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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…

星系天体物理 · 物理学 2022-06-15 Marta B. Silva , Saleem Zaroubi , Robin Kooistra , Asantha Cooray

The Epoch of Reionization (EoR) remains a poorly understood cosmic era for the most part. Yet, efforts are still going on to probe and understand this epoch. We present a review of the latest developments in the techniques (especially…

宇宙学与河外天体物理 · 物理学 2024-08-26 Chandra Shekhar Murmu , Raghunath Ghara , Suman Majumdar , Kanan K. Datta

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…

宇宙学与河外天体物理 · 物理学 2016-07-20 Adam Lidz , Jessie Taylor

We present the science enabled by cross-correlations of the SKA1-LOW 21-cm EoR surveys with other line mapping programs. In particular, we identify and investigate potential synergies with planned programs, such as the line intensity…

宇宙学与河外天体物理 · 物理学 2019-08-14 Tzu-Ching Chang , Yan Gong , Mario Santos , Marta Silva , James Aguirre , Olivier Doré , Jonathan Pritchard

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…

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

In the next few years, intensity-mapping surveys that target lines such as CO, Ly$\alpha$, and CII stand to provide powerful probes of high-redshift astrophysics. However, these line emissions are highly non-Gaussian, and so the typical…

宇宙学与河外天体物理 · 物理学 2017-02-01 Patrick C. Breysse , Ely D. Kovetz , Peter S. Behroozi , Liang Dai , Marc Kamionkowski

We use numerical simulations of cosmic reionization and radiative processes related to the HI 21 cm emission line to produce synthetic radio maps as seen by next generation radio telescopes that will operate at low radio frequencies (e.g.…

天体物理学 · 物理学 2009-11-11 M. Valdes , B. Ciardi , A. Ferrara , M. Johnston-Hollitt , H. Rottgering

The evolution of large-scale structure, galaxies and the intergalactic medium (IGM) during the Epoch of Reionization (EoR) can be probed by upcoming Line Intensity Mapping (LIM) experiments, which sample in redshift and direction without…

Intensity mapping of the HI 21 cm line and the CO 2.61 mm line from the epoch of reionization has emerged as powerful, complementary, probes of the high-redshift Universe. However, both maps and their cross-correlation are dominated by…

宇宙学与河外天体物理 · 物理学 2021-01-11 Meng Zhou , Jianrong Tan , Yi Mao

Line-intensity mapping (LIM) is quickly attracting attention as an alternative technique to probe large-scale structure and galaxy formation and evolution at high redshift. LIM one-point statistics are motivated because they provide access…

宇宙学与河外天体物理 · 物理学 2024-03-06 José Luis Bernal

Intensity mapping of multiple emission lines is emerging as a new branch to astronomy, to probe both properties of ionizing sources and the medium between, in particular the intergalactic medium. For Epoch of Reionization (EoR) studies,…

宇宙学与河外天体物理 · 物理学 2021-08-03 Caroline Heneka , Asantha Cooray

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…

宇宙学与河外天体物理 · 物理学 2019-02-20 E. R. Switzer , C. J. Anderson , A. R. Pullen , S. Yang

We consider the potential for line intensity mapping (LIM) of the rotational CO(1-0), CO(2-1) and CO(3-2) transitions to detect deviations from General Relativity from $0 < z < 3$ within the framework of a very general class of modified…

宇宙学与河外天体物理 · 物理学 2023-05-31 Bryan R. Scott , Kirit S. Karkare , Simeon Bird

We forecast the ability of future-generation experiments to detect the fine-structure lines of the carbon and oxygen ions, [CII] and [OIII] in intensity mapping (IM) from the Epoch of Reionization ($z \sim 6-8$). Combining the latest…

星系天体物理 · 物理学 2022-08-03 Hamsa Padmanabhan , Patrick Breysse , Adam Lidz , Eric R. Switzer

The intensity mapping of the [CII] 158um line redshifted to the sub-mm window is a promising probe of the z>4 star formation and its spatial distribution into the large-scale structure. To prepare the first-generation experiments (e.g.,…

Line intensity mapping (LIM) promises to probe previously inaccessible corners of the faint and high-redshift universe. However, confusion with bright foregrounds is a major challenge for current-era pathfinder LIM experiments.…

宇宙学与河外天体物理 · 物理学 2026-01-16 Delon Shen , Nickolas Kokron , Emmanuel Schaan

Rotational transition lines of CO are one of the major tracers used to study star forming regions and Galactic structures. A large number of observations of CO rotational lines are covering the galactic plane, recently the $Planck$…

天体物理仪器与方法 · 物理学 2019-03-29 G. Hurier