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In the near future galaxy surveys will target Lyman alpha emitting galaxies (LAEs) to unveil the nature of the dark energy. It has been suggested that the observability of LAEs is coupled to the large scale properties of the intergalactic…

Cosmology and Nongalactic Astrophysics · Physics 2020-01-27 S. Gurung-Lopez , Alvaro A. Orsi , Silvia Bonoli , Nelson Padilla , Cedric G. Lacey , Carlton M. Baugh

We combine a cosmological reionization simulation with box size of 100Mpc/h on a side and a Monte Carlo Lyman-alpha (Lya) radiative transfer code to model Lyman Alpha Emitters (LAEs) at z~5.7. The model introduces Lya radiative transfer as…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Zheng Zheng , Renyue Cen , Hy Trac , Jordi Miralda-Escude

We present a new theoretical model for the luminosity functions (LFs) of Lyman alpha (Lya) emitting galaxies in the framework of hierarchical galaxy formation. We extend a semi-analytic model of galaxy formation that reproduces a number of…

Astrophysics · Physics 2009-11-13 Masakazu A. R. Kobayashi , Tomonori Totani , Masahiro Nagashima

Large surveys for Lyman-alpha emitting (LAE) galaxies have been proposed as a new method for measuring clustering of the galaxy population at high redshift with the goal of determining cosmological parameters. However, Lyman-alpha radiative…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Bradley Greig , Eiichiro Komatsu , J. Stuart B. Wyithe

Lyman-alpha (Lya) photons that escape the interstellar medium of star-forming galaxies may be resonantly scattered by neutral hydrogen atoms in the circumgalactic and intergalactic media, thereby increasing the angular extent of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Zheng Zheng , Renyue Cen , David Weinberg , Hy Trac , Jordi Miralda-Escude

We show that observations of high-redshift Ly-alpha emitters (LAEs) have the potential to provide definitive evidence for reionization in the near future. Using 200 Mpc radiative transfer simulations, we calculate the effect that patchy…

Astrophysics · Physics 2009-11-13 Matthew McQuinn , Lars Hernquist , Matias Zaldarriaga , Suvendra Dutta

Lyman-$\alpha$ emitters (LAEs) are a promising probe of the large-scale structure at high redshift, $z\gtrsim 2$. In particular, the Hobby-Eberly Telescope Dark Energy Experiment aims at observing LAEs at 1.9 $<z<$ 3.5 to measure the Baryon…

Astrophysics of Galaxies · Physics 2018-06-26 Christoph Behrens , Chris Byrohl , Shun Saito , Jens C. Niemeyer

[abridged] Aims. The aim of this paper is to assess the impact of the interstellar medium (ISM) physics on Lyman-alpha (Lya) radiation transfer and to quantify how galaxy orientation with respect to the line of sight alters observational…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Anne Verhamme , Yohan Dubois , Jeremy Blaizot , Thibault Garel , Roland Bacon , Julien Devriendt , Bruno Guiderdoni , Adrianne Slyz

We present an empirical yet physically motivated simulation of realistic Lyman-$\alpha$ emitters (LAEs) at $z\sim2-3$, crucial for ongoing and forthcoming cosmological LAE surveys. We combine an empirical $\mathtt{UniverseMachine}$…

Astrophysics of Galaxies · Physics 2025-12-01 Hasti Khoraminezhad , Shun Saito , Max Gronke , Chris Byrohl

Lyman Alpha Emitters (LAEs) are star-forming galaxies that efficiently probe the spatial distribution of galaxies in the high redshift universe. The spatial clustering of LAEs reflects the properties of their individual host dark matter…

We measure the clustering of Lyman Alpha Emitting galaxies (LAEs) selected from the One-hundred-square-degree DECam Imaging in Narrowbands (ODIN) survey, with spectroscopic follow-up from Dark Energy Spectroscopic Instrument (DESI). We use…

Lyman-{\alpha} emitters (LAEs) are a promising target to probe the large scale structure of the Universe at high redshifts, $z\gtrsim 2$. However, their detection is sensitive to radiative transfer effects that depend on local astrophysical…

Cosmology and Nongalactic Astrophysics · Physics 2019-04-10 Siddhartha Gurung-López , Álvaro A. Orsi , Silvia Bonoli , Carlton M. Baugh , Cedric G. Lacey

Lya emitters (LAEs) are particularly useful objects for the study of the Epoch of Reionization. Lya profiles can be used to estimate the amount of ionizing photons that are able to escape the galaxies, and therefore to understand what…

Astrophysics of Galaxies · Physics 2024-08-14 Emma Giovinazzo , Maxime Trebitsch , Valentin Mauerhofer , Pratika Dayal , Pascal A. Oesch

We present the first Lyman Alpha Emitter (LAE) study that combines: (i) cosmological SPH simulations run using GADGET-2, (ii) radiative transfer simulations (CRASH), and (iii) a previously developed LAE model. This complete LAE model…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Pratika Dayal , Antonella Maselli , Andrea Ferrara

Recent observations show that a large number of Lyman-alpha emitters (LAEs) at high redshift z >= 3 have unusually high Lya equivalent widths (EW > 400 angstrom). However, the origin of these high EWs is an open question. Here, we…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Hidenobu Yajima , Yuexing Li

Understanding Ly$\alpha$ emitting galaxies (LAEs) can be a key to reveal cosmic reionization and galaxy formation in the early Universe. Based on halo merger trees and Ly$\alpha$ radiation transfer calculations, we model redshift evolution…

Astrophysics of Galaxies · Physics 2018-05-02 Hidenobu Yajima , Kazuyuki Sugimura , Kenji Hasegawa

We present a physically motivated semi-analytic model to understand the clustering of high redshift Lyman Alpha Emitters (LAEs). We show that the model parameters constrained by the observed luminosity functions, can be used to predict…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Charles Jose , Raghunathan Srianand , Kandaswamy Subramanian

We report the observation of a further asymmetric, extended Lyman alpha emitting halo at z=2.63, from our ultra-deep, long-slit spectroscopic survey of faint high redshift emitters, undertaken with Magellan LDSS3 in the GOODS-S field. The…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Michael Rauch , George D. Becker , Martin G. Haehnelt , Jean-Rene Gauthier , Wallace L. W. Sargent

We use numerical simulations to study the effects of the patchiness of a partly reionized intergalactic medium (IGM) on the observability of Ly-alpha emitters (LAEs) at high redshifts (z ~ 6). We present a new model that divides the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Hannes Jensen , Peter Laursen , Garrelt Mellema , Ilian T. Iliev , Jesper Sommer-Larsen , Paul R. Shapiro

We use very large cosmological Smoothed-Particle-Hydrodynamics simulations to study the properties of high redshift Lyman-alpha emitters (LAEs). We identify star-forming galaxies at z=3.1 in a cosmological volume of 100 h^-1Mpc on a side.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Ikkoh Shimizu , Naoki Yoshida , Takashi Okamoto
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