Restframe I-band Hubble diagram for type Ia supernovae up to redshift z similar to 0.5 by Nobil, S, Amanullah, R, Garavini, G, Goobar, A, Lidman, C, Stanishev, V, Aldering, G, Antilogus, P, Astier, P, Burns, MS, Conley, A, Deustua, SE, Ellis, R, Fabbro, S, Fadeyev, V, Folatelli, G, Gibbons, R, Goldhaber, G, Groom, D, Hook, I, Howell, D, Kim, A, Knop, R, Nugent, P, Pain, R

“…A flat, Λ = 0, universe where the faintness of supernovae at z ∼ 0.5 is due to grey dust homogeneously distributed in the intergalactic medium is disfavoured based on the high-z Hubble diagram using this small data-set. …”

The generation and amplification of intergalactic magnetic fields in analogue laboratory experiments with high power lasers by Gregori, G, Reville, B, Miniati, F

“…These arise during the collapse of protogalactic structures, resulting in the formation of high Mach number shocks in the intergalactic medium, which act as sources of vorticity in protogalaxies. …”

Modelling Lyman α forest cross-correlations with LyMAS by Lochhaas, C, Weinberg, D, Peirani, S, Dubois, Y, Colombi, S, Blaizot, J, Font-Ribera, A, Pichon, C, Devriendt, J

“…We infer bias-weighted mean halo masses of Mh/1012 h-1M⊙ = 2.19+0.16-0.15 and 0.69+0.16-0.14 for the host haloes of quasars and DLAs, with ~0.2 dex systematic uncertainty associated with redshift evolution, intergalactic medium parameters, and selection of data fitting range.…”

MgII in the JWST era: a probe of lyman continuum escape? by Katz, H, Garel, T, Rosdahl, J, Mauerhofer, V, Kimm, T, Blaizot, J, Michel-Dansac, L, Devriendt, J, Slyz, A, Haehnelt, M

“…Due to the intervening intergalactic medium (IGM), the possibility of observing LyC photons directly in the epoch of reionization is highly unlikely. …”

Spectroscopy of z similar to 7 candidate galaxies: using Lyman alpha to constrain the neutral fraction of hydrogen in the high-redshift universe by Caruana, J, Bunker, A, Wilkins, S, Stanway, E, Lorenzoni, S, Jarvis, M, Ebert, H

“…This may indicate that a signicant neutral HI fraction in the intergalactic medium suppresses Lyman α, with an estimated neutral fraction χHI ~ 0.5, in agreement with other estimates. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.…”

Suppressed effective viscosity in the bulk intergalactic plasma by Zhuravleva, I, Churazov, E, Schekochihin, A, Allen, S, Vikhlinin, A, Werner, N

“…Using deep Chandra observations of the Coma Cluster^10,11, we probe gas fluctuations in intergalactic medium down to spatial scales where the transport processes should prominently manifest themselves—provided that hydrodynamic models¹² with pure Coulomb collision rates are indeed adequate. …”

FRB 121102 casts new light on the photon mass by Luca Bonetti, John Ellis, Nikolaos E. Mavromatos, Alexander S. Sakharov, Edward K. Sarkisyan-Grinbaum, Alessandro D.A.M. Spallicci

“…Taking into account the plasma contributions to the DM from the Intergalactic medium (IGM) and the Milky Way, we use the data on FRB 121102 to derive the constraint mγ≲2.2×10−14 eVc−2 (3.9×10−50 kg). …”
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Probing the Circumgalactic Medium with Cosmic Microwave Background Polarization Statistical Anisotropy by Anirban Roy, Alexander van Engelen, Vera Gluscevic, Nicholas Battaglia

“…Measurements of anisotropy in optical depth τ and Compton y parameters are imprinted by the galaxies and galaxy clusters and are thus sensitive to the thermodynamic properties of the circumgalactic medium and intergalactic medium. We use an analytic halo model to predict the power spectrum of the optical depth ( τ τ ), the cross-correlation between the optical depth and the Compton y parameter ( τ y ), and the cross-correlation between the optical depth and galaxy clustering ( τ g ), and compare this model to cosmological simulations. …”
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Axion-like Particle Searches with IACTs by Ivana Batković, Alessandro De Angelis, Michele Doro, Marina Manganaro

“…The growing interest in axion-like particles (ALPs) stems from the fact that they provide successful theoretical explanations of physics phenomena, from the anomaly of the <inline-formula><math display="inline"><semantics><mrow><mi>C</mi><mi>P</mi></mrow></semantics></math></inline-formula>-symmetry conservation in strong interactions to the observation of an unexpectedly large TeV photon flux from astrophysical sources, at distances where the strong absorption by the intergalactic medium should make the signal very dim. In this latter condition, which is the focus of this review, a possible explanation is that TeV photons convert to ALPs in the presence of strong and/or extended magnetic fields, such as those in the core of galaxy clusters or around compact objects, or even those in the intergalactic space. …”
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The Epoch of Reionization in Warm Dark Matter Scenarios by Massimiliano Romanello, Nicola Menci, Marco Castellano

“…We retrace the ionization history of intergalactic medium with hot stellar emission only, exploiting fixed and variable photons escape fraction models (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>f</mi><mrow><mi>e</mi><mi>s</mi><mi>c</mi></mrow></msub></semantics></math></inline-formula>). …”
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Detecting the 21 cm forest in the 21 cm power spectrum by Ewall-Wice, Aaron Michael, Dillon, Joshua Shane, Mesinger, A., Hewitt, Jacqueline N

“…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 by Bañados, Eduardo, Rauch, Michael, Decarli, Roberto, Farina, Emanuele P, Hennawi, Joseph F, Mazzucchelli, Chiara, Venemans, Bram P, Walter, Fabian, Simcoe, Robert A., Prochaska, J Xavier, Cooper, Thomas, Davies, Frederick B, Chen, Shi-Fan S.

“…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 by Bose, Sownak, Vogelsberger, Mark, Zavala, Jesús, Pfrommer, Christoph, Cyr-Racine, Francis-Yan, Bohr, Sebastian, Bringmann, Torsten

“…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? by Greig, Bradley, Mesinger, Andrei, Haiman, Zoltán, Simcoe, Robert A

“…© 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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Detection of cosmic structures using the bispectrum phase. II. First results from application to cosmic reionization using the Hydrogen Epoch of Reionization Array

“…Here, we provide a demonstration of this technique on a subset of data from the Hydrogen Epoch of Reionization Array (HERA) to place approximate constraints on the brightness temperature of the intergalactic medium (IGM). From this limited data, at z=7.7 we infer "1σ"upper limits on the IGM brightness temperature to be ≤ 316 "pseudo"mK at κ =0.33 "pseudo"h Mpc-1 (data-limited) and ≤ 1000 "pseudo"mK at κ =0.875 "pseudo"h Mpc-1 (noise-limited). …”
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The THESAN Project: ionizing escape fractions of reionization-era galaxies by Yeh, Jessica Yuan-Chen

“…A fundamental requirement for reionizing the Universe is that a sufficient fraction of the ionizing photons emitted by galaxies successfully escapes into the intergalactic medium. However, due to the scarcity of high-redshift observational data, the sources driving reionization remain uncertain. …”
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It's always darkest before the cosmic dawn : early results from novel tools and telescopes for 21 cm cosmology by Dillon, Joshua Shane

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Simulating MOS science on the ELT: Ly alpha forest tomography by Japelj, J, Laigle, C, Puech, M, Pichon, C, Rahmani, H, Dubois, Y, Devriendt, JEG, Petitjean, P, Hammer, F, Gendron, E, Kaper, L, Morris, S, Pirzkal, N, Sanchez-Janssen, R, Slyz, A, Vergani, SD, Yang, Y

“…At $z &gt; 2$, the structure can be traced by the neutral intergalactic medium (IGM) by way of observing the Ly$\alpha$, forest towards densely-sampled lines-of-sight of bright background sources, such as quasars and star forming galaxies. …”

Galaxies at high redshift and reionization by Bunker, A, Stanway, E, Ellis, R, Lacy, M, McMahon, R, Stark, D, Chiu, K, Eyles, L

“…We are now exploring redshifts of 6 and beyond, when the Universe was less than a billion years old, an epoch when the previously neutral intergalactic medium was reionized. The continuing discovery of galaxies at progressively higher and higher redshifts has been driven by the availability of large telescopes on the ground and in space, improvements in detector technology, and new search strategies. …”

Horizon-AGN virtual observatory – 1. SED-fitting performance and forecasts for future imaging surveys by Laigle, C, Davidzon, I, Ilbert, O, Devriendt, J, Kashino, D, Pichon, C, Capak, P, Arnouts, S, Torre, S, Dubois, Y, Gozaliasl, G, Borgne, D, Lilly, S, McCracken, H, Salvato, M, Slyz, A

“…The virtual photometry accounts for the complex star formation history (SFH) and metal enrichment of HORIZON-AGN galaxies, and consistently includes magnitude errors, dust attenuation, and absorption by intergalactic medium. The COSMOS-like photometry is fitted in the same configuration as the COSMOS2015 catalogue. …”