Line-Intensity Mapping: 2017 Status Report
Abstract
Following the first two annual intensity mapping workshops at Stanford in March 2016 and Johns Hopkins in June 2017, we report on the recent advances in theory, instrumentation and observation that were presented in these meetings and some of the opportunities and challenges that were identified looking forward. With preliminary detections of CO, [CII], Lya and low-redshift 21cm, and a host of experiments set to go online in the next few years, the field is rapidly progressing on all fronts, with great anticipation for a flood of new exciting results. This current snapshot provides an efficient reference for experts in related fields and a useful resource for nonspecialists. We begin by introducing the concept of line-intensity mapping and then discuss the broad array of science goals that will be enabled, ranging from the history of star formation, reionization and galaxy evolution to measuring baryon acoustic oscillations at high redshift and constraining theories of dark matter, modified gravity and dark energy. After reviewing the first detections reported to date, we survey the experimental landscape, presenting the parameters and capabilities of relevant instruments such as COMAP, mmIMe, AIM-CO, CCAT-p, TIME, CONCERTO, CHIME, HIRAX, HERA, STARFIRE, MeerKAT/SKA and SPHEREx. Finally, we describe recent theoretical advances: different approaches to modeling line luminosity functions, several techniques to separate the desired signal from foregrounds, statistical methods to analyze the data, and frameworks to generate realistic intensity map simulations.
Cite
@article{arxiv.1709.09066,
title = {Line-Intensity Mapping: 2017 Status Report},
author = {Ely D. Kovetz and Marco P. Viero and Adam Lidz and Laura Newburgh and Mubdi Rahman and Eric Switzer and Marc Kamionkowski and James Aguirre and Marcelo Alvarez and James Bock and J. Richard Bond and Goeffry Bower and C. Matt Bradford and Patrick C. Breysse and Philip Bull and Tzu-Ching Chang and Yun-Ting Cheng and Dongwoo Chung and Kieran Cleary and Asantha Corray and Abigail Crites and Rupert Croft and Olivier Doré and Michael Eastwood and Andrea Ferrara and José Fonseca and Daniel Jacobs and Garrett K. Keating and Guilaine Lagache and Gunjan Lakhlani and Adrian Liu and Kavilan Moodley and Norm Murray and Aurélie Pénin and Gergö Popping and Anthony Pullen and Dominik Reichers and Shun Saito and Ben Saliwanchik and Mario Santos and Rachel Somerville and Gordon Stacey and George Stein and Francesco Villaescusa-Navarro and Eli Visbal and Amanda Weltman and Laura Wolz and Micheal Zemcov},
journal= {arXiv preprint arXiv:1709.09066},
year = {2017}
}
Comments
99 pages, 48 figures; Endorsement and any comments welcome; To be submitted to Physics Reports