论文标题
在研究良好的星系簇中，用Vera C. Rubin天文台上强烈镜头的超新星
Strongly Lensed Supernovae in Well-Studied Galaxy Clusters with the Vera C. Rubin Observatory
论文作者
论文摘要
星系簇的强烈镜头可用于显着扩大调查范围，从而可以观察到放大的高红移超新星，否则将无法被发现。强烈的镜头还可以提供簇后面的星系的多个图像。由于具有标准化的亮度，因此检测强烈的IA型超新星（SNE IA）的检测特别有用，因为它们可用于改善群集镜头模型或独立测量宇宙学参数。鉴于其具有不同方法的测量值的差异，宇宙学参数是哈勃常数。在这里，我们探讨了Vera C. Rubin C. Rubin天文台遗产对空间和时间（LSST）的可行性，该调查在五个Galaxy簇（Abell 1689和Hubble Frontier Fields群集）的田野中检测出强镜SNE的可行性。考虑到由五个集群字段中的268个单个多个图像组成的88个系统，我们发现LSST对41（23）个星系图像中的SNE〜IA（SNE〜IIP）爆炸敏感。这些星系的红移范围在$ 1.01 <z <3.05 $之间。在运营的10年中，LSST预计将检测到$ 0.2 \ pm0.1 $ sn〜ia和$ 0.9 \ pm0.3 $ Core Collapse Sne。但是，正如LSST会观察到许多更大的星系簇一样，期望可能会更高。我们强调了具有LSST检测到的强镜SNE的光度和光谱随访的其他观测程序的重要性。
Strong lensing by galaxy clusters can be used to significantly expand the survey reach, thus allowing observation of magnified high-redshift supernovae that otherwise would remain undetected. Strong lensing can also provide multiple images of the galaxies that lie behind the clusters. Detection of strongly lensed Type Ia supernovae (SNe Ia) is especially useful because of their standardizable brightness, as they can be used to improve either cluster lensing models or independent measurements of cosmological parameters. The cosmological parameter, the Hubble constant, is of particular interest given the discrepancy regarding its value from measurements with different approaches. Here, we explore the feasibility of the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) of detecting strongly lensed SNe in the field of five galaxy clusters (Abell 1689 and Hubble Frontier Fields clusters) that have well-studied lensing models. Considering the 88 systems composed of 268 individual multiple images in the five cluster fields, we find that the LSST will be sensitive to SNe~Ia (SNe~IIP) exploding in 41 (23) galaxy images. The range of redshift of these galaxies is between $1.01 < z < 3.05$. During its 10 years of operation, LSST is expected to detect $0.2\pm0.1$ SN~Ia and $0.9\pm0.3$ core collapse SNe. However, as LSST will observe many more massive galaxy clusters, it is likely that the expectations are higher. We stress the importance of having an additional observing program for photometric and spectroscopic follow-up of the strongly lensed SNe detected by LSST.
