系的中性氢研究 Jingdong 120-m Radio Telescope: Neutral Hydrogen Studies of the Milky Way and Nearby Galaxies
本文聚焦景东 120 米射电望远镜在 21 厘米中性氢谱线研究中的应用前景，讨论其对银河系及近邻星系中冷气体分布、速度结构和动力学过程的观测能力。依托大口径、高灵敏度和宽频覆盖，JRT 有望开展高精度中性氢成图，研究星际介质循环、星系气体吸积与相互作用，并为理解恒星形成和星系演化提供关键观测约束。 This review examines the prospects for using the Jingdong 120-m Radio Telescope to study the 21-cm neutral-hydrogen line in the Milky Way and nearby galaxies, focusing on cold-gas distribution, velocity structure, and dynamics. Its large aperture, high sensitivity, and broad frequency coverage will enable detailed H I mapping, helping trace interstellar gas cycling, galactic gas accretion and interactions, and their roles in star formation and galaxy evolution.
利用景东 120 米射电望远镜开展时域天文学研究 Time-domain Astronomy with the Jingdong 120-m Radio Telescope
景东 120 米射电望远镜凭借 1–18 GHz 频率覆盖、微秒级时间分辨率和高精度偏振测量，将用于快速射电暴、伽马射线暴、超新星爆发前质量损失、潮汐瓦解事件及恒星耀斑等瞬变源研究，并与 EP、SVOM、WFST 等设备开展多波段协同观测。 With 1–18 GHz coverage, microsecond time resolution, and high-precision polarimetry, the Jingdong 120-m Radio Telescope will study fast radio bursts, gamma-ray bursts, pre-supernova mass-loss histories, tidal disruption events, and stellar flares, while supporting multiwavelength coordination with EP, SVOM, and WFST.
景东 120 米射电望远镜：高能宇宙线科学 Jingdong 120-m Radio Telescope: High-energy Cosmic-ray Science
本文综述景东 120 米射电望远镜在高能宇宙线领域的观测前景：通过超新星遗迹、脉冲星风云、微类星体和星系团等非热扩展源的宽频射电与偏振观测，研究宇宙线的加速、输运和磁场环境，并利用月壤 Askaryan 效应搜寻超高能宇宙线和中微子。 This review outlines the telescope’s prospects for high-energy cosmic-ray science. Broadband radio and polarization observations of nonthermal extended sources—including supernova remnants, pulsar wind nebulae, microquasars, and galaxy clusters—will probe cosmic-ray acceleration, transport, and magnetic environments, while lunar Askaryan observations will search for ultra-high-energy cosmic rays and neutrinos.
工具 Tools
SPHEREx_DataProcessing SPHEREx_DataProcessing
SPHEREx Data Processing 是一个用于处理 SPHEREx 时域观测数据的轻量级工具。它主要从一天内的多次观测中提取亚稳态氦信号，并分析其强度随时间的变化，从而直观展示亚稳态氦在日内时间尺度上的演化。 SPHEREx Data Processing is a lightweight tool for analyzing time-domain observations from SPHEREx. It extracts metastable helium signals from repeated observations within a single day and tracks their intensity variations over time, providing a direct view of the short-term evolution of metastable helium emission.
fast-data-processor fast-data-processor
FAST Data Processor 是一个用于标准化处理 FAST 观测数据的自动化工具。它将频率范围切割、不同偏振通道合并以及相关数据格式整理等步骤整合为统一流程，从而减少重复操作，并为后续的数据分析生成结构一致、便于使用的数据产品。 FAST Data Processor is an automated tool for the standardized processing of FAST observational data. It combines operations such as frequency-range selection, polarization-channel merging, and data-format organization into a unified workflow, reducing repetitive manual work and producing consistently structured data products for subsequent analysis.
报告 Talks
2026星际物质及动态宇宙（VII）论坛会议 Forum on Interstellar Matter and the Dynamic Universe (VII), 2026
2026.1.10，海报展示 2026.1.10, poster presentation
Characterization of Instrumental Polarization in the DART Galactic-plane Survey Characterization of Instrumental Polarization in the DART Galactic-plane Survey
FRB 2026 FRB 2026
2026.7.6-2026.7.10，3 分钟报告 2026.7.6-2026.7.10, 3-minute flash talk
Constraining Observable Repeating-FRB Activity in Extreme Star-forming Galaxies with FAST Constraining Observable Repeating-FRB Activity in Extreme Star-forming Galaxies with FAST
北京天文学会2026年度学术交流研讨会 Beijing Astronomical Society Annual Meeting, 2026
2026.9.11，1 分钟报告 + 海报展示 2026.9.11, 1-minute flash talk + poster presentation
A Smooth Young Remnant Supplies Faraday Depth but Not Faraday Dynamics in FRB 20190520B A Smooth Young Remnant Supplies Faraday Depth but Not Faraday Dynamics in FRB 20190520B
参考 Reference
Li Di Astro
https://lidi-astro.com
中国科学院国家天文台星际介质组 Interstellar Medium Group, National Astronomical Observatories, Chinese Academy of Sciences (NAOC)
http://groups.bao.ac.cn/ism/tzsx/202105/t20210525_640943.html
S. R. Kulkarni
https://sites.astro.caltech.edu/~srk/
笔记 Notebook
记录尚未成形的思考与一些疯狂的想法。 Recording thoughts and some wild ideas that haven't formed into formal projects yet.
小射电望远镜观测 Small Radio Telescope Observations
搭建或使用小型射电望远镜进行可持续观测，把仪器、数据采集、定标和简单科学目标连接起来，让个人尺度的观测也能进入真正的科研流程。 Building or using small radio telescopes for sustained observations, connecting instrumentation, data acquisition, calibration, and compact science goals.
寻找外星人 / 研究宇宙社会 SETI and Cosmic Sociology
把寻找地外文明的观测问题和“宇宙社会学”的思想实验放在一起，思考技术文明的可观测痕迹、沉默的原因，以及我们如何定义宇宙中的交流。 Bringing SETI and cosmic-sociology thought experiments together to think about observable technosignatures, the causes of cosmic silence, and how communication might be defined on astronomical scales.