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Line intensity mapping is emerging as a novel method that can measure the collective intensity fluctuations of atomic/molecular line emission from distant galaxies. Several observational programs with various wavelengths are ongoing and…

Astrophysics of Galaxies · Physics 2021-12-15 Kana Moriwaki , Naoki Yoshida

This paper outlines the science case for line-intensity mapping with a space-borne instrument targeting the sub-millimeter (microwaves) to the far-infrared (FIR) wavelength range. Our goal is to observe and characterize the large-scale…

We present a systematic study of the intensity mapping technique using updated models for the different emission lines from galaxies and identify which ones are more promising for cosmological studies of the post reionization epoch. We…

Cosmology and Nongalactic Astrophysics · Physics 2017-05-25 José Fonseca , Marta B. Silva , Mário G. Santos , Asantha Cooray

Intensity mapping -- the large-scale mapping of selected spectral lines without resolving individual sources -- is quickly emerging as an efficient way to conduct large cosmological surveys. Multiple surveys covering a variety of lines…

Cosmology and Nongalactic Astrophysics · Physics 2025-01-22 Hannah Fronenberg , Adrian Liu

Intensity mapping has attracted significant interest as an approach to measure the properties of the interstellar medium in typical galaxies at high redshift. Intensity mapping measures the statistics of surface brightness as a function of…

Cosmology and Nongalactic Astrophysics · Physics 2019-02-20 E. R. Switzer , C. J. Anderson , A. R. Pullen , S. Yang

Infrared fine-structure emission lines from trace metals are powerful diagnostics of the interstellar medium in galaxies. We explore the possibility of studying the redshifted far-IR fine-structure line emission using the three-dimensional…

Astrophysics of Galaxies · Physics 2015-06-22 Bade D. Uzgil , James E. Aguirre , Charles M. Bradford , Adam Lidz

The Line Emission Mapper (LEM) is an X-ray Probe for the 2030s that will answer the outstanding questions of the Universe's structure formation. It will also provide transformative new observing capabilities for every area of astrophysics,…

Instrumentation and Methods for Astrophysics · Physics 2023-04-14 Ralph Kraft , Maxim Markevitch , Caroline Kilbourne , Joseph S. Adams , Hiroki Akamatsu , Mohammadreza Ayromlou , Simon R. Bandler , Marco Barbera , Douglas A. Bennett , Anil Bhardwaj , Veronica Biffi , Dennis Bodewits , Akos Bogdan , Massimiliano Bonamente , Stefano Borgani , Graziella Branduardi-Raymont , Joel N. Bregman , Joseph N. Burchett , Jenna Cann , Jenny Carter , Priyanka Chakraborty , Eugene Churazov , Robert A. Crain , Renata Cumbee , Romeel Dave , Michael DiPirro , Klaus Dolag , W. Bertrand Doriese , Jeremy Drake , William Dunn , Megan Eckart , Dominique Eckert , Stefano Ettori , William Forman , Massimiliano Galeazzi , Amy Gall , Efrain Gatuzz , Natalie Hell , Edmund Hodges-Kluck , Caitriona Jackman , Amir Jahromi , Fred Jennings , Christine Jones , Philip Kaaret , Patrick J. Kavanagh , Richard L. Kelley , Ildar Khabibullin , Chang-Goo Kim , Dimitra Koutroumpa , Orsolya Kovacs , K. D. Kuntz , Erwin Lau , Shiu-Hang Lee , Maurice Leutenegger , Sheng-Chieh Lin , Carey Lisse , Ugo Lo Cicero , Lorenzo Lovisari , Dan McCammon , Sean McEntee , Francois Mernier , Eric D. Miller , Daisuke Nagai , Michela Negro , Dylan Nelson , Jan-Uwe Ness , Paul Nulsen , Anna Ogorzalek , Benjamin D. Oppenheimer , Lidia Oskinova , Daniel Patnaude , Ryan W. Pfeifle , Annalisa Pillepich , Paul Plucinsky , David Pooley , Frederick S. Porter , Scott Randall , Elena Rasia , John Raymond , Mateusz Ruszkowski , Kazuhiro Sakai , Arnab Sarkar , Manami Sasaki , Kosuke Sato , Gerrit Schellenberger , Joop Schaye , Aurora Simionescu , Stephen J. Smith , James F. Steiner , Jonathan Stern , Yuanyuan Su , Ming Sun , Grant Tremblay , Nhut Truong , James Tutt , Eugenio Ursino , Sylvain Veilleux , Alexey Vikhlinin , Stephan Vladutescu-Zopp , Mark Vogelsberger , Stephen A. Walker , Kimberly Weaver , Dale M. Weigt , Jessica Werk , Norbert Werner , Scott J. Wolk , Congyao Zhang , William W. Zhang , Irina Zhuravleva , John ZuHone

HI intensity mapping (IM) is a novel technique capable of mapping the large-scale structure of the Universe in three dimensions and delivering exquisite constraints on cosmology, by using HI as a biased tracer of the dark matter density…

Sub-millimeter emission lines produced by the interstellar medium (ISM) are strong tracers of star formation and are some of the main targets of line intensity mapping (LIM) surveys. In this work we present an empirical multi-line emission…

The H-alpha line emission is an important probe for a number of fundamental quantities in galaxies, including their number density, star formation rate (SFR) and overall gas content. A new generation of low-resolution intensity mapping…

Astrophysics of Galaxies · Physics 2022-06-15 Marta B. Silva , Saleem Zaroubi , Robin Kooistra , Asantha Cooray

The EXperiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM) is a balloon-borne cryogenic telescope that will survey the spectrum of diffuse emission from both the Milky Way and the cosmic web to probe star formation, the…

Line-intensity mapping of the 21cm line is a powerful probe of large scale structure at z<6, tracing large-scale structure via neutral hydrogen content that is found within galaxies. In principle, it enables cost-efficient surveys of the…

Cosmology and Nongalactic Astrophysics · Physics 2020-05-20 Adrian Liu , Simon Foreman , Hamsa Padmanabhan , H. Cynthia Chiang , Seth Siegel , Dallas Wulf , Jonathan Sievers , Matt Dobbs , Keith Vanderlinde

Line-intensity mapping (LIM) experiments coming online now will survey fluctuations in aggregate emission in the [C II] ionized carbon line from galaxies at the end of reionization. Experimental progress must be matched by theoretical…

Cosmology and Nongalactic Astrophysics · Physics 2024-06-18 Patrick Horlaville , Dongwoo T. Chung , J. Richard Bond , Lichen Liang

The JWST and ALMA have detected emission lines from the ionized interstellar medium (ISM) in some of the first galaxies at $z \gtrsim 6$. These measurements present an opportunity to better understand galaxy assembly histories and may allow…

We present the Simple Intensity Map Producer for Line Emission (SIMPLE), a public code for quickly simulating mock line-intensity maps, and an analytical framework for modeling intensity maps including observational effects. SIMPLE can be…

Cosmology and Nongalactic Astrophysics · Physics 2025-05-06 Maja Lujan Niemeyer , José Luis Bernal , Eiichiro Komatsu

The EXperiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM) is a cryogenic balloon-borne instrument that will survey galaxy and star formation history over cosmological time scales. Rather than identifying individual objects,…

Intermediate redshifts between galaxy surveys and the cosmic microwave background (CMB) remain unexplored territory. Line intensity mapping (LIM) offers a way to probe the $z\gtrsim 1$ Universe, including the epoch of reionization and the…

Cosmology and Nongalactic Astrophysics · Physics 2022-04-27 Abhishek S. Maniyar , Emmanuel Schaan , Anthony R. Pullen

We present a quantitative model of Lyman-alpha (Ly-alpha) emission throughout cosmic history and determine the prospects for intensity mapping of spatial fluctuations in the Ly-alpha signal. Since i) our model assumes at z>6 the minimum…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Anthony Pullen , Olivier Dore , Jamie Bock

Line intensity mapping experiments seek to trace large scale structure by measuring the spatial fluctuations in the combined emission, in some convenient spectral line, from individually unresolved galaxies. An important systematic concern…

Cosmology and Nongalactic Astrophysics · Physics 2016-07-20 Adam Lidz , Jessie Taylor

Line intensity mapping (LIM) experiments probing the nearby universe can expect a considerable amount of cosmic infrared background (CIB) contiuum emission coming from near and far-infrared galaxies. For the purpose of using the LIM data to…

Cosmology and Nongalactic Astrophysics · Physics 2023-07-26 Zilu Zhou , Abhishek S. Maniyar , Anthony R. Pullen