利用CORE探索宇宙起源：CMB的引力透镜
宇宙学与河外天体物理
2019-08-13 v1
摘要
CMB的透镜效应如今已成为在大范围红移上探测大尺度成团性的成熟手段。通过利用透镜在CMB偏振中的非高斯印记，CORE任务能够生成几乎全天的透镜偏转的洁净图。该图中高信噪比模式的数量将超过当前CMB透镜图40倍，并且该测量在所有线性理论成立的尺度上受样本方差限制。在此，我们总结这一任务产物并讨论其将赋能的科学。例如，结合CORE透镜与CMB两点信息以及同时期的BAO测量，中微子总质量将以17 meV的精度确定，比中微子振荡所允许的最小总质量小三倍。在利用CORE搜寻原初引力波的B模式偏振时，透镜诱导的B模式将压倒仪器噪声，限制对引力波功率谱振幅的约束。通过CORE重建的透镜，可以在内部“去透镜”观测到的偏振，将透镜B模式功率降低60%。结合CORE的透镜与CIB测量可改善至70%，与不去透镜相比（在零假设下）将引力波振幅的误差减小2.5倍。CORE的透镜测量将允许对其将发现的40000个星系团的晕质量进行校准，其约束由基于洁净偏振的估计量主导。CORE凭借其19个频率通道能够从CMB图中精确去除银河系辐射。我们给出初步结果，表明残余银河系前景污染不会成为CORE透镜功率谱测量偏差的显著来源。[删节]
引用
@article{arxiv.1707.02259,
title = {Exploring cosmic origins with CORE: gravitational lensing of the CMB},
author = {Anthony Challinor and Rupert Allison and Julien Carron and Josquin Errard and Stephen Feeney and Thomas Kitching and Julien Lesgourgues and Antony Lewis and Íñigo Zubeldía and Ana Achucarro and Peter Ade and Mark Ashdown and Mario Ballardini and A. J. Banday and Ranajoy Banerji and James Bartlett and Nicola Bartolo and Soumen Basak and Daniel Baumann and Marco Bersanelli and Anna Bonaldi and Matteo Bonato and Julian Borrill and François Bouchet and François Boulanger and Thejs Brinckmann and Martin Bucher and Carlo Burigana and Alessandro Buzzelli and Zhen-Yi Cai and Martino Calvo and Carla-Sofia Carvalho and Gabriella Castellano and Jens Chluba and Sebastien Clesse and Ivan Colantoni and Alessandro Coppolecchia and Martin Crook and Giuseppe d'Alessandro and Paolo de Bernardis and Giancarlo de Gasperis and Gianfranco De Zotti and Jacques Delabrouille and Eleonora Di Valentino and Jose-Maria Diego and Raul Fernandez-Cobos and Simone Ferraro and Fabio Finelli and Francesco Forastieri and Silvia Galli and Ricardo Genova-Santos and Martina Gerbino and Joaquin González-Nuevo and Sebastian Grandis and Joshua Greenslade and Steffen Hagstotz and Shaul Hanany and Will Handley and Carlos Hernandez-Monteagudo and Carlos Hervías-Caimapo and Matthew Hills and Eric Hivon and Kimmo Kiiveri and Ted Kisner and Martin Kunz and Hannu Kurki-Suonio and Luca Lamagna and Anthony Lasenby and Massimiliano Lattanzi and Michele Liguori and Valtteri Lindholm and Marcos López-Caniego and Gemma Luzzi and Bruno Maffei and Enrique Martinez-González and C. J. A. P. Martins and Silvia Masi and Darragh McCarthy and Alessandro Melchiorri and Jean-Baptiste Melin and Diego Molinari and Alessandro Monfardini and Paolo Natoli and Mattia Negrello and Alessio Notari and Alessandro Paiella and Daniela Paoletti and Guillaume Patanchon and Michel Piat and Giampaolo Pisano and Linda Polastri and Gianluca Polenta and Agnieszka Pollo and Vivian Poulin and Miguel Quartin and Mathieu Remazeilles and Matthieu Roman and Jose-Alberto Rubino-Martin and Laura Salvati and Andrea Tartari and Maurizio Tomasi and Denis Tramonte and Neil Trappe and Tiziana Trombetti and Carole Tucker and Jussi Valiviita and Rien Van de Weijgaert and Bartjan van Tent and Vincent Vennin and Patricio Vielva and Nicola Vittorio and Karl Young and Mario Zannoni},
journal= {arXiv preprint arXiv:1707.02259},
year = {2019}
}
备注
44 pages, 12 figures