4米国际液体镜面望远镜的时域能力展示：暂现源与变源探测的早期普查
Demonstrating the Time-Domain Capabilities of the 4-m International Liquid Mirror Telescope: An Early Census of Transient and Variable Detections
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中文总结 AI 辅助
本研究展示4米国际液体镜面望远镜（ILMT）的时域能力，利用PyLMT管线分析近3700帧图像，探测到近23000个天体，开发DART仪表盘，证实液体镜面望远镜适用于时域天文学。
中文摘要 AI 辅助
PyLMT暂现源探测管线自2023年11月起投入运行，几乎实时探测ILMT图像中的暂现源与变源天体。该自动化管线采用图像相减技术，已分析近3700帧CCD图像，生成近23000条警报，对应已验证的暂现源候选体与已编目变源：约21000条警报对应已知MPC小行星，近2000条对应变星（包括食双星、天琴座RR型变星、盾牌座δ型变星、金牛座T型星等），509条对应变活动星系核（AGN，包括类星体QSO、塞弗特星系、 blazar等），21个超新星候选体，以及若干其他有趣候选体。本文对这些探测结果及其科学意义进行简要概述，强调该巡天对广泛天体物理研究及科学案例的潜在贡献。此外，利用Streamlit开发了名为DART的暂现源探测仪表盘，可基于PyLMT与SIMBAD分类对候选体进行可视化与分类，包含 cone-search 功能并展示关键元数据，提供公开可访问的直观界面。研究结果表明，ILMT等液体镜面望远镜适用于时域天文学，强调小视场巡天设备在系统性暂现源科学项目中可发挥重要作用。
英文摘要
The PyLMT transient detection pipeline has been operational since November 2023, detecting transient and variable objects in the ILMT images in almost real time. Using the image subtraction technique, nearly 3700 CCD frames have been analyzed by the automated pipeline, generating nearly 23,000 alerts for the detection of verified transient candidates and cataloged variable sources. Around 21,000 of the alerts correspond to known MPC asteroids, nearly 2000 correspond to variable stars (including eclipsing binaries, RR Lyrae, Delta Scuti, T-Tauri, etc.), 509 correspond to variable AGNs (including QSOs, Seyfert galaxies, and blazars), 21 supernova candidates, and several other interesting candidates. We provide a concise overview of the detections and their significance, emphasizing the surveys potential contributions to a broad class of astrophysical and scientific cases. A transient detection dashboard called DART was developed using Streamlit to visualize and categorize candidates based on PyLMT and SIMBAD classifications. It includes cone-search functionality and displays key metadata, offering an intuitive interface that is publicly accessible. Our results demonstrate the viability of liquid mirror telescopes such as the ILMT for time-domain astronomy, emphasizing the important role that small-field survey facilities can play in systematic transient science programs.
发表机构
- Aryabhatta Research Institute of Observational Sciences (ARIES)（阿亚巴塔观测科学研究所）
- Department of Applied Optics and Photonics, University of Calcutta（加尔各答大学应用光学与光子学系）
- Physical Research Laboratory（物理研究实验室）
- Mahatma Jyotiba Phule Rohilkhand University（马哈特马·乔蒂巴·普尔罗希尔坎德大学）
- Institute of Astrophysics and Geophysics, Liège University（列日大学天体物理学与地球物理学研究所）
机构由 AI 辅助整理，请以论文原文为准。
