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Line-Intensity Mapping: 2017 Status Report

Ely D. Kovetz 1 Marco P. Viero 2 Adam Lidz 3 Laura Newburgh 4 Mubdi Rahman 1 E. Switzer 5 Marc Kamionkowski 1 James Aguirre 3 Marcelo Alvarez 6 James J. Bock 7 J. Richard Bond 6 Geoffrey Bower 8 C. Matt Bradford 9 Patrick C. Breysse 6 Philip Bull 9 Tzu-Ching Chang 9 Yun-Ting Cheng 7 Dongwoo Chung 2 Kieran Cleary 7 Asantha Cooray 2 Abigail Crites 7 Rupert Croft 10 Olivier Doré 9, 7 Michael Eastwood 7 Andrea Ferrara 11 José Fonseca 12 Daniel Jacobs 13 Garrett K. Keating 14 Guilaine Lagache 15 Gunjan Lakhlani 6 Adrian Liu 16, 17 Kavilan Moodley 18 Norman Murray 6 Aurelie Pénin 18 Gergoe Popping 19 Anthony Pullen 20 Dominik Reichers 21 Shun Saito 22 B. Saliwanchik 18 Mario Santos 12, 23 Rachel Somerville 24 Gordon Stacey 21 George Stein 6 Francisco Villaescusa-Navarro 25 Eli Visbal Amanda Weltman 26 Laura Wolz 27 Michael Zemcov 28
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.
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  • HAL Id : hal-02176413, version 1
  • ARXIV : 1709.09066

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Ely D. Kovetz, Marco P. Viero, Adam Lidz, Laura Newburgh, Mubdi Rahman, et al.. Line-Intensity Mapping: 2017 Status Report. 2017. ⟨hal-02176413⟩

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