利用SPT和DES第一年数据测量CMB星系团透镜效应
宇宙学与河外天体物理
2018-02-28 v2
摘要
星系团通过引力透镜作用于宇宙微波背景（CMB）辐射，在角分尺度上于 CMB 中留下独特的印记。测量这种效应为约束星系团质量，尤其是高红移星系团的质量，提供了一种有前景的方法。我们利用南极望远镜（SPT）的 Sunyaev-Zel'dovich（SZ）巡天获得的 CMB 图，测量暗能量巡天（DES）第一年光学成像中识别的星系团周围的 CMB 透镜信号。本分析所用的星系团星表包含 3697 个成员，平均红移为 。我们以 的显著性探测到星系团对 CMB 的透镜效应。利用测得的透镜信号，我们将星系团质量与光学富度之间关系的振幅约束到约 的精度，发现与近期通过星系透镜获得的约束结果吻合良好。误差预算以统计噪声为主，但也包含来自热 SZ 效应和星系团中心偏移的系统偏差的显著贡献。
引用
@article{arxiv.1708.01360,
title = {A Measurement of CMB Cluster Lensing with SPT and DES Year 1 Data},
author = {E. J. Baxter and S. Raghunathan and T. M. Crawford and P. Fosalba and Z. Hou and G. P. Holder and Y. Omori and S. Patil and E. Rozo and T. M. C. Abbott and J. Annis and K. Aylor and A. Benoit-Lévy and B. A. Benson and E. Bertin and L. Bleem and E. Buckley-Geer and D. L. Burke and J. Carlstrom and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and C. L. Chang and H-M. Cho and A. T. Crites and M. Crocce and C. E. Cunha and L. N. da Costa and C. B. D'Andrea and C. Davis and T. de Haan and S. Desai and M. A. Dobbs and S. Dodelson and J. P. Dietrich and P. Doel and A. Drlica-Wagner and J. Estrada and W. B. Everett and A. Fausti Neto and B. Flaugher and J. Frieman and J. García-Bellido and E. M. George and E. Gaztanaga and T. Giannantonio and D. Gruen and R. A. Gruendl and J. Gschwend and G. Gutierrez and N. W. Halverson and N. L. Harrington and W. G. Hartley and W. L. Holzapfel and K. Honscheid and J. D. Hrubes and B. Jain and D. J. James and M. Jarvis and T. Jeltema and L. Knox and E. Krause and K. Kuehn and S. Kuhlmann and N. Kuropatkin and O. Lahav and A. T. Lee and E. M. Leitch and T. S. Li and M. Lima and D. Luong-Van and A. Manzotti and M. March and D. P. Marrone and J. L. Marshall and P. Martini and J. J. McMahon and P. Melchior and F. Menanteau and S. S. Meyer and C. J. Miller and R. Miquel and L. M. Mocanu and J. J. Mohr and T. Natoli and B. Nord and R. L. C. Ogando and S. Padin and A. A. Plazas and C. Pryke and D. Rapetti and C. L. Reichardt and A. K. Romer and A. Roodman and J. E. Ruhl and E. Rykoff and M. Sako and E. Sanchez and J. T. Sayre and V. Scarpine and K. K. Schaffer and R. Schindler and M. Schubnell and I. Sevilla-Noarbe and E. Shirokoff and M. Smith and R. C. Smith and M. Soares-Santos and F. Z. Staniszewski and A. Stark and K. Story and E. Suchyta and G. Tarle and D. Thomas and M. A. Troxel and K. Vanderlinde and J. D. Vieira and A. R. Walker and R. Williamson and Y. Zhang and J. Zuntz},
journal= {arXiv preprint arXiv:1708.01360},
year = {2018}
}
备注
16 pages, 5 figures; replaced to match version accepted by MNRAS