暗能量巡天的 Ia 型超新星弱引力透镜效应
宇宙学与河外天体物理
2020-07-17 v1
摘要
我们考虑弱引力透镜对暗能量巡天（DES）第 1 至 3 年 196 颗经光谱确认的 Ia 型超新星（SNe Ia）观测的影响。我们同时测量了角关联函数与由弱透镜引起的非高斯偏度。该方法的优点是对 SNe Ia 星等的本征弥散不敏感。我们将这两种效应的幅度建模为 的函数，得到 。我们还将方法应用于联合光变曲线分析（JLA）的 488 颗超新星子样本（选取以匹配本工作所用红移范围），得到 。DES-SN 与数量更多的 JLA 超新星所得 的不确定性相当，凸显了 DES-SN 样本同质性的优势，以及定标与数据分析的改进。
引用
@article{arxiv.2007.07956,
title = {Weak Lensing of Type Ia Supernovae from the Dark Energy Survey},
author = {E. Macaulay and D. Bacon and R. C. Nichol and T. M. Davis and J. Elvin-Poole and D. Brout and D. Carollo and K. Glazebrook and S. R. Hinton and G. F. Lewis and C. Lidman and A. Möller and M. Sako and D. Scolnic and M. Smith and N. E. Sommer and B. E. Tucker and T. M. C. Abbott and M. Aguena and J. Annis and S. Avila and E. Bertin and S. Bhargava and D. Brooks and D. L. Burke and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and F. J. Castander and M. Costanzi and L. N. da Costa and S. Desai and H. T. Diehl and P. Doel and B. Flaugher and R. J. Foley and J. García-Bellido and E. Gaztanaga and D. W. Gerdes and D. Gruen and R. A. Gruendl and J. Gschwend and G. Gutierrez and D. L. Hollowood and K. Honscheid and D. Huterer and D. J. James and K. Kuehn and N. Kuropatkin and O. Lahav and M. Lima and M. A. G. Maia and J. L. Marshall and P. Melchior and F. Menanteau and R. Miquel and A. Palmese and A. A. Plazas and A. K. Romer and A. Roodman and E. Sanchez and V. Scarpine and M. Schubnell and S. Serrano and I. Sevilla-Noarbe and M. Soares-Santos and E. Suchyta and M. E. C. Swanson and G. Tarle and T. N. Varga and A. R. Walker and J. Weller},
journal= {arXiv preprint arXiv:2007.07956},
year = {2020}
}
备注
10 pages, 7 figures, MNRAS