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Confirmation of X-ray Absorption by Warm-hot Intergalactic Medium in the Sculptor Wall
Published 2011“…In a previous paper, we reported a 3σ detection of an absorption line from the warm-hot intergalactic medium (WHIM) using the Chandra and XMM X-ray grating spectra of the blazar H2356-309, the sight line of which intercepts the Sculptor Wall, a large-scale superstructure of galaxies at z ~ 0.03. …”
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PAPER-64 CONSTRAINTS ON REIONIZATION. II. THE TEMPERATURE OF THE z = 8.4 INTERGALACTIC MEDIUM
Published 2015“…We present constraints on both the kinetic temperature of the intergalactic medium (IGM) at z = 8.4, and on models for heating the IGM at high-redshift with X-ray emission from the first collapsed objects. …”
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X-RAY SCATTERING ECHOES AND GHOST HALOS FROM THE INTERGALACTIC MEDIUM: RELATION TO THE NATURE OF AGN VARIABILITY
Published 2015“…X-ray bright quasars might be used to trace dust in the circumgalactic and intergalactic medium through the phenomenon of X-ray scattering, which is observed around Galactic objects whose light passes through a sufficient column of interstellar gas and dust. …”
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High Resolution Spectroscopy of X-ray Quasars: Searching for the X-ray Absorption from the Warm-Hot Intergalactic Medium
Published 2012“…The primary goal is to search for the narrow X-ray absorption lines produced by highly ionized metals in the warm-hot intergalactic medium. All the X-ray spectra can be fitted by a power law with the neutral hydrogen absorption method. …”
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PROBING THE INTERGALACTIC MEDIUM/GALAXY CONNECTION. V. ON THE ORIGIN OF Lyα AND O VI ABSORPTION AT z < 0.2
Published 2015“…We analyze the association of galaxies with Lyα and O VI absorption, the most commonly detected transitions of the low-z intergalactic medium (IGM), in the fields of 14 quasars with z[subscript em] = 0.06–0.57. …”
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Radio Astronomy
Published 2010Subjects: “…Radio Astronomy Studies of the Intergalactic Medium…”
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Probing the epoch of reionization with redshifted 21 cm HI emission
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Baryons in the Cosmic Web of IllustrisTNG – I: gas in knots, filaments, sheets, and voids
Published 2021“…We also show that the cool, diffuse intergalactic medium [IGM; $T\lt 105 \, {\rm K}$, $n-{\rm H}\lt 10{-4}(1+z) \, {\rm cm{-3}}$] and the warm-hot intergalactic medium [WHIM; $105 \lt T\lt 107 \, {\rm K}$, $n-{\rm H} \lt 10{-4}(1+z)\, {\rm cm{-3}}$] constitute ${\sim } 39$ and ${\sim } 46{{\ \rm per\ cent}}$ of the baryons at redshift z = 0, respectively. …”
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Reionization and beyond: detecting the peaks of the cosmological 21 cm signal
Published 2019“…There is increasing interest also in the pre-reionization epoch when the intergalactic medium (IGM) was heated by an early X-ray background. …”
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Baryons in the Cosmic Web of IllustrisTNG – I: gas in knots, filaments, sheets, and voids
Published 2022“…We also show that the cool, diffuse intergalactic medium [IGM; $T\lt 105 \, {\rm K}$, $n-{\rm H}\lt 10{-4}(1+z) \, {\rm cm{-3}}$] and the warm-hot intergalactic medium [WHIM; $105 \lt T\lt 107 \, {\rm K}$, $n-{\rm H} \lt 10{-4}(1+z)\, {\rm cm{-3}}$] constitute ${\sim } 39$ and ${\sim } 46{{\ \rm per\ cent}}$ of the baryons at redshift z = 0, respectively. …”
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Effect of magnetic seed fields on Lyman Alpha emission from distant quasars
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A Metal-poor Damped Ly α System at Redshift 6.4
Published 2021“…However, in order to match the data a contribution of an intergalactic medium 5%-38% neutral or additional weaker absorbers near the quasar is also required. …”
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ETHOS – an Effective Theory of Structure Formation: detecting dark matter interactions through the Lyman-α forest
Published 2021“…We perform a series of cosmological hydrodynamic simulations to investigate the effects of non-gravitational dark matter (DM) interactions on the intergalactic medium (IGM). In particular, we use the ETHOS framework to compare statistics of the Lyman-α forest in cold dark matter (CDM) with an alternative model in which the DM couples strongly with a relativistic species in the early universe. …”
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Detecting the 21 cm forest in the 21 cm power spectrum
Published 2019“…Using semi-numerical simulations of the intergalactic medium and a semi-empirical source population, we show that the 21 cm forest dominates a distinctive region of k-space, k ≲ 0.5Mpc⁻¹. …”
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A Metal-poor Damped Ly α System at Redshift 6.4
Published 2022“…However, in order to match the data a contribution of an intergalactic medium 5%-38% neutral or additional weaker absorbers near the quasar is also required. …”
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ETHOS – an Effective Theory of Structure Formation: detecting dark matter interactions through the Lyman-α forest
Published 2022“…We perform a series of cosmological hydrodynamic simulations to investigate the effects of non-gravitational dark matter (DM) interactions on the intergalactic medium (IGM). In particular, we use the ETHOS framework to compare statistics of the Lyman-α forest in cold dark matter (CDM) with an alternative model in which the DM couples strongly with a relativistic species in the early universe. …”
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Are we witnessing the epoch of reionisation at z = 7.1 from the spectrum of J1120+0641?
Published 2021“…© 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society We quantify the presence of Lyα damping wing absorption from a partially neutral intergalactic medium (IGM) in the spectrum of the z = 7.08 QSO, ULASJ1120+0641. …”
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