黑暗分类很重要：用LSST寻找原始黑洞

IF 5.9 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-10-14 DOI:10.1088/1475-7516/2025/10/066

Miguel Crispim Romao, Djuna Croon, Benedict Crossey and Daniel Godines

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引用次数: 0

摘要

基于Vera C. Rubin天文台即将进行的时空遗留调查（LSST）的微透镜观测，我们提出了对原始黑洞（PBHs）作为暗物质组成部分的丰度的预测约束。我们使用鲁宾天文台的OpSims模拟的微透镜光曲线目录来证明竞争约束关键依赖于最小化分类算法的假阳性率（FPR）。我们提出了贝叶斯信息准则和增强决策树作为有效的判别器，并将它们的推导效率和FPR与更标准的χ2检验进行了比较。

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Dark classification matters: searching for primordial black holes with LSST

We present projected constraints on the abundance of primordial black holes (PBHs) as a constituent of dark matter, based on microlensing observations from the upcoming Legacy Survey of Space and Time (LSST) at the Vera C. Rubin Observatory. We use a catalogue of microlensing light curves simulated with Rubin Observatory's OpSims to demonstrate that competitive constraints crucially rely on minimising the false positive rate (FPR) of the classification algorithm. We propose the Bayesian information criterion and a Boosted Decision Tree as effective discriminators and compare their derived efficiency and FPR to a more standard χ2-test.

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来源期刊

Journal of Cosmology and Astroparticle Physics 地学天文-天文与天体物理

CiteScore

10.20

自引率

23.40%

发文量

632

审稿时长

1 months

期刊介绍： Journal of Cosmology and Astroparticle Physics (JCAP) encompasses theoretical, observational and experimental areas as well as computation and simulation. The journal covers the latest developments in the theory of all fundamental interactions and their cosmological implications (e.g. M-theory and cosmology, brane cosmology). JCAP''s coverage also includes topics such as formation, dynamics and clustering of galaxies, pre-galactic star formation, x-ray astronomy, radio astronomy, gravitational lensing, active galactic nuclei, intergalactic and interstellar matter.