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Intensity mapping is now becoming a useful tool to study the large-scale structure of the universe through spatial variations in the integrated emission from galaxies and the intergalactic medium. We study intensity mapping of the H-alpha…

星系天体物理 · 物理学 2017-02-15 Yan Gong , Asantha Cooray , Marta B. Silva , Michael Zemcov , Chang Feng , Mario G. Santos , Olivier Dore , Xuelei Chen

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…

星系天体物理 · 物理学 2015-06-22 Bade D. Uzgil , James E. Aguirre , Charles M. Bradford , Adam Lidz

Intensity mapping (IM) is sensitive to the cumulative line emission of galaxies. As such it represents a promising technique for statistical studies of galaxies fainter than the limiting magnitude of traditional galaxy surveys. The strong…

宇宙学与河外天体物理 · 物理学 2016-09-21 Paolo Comaschi , Bin Yue , Andrea Ferrara

Line-intensity mapping (LIM) is an emerging approach to survey the Universe, using relatively low-aperture instruments to scan large portions of the sky and collect the total spectral-line emission from galaxies and the intergalactic…

宇宙学与河外天体物理 · 物理学 2023-02-01 José Luis Bernal , Ely D. Kovetz

Line intensity mapping (LIM) is an emerging technique for probing the aggregate emission of a spectral line from all sources, without requiring individual detections. Through the wavelength-redshift relation, one can map the line-of-sight…

宇宙学与河外天体物理 · 物理学 2025-10-10 Yun-Ting Cheng , Brandon S. Hensley , Thomas S. -Y. Lai

Line intensity mapping (LIM) proposes to efficiently observe distant faint galaxies and map the matter density field at high redshift. Building upon the formalism in the companion paper, we first highlight the degeneracies between cosmology…

宇宙学与河外天体物理 · 物理学 2021-06-29 Emmanuel Schaan , Martin White

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…

宇宙学与河外天体物理 · 物理学 2017-05-25 José Fonseca , Marta B. Silva , Mário G. Santos , Asantha Cooray

Future galaxy surveys will map the galaxy distribution in the redshift interval $0.5<z<2$ using near-infrared cameras and spectrographs. The primary science goal of such surveys is to constrain the nature of the dark energy by measuring the…

宇宙学与河外天体物理 · 物理学 2015-05-14 Alvaro Orsi , C. M. Baugh , C. G. Lacey , A. Cimatti , Y. Wang , G. Zamorani

Line intensity mapping (LIM) is an emerging technique in measuring galaxy evolution and the large-scale structure of the universe. LIM surveys measure the cumulative emission from all galaxies emitting a given line at a particular redshift,…

宇宙学与河外天体物理 · 物理学 2022-04-05 Trevor M. Oxholm

A new generation of cosmological experiments will spectroscopically detect the H$\alpha$ line from ELGs at optical/near-infrared frequencies. Other emission lines will also be present, which may come from the same H$\alpha$ sample or…

宇宙学与河外天体物理 · 物理学 2021-07-02 José Fonseca , Stefano Camera

Future galaxy redshift surveys aim to measure cosmological quantities from the galaxy power spectrum. A prime example is the detection of baryonic acoustic oscillations (BAOs), providing a standard ruler to measure the dark energy equation…

Line intensity mapping (LIM) is an emerging observational method to study the large-scale structure of the Universe and its evolution. LIM does not resolve individual sources but probes the fluctuations of integrated line emissions. A…

星系天体物理 · 物理学 2020-06-03 Kana Moriwaki , Nina Filippova , Masato Shirasaki , Naoki Yoshida

Line intensity mapping (LIM) provides a unique and powerful means to probe cosmic structures by measuring the aggregate line emission from all galaxies across redshift. The method is complementary to conventional galaxy redshift surveys…

Intensity mapping, which images a single spectral line from unresolved galaxies across cosmological volumes, is a promising technique for probing the early universe. Here we present predictions for the intensity map and power spectrum of…

宇宙学与河外天体物理 · 物理学 2016-02-03 Tony Y. Li , Risa H. Wechsler , Kiruthika Devaraj , Sarah E. Church

The technique of intensity mapping (IM) has emerged as a powerful tool to explore the universe at $z < 6$. IM measures the integrated emission from sources over a broad range of frequencies, unlocking significantly more information than…

宇宙学与河外天体物理 · 物理学 2019-11-01 Hamsa Padmanabhan

Line-Intensity Mapping (LIM) has emerged as a powerful technique for studying large-scale structure and the high-redshift universe, enabling three-dimensional maps of line emission across vast cosmological volumes. In this review, we…

宇宙学与河外天体物理 · 物理学 2026-02-04 Tzu-Ching Chang , Adam Lidz

We present a study of the cosmological Ly$\alpha$ emission signal at $z > 4$. Our goal is to predict the power spectrum of the spatial fluctuations that could be observed by an intensity mapping survey. The model uses the latest data from…

宇宙学与河外天体物理 · 物理学 2015-11-18 P. Comaschi , A. Ferrara

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…

宇宙学与河外天体物理 · 物理学 2015-06-17 Anthony Pullen , Olivier Dore , Jamie Bock

Euclid and the Roman Space Telescope (Roman) will soon use grism spectroscopy to detect millions of galaxies via H$\alpha$ and [O III] $\lambda 5007$ emission. To better constrain the expected galaxy counts from these instruments, we use a…

星系天体物理 · 物理学 2023-01-25 Gautam Nagaraj , Robin Ciardullo , William P. Bowman , Alex Lawson , Caryl Gronwall

Line-intensity mapping (LIM or IM) is an emerging field of observational work, with strong potential to fit into a larger effort to probe large-scale structure and small-scale astrophysical phenomena using multiple complementary tracers.…

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