阿塔卡马宇宙学望远镜:宇宙双折射约束
宇宙学与河外天体物理
2020-04-22 v2 高能物理 - 实验
高能物理 - 唯象学
摘要
我们利用阿塔卡马宇宙学望远镜两个观测季、覆盖 平方度天空的数据,给出了宇宙微波背景偏振各向异性双折射的新约束。使用曲面二次估计量测量的双折射功率谱与零一致。我们的结果在 角分到 度的一系列角尺度上提供了当前最严格的双折射约束。我们将先前对尺度不变双折射功率谱振幅的上限提高了 到 倍。假设暴胀期间存在近无质量轴子场,我们的结果等价于对轴子与光子之间 Chern-Simons 耦合常数 的 上限,其中 为暴胀哈勃尺度。
引用
@article{arxiv.2001.10465,
title = {The Atacama Cosmology Telescope: Constraints on Cosmic Birefringence},
author = {Toshiya Namikawa and Yilun Guan and Omar Darwish and Blake D. Sherwin and Simone Aiola and Nicholas Battaglia and James A. Beall and Daniel T. Becker and J. Richard Bond and Erminia Calabrese and Grace E. Chesmore and Steve K. Choi and Mark J. Devlin and Joanna Dunkley and Rolando Dünner and Anna E. Fox and Patricio A. Gallardo and Vera Gluscevic and Dongwon Han and Matthew Hasselfield and Gene C. Hilton and Adam D. Hincks and Renée Hložek and Johannes Hubmayr and Kevin Huffenberger and John P. Hughes and Brian J. Koopman and Arthur Kosowsky and Thibaut Louis and Marius Lungu and Amanda MacInnis and Mathew S. Madhavacheril and Maya Mallaby-Kay and Loïc Maurin and Jeffrey McMahon and Kavilan Moodley and Sigurd Naess and Federico Nati and Laura B. Newburgh and John P. Nibarger and Michael D. Niemack and Lyman A. Page and Frank J. Qu and Naomi Robertson and Alessandro Schillaci and Neelima Sehgal and Cristóbal Sifón and Sara M. Simon and David N. Spergel and Suzanne T. Staggs and Emilie R. Storer and Alexander van Engelen and Jeff van Lanen and Edward J. Wollack},
journal= {arXiv preprint arXiv:2001.10465},
year = {2020}
}
备注
18 pages, 3 figures, Accepted for publication in PRD