欧几里亚快速数据发布 (Q1)。首个强引力透镜星系簇目录
宇宙学与河外天体物理
2025-03-20 v1 星系天体物理
摘要
我们报告了在欧几里亚快速发布1号观测中（覆盖）识别出的首个强引力透镜星系簇目录。该目录是对1260个星系簇场进行视觉检查后得到的结果。每个星系簇根据其识别出的强引力特征的数量和合理性，给出概率。具体而言，我们识别出83个的引力透镜，其中14个，并清晰显示出安全的强引力特征，如巨大的切向和径向弧线，以及多个图像。考虑到测得的引力透镜星系簇数密度，约为时每平方度0.3个，预计欧几里亚整个任务期间将看到超过4500个强引力透镜簇。值得注意的是，仅有三个被之前的空间观测识别过的簇级透镜。因此，欧几里亚为剩余80个星系簇透镜（包括最高概率者）提供了首次高分辨率成像。所识别的强引力特征将用于训练深度学习模型，自动识别欧几里亚观测中的引力弧线和多个图像。本研究确认了欧几里亚在发现新强引力透镜簇方面的巨大潜力，这将开启关于暗物质、暗能量及高红移宇宙研究的激动人心的新机遇。
引用
@article{arxiv.2503.15330,
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journal= {arXiv preprint arXiv:2503.15330},
year = {2025}
}
备注
Paper submitted as part of the A&A Special Issue `Euclid Quick Data Release (Q1)', 16 pages, 10 figures