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arXiv 2005.04730astro-ph.IM
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在DESI传统成像调查中发现新的强引力透镜

Discovering New Strong Gravitational Lenses in the DESI Legacy Imaging Surveys

X. Huang, C. Storfer, A. Gu, V. Ravi, A. Pilon, W. Sheu, R. Venguswamy, S. Banka, A. Dey, M. Landriau, D. Lang, A. Meisner, J. Moustakas, A. D. Myers, R. Sajith… 展开作者

X. Huang, C. Storfer, A. Gu, V. Ravi, A. Pilon, W. Sheu, R. Venguswamy, S. Banka, A. Dey, M. Landriau, D. Lang, A. Meisner, J. Moustakas, A. D. Myers, R. Sajith, E. F. Schlafly, D. J. Schlegel

摘要:

我们已经在暗能量光谱仪器遗留成像调查的数据发布8中进行了新的强引力透镜系统的搜索。我们使用深度残差神经网络,建立在Huang et al.(2020)之前的工作基础上。这些巡天图总共覆盖了北半球可见天空的大约三分之一,z波段AB星等达到~22.5。我们编译了一个训练样本,其中包括已知的透镜系统,以及非透镜的遗产调查和暗能量调查。在将我们训练好的神经网络应用于调查数据后,我们将以高于阈值的概率对图像进行视觉检查和排名。在这里,我们提出了1210个新的强透镜候选者。

英文摘要:

We have conducted a search for new strong gravitational lensing systems in the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys' Data Release 8. We use deep residual neural networks, building on previous work presented in Huang et al. (2020). These surveys together cover approximately one third of the sky visible from the northern hemisphere, reaching a z band AB magnitude of ~22.5. We compile a training sample that consists of known lensing systems as well as non-lenses in the Legacy Surveys and the Dark Energy Survey. After applying our trained neural networks to the survey data, we visually inspect and rank images with probabilities above a threshold. Here we present 1210 new strong lens candidates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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