Confirmation of X-ray Absorption by Warm-hot Intergalactic Medium in the Sculptor Wall by Fang, Taotao, Buote, David A., Humphrey, Philip J., Canizares, Claude R., Zappacosta, Luca, Maiolino, Roberto, Tagliferri, Gianpiero, Gastaldello, Fabio

“…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 by Pober, Jonathan C., Ali, Zaki S., Parsons, Aaron R., McQuinn, Matthew, Aguirre, James E., Bernardi, Gianni, Bradley, Richard F., Carilli, Chris L., Cheng, Carina, DeBoer, David R., Dexter, Matthew R., Furlanetto, Steven R., Grobbelaar, Jasper, Horrell, Jasper, Jacobs, Daniel C., Klima, Patricia J., Kohn, Saul A., Liu, Adrian Chi-Yan, MacMahon, David H. E., Maree, Matthys, Mesinger, Andrei, Moore, David F., Razavi-Ghods, Nima, Stefan, Irina I., Walbrugh, William P., Walker, Andre, Zheng, Haoxuan

“…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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High Resolution Spectroscopy of X-ray Quasars: Searching for the X-ray Absorption from the Warm-Hot Intergalactic Medium by Canizares, Claude R., Fang, Taotao, 1970-, Marshall, Herman

“…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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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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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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Detection of cosmic structures using the bispectrum phase. II. First results from application to cosmic reionization using the Hydrogen Epoch of Reionization Array by Ewall-Wice, Aaron Michael, Hewitt, Jacqueline N, Neben, Abraham Richard, Zheng, Haoxuan

“…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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Large-scale mass distribution in the Illustris simulation by Haider, M., Steinhauser, D., Genel, S., Springel, V., Hernquist, L., Vogelsberger, Mark, Torrey, Paul A.

“…Categorizing the baryons according to their density and temperature, we find that 17.8 per cent of them are in a condensed state, 21.6 per cent are present as cold, diffuse gas, and 53.9 per cent are found in the state of a warm–hot intergalactic medium.…”
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Hydrogen Epoch of Reionization Array (HERA) by Hewitt, Jacqueline N., Ewall-Wice, Aaron, Neben, Abraham R., Tegmark, Max Erik

“…The Hydrogen Epoch of Reionization Array (HERA) is a staged experiment to measure 21 cm emission from the primordial intergalactic medium (IGM) throughout cosmic reionization (z = 6-12), and to explore earlier epochs of our Cosmic Dawn (z ∼ 30). …”
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HERA Phase I Limits on the Cosmic 21 cm Signal: Constraints on Astrophysics and Cosmology during the Epoch of Reionization by Hewitt, Jacqueline N, Kern, Nicholas S., Neben, Abraham Richard, Zheng, Haoxuan

“…Here, we use several independent theoretical models to infer constraints on the intergalactic medium (IGM) and galaxies during the epoch of reionization from these limits. …”
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Confirming the Detection of an Intergalactic X-Ray Absorber toward PKS 2155–304 by Canizares, Claude R., Yao, Yangsen, Fang, Taotao, 1970-

“…We confirm the detection of an absorption line plausibly identified as O VIII Lyα from a warm-hot intergalactic medium associated with a small group of galaxies along the line of sight, as originally reported by Fang and coworkers. …”
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The Carbon Content of Intergalactic Gas at Z=4.25 and Its Evolution toward Z=2.4 by Simcoe, Robert A.

“…Our results imply that ~50% of the heavy elements seen in the intergalactic medium at z ~ 2.4 were deposited in the 1.3 Gyr between z ~ 4.3 and z ~ 2.4. …”
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The impact of feedback on cosmological gas accretion by Nelson, Dylan, Genel, Shy, Vogelsberger, Mark, Springel, Volker, Sijacki, Debora, Hernquist, Lars, Torrey, Paul A.

“…We explore: (a) the accretion rate of material contributing to the net growth of galaxies and originating directly from the intergalactic medium, finding that feedback strongly suppresses the raw, as well as the net, inflow of this ‘smooth mode’ gas at all redshifts, regardless of the temperature history of newly acquired gas. …”
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PREDOMINANTLY LOW METALLICITIES MEASURED IN A STRATIFIED SAMPLE OF LYMAN LIMIT SYSTEMS AT Z = 3.7 by Cooksey, Kathy L., O’Meara, John M., Glidden, Ana, Cooper, Thomas Jared, Simcoe, Robert A.

“…Recent models of galaxy evolution propose that galaxies replenish their gas from the low-metallicity intergalactic medium (IGM) via high-density H i "flows" and eject enriched interstellar gas via outflows. …”
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Constraining high-redshift X-ray sources with next generation 21-cm power spectrum measurements by Mesinger, Andrei, Pober, Jonathan, Ewall-Wice, Aaron Michael, Hewitt, Jacqueline N, Dillon, Joshua Shane, Liu, Adrian Chi-Yan

“…We use the Fisher matrix formalism and seminumerical simulations to derive quantitative predictions of the constraints that power spectrum measurements on next-generation interferometers, such as the Hydrogen Epoch of Reionization Array (HERA) and the Square Kilometre Array (SKA), will place on the characteristics of the X-ray sources that heated the high-redshift intergalactic medium. Incorporating observations between z = 5 and 25, we find that the proposed 331 element HERA and SKA phase 1 will be capable of placing ≲ 10 per cent constraints on the spectral properties of these first X-ray sources, even if one is unable to perform measurements within the foreground contaminated ‘wedge’ or the FM band. …”
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PROBING THE OUTSKIRTS OF THE EARLY-STAGE GALAXY CLUSTER MERGER A1750 by Bulbul, Esra, Randall, Scott W., Bayliss, Matthew, Miller, Eric, Andrade-Santos, Felipe, Johnson, Ryan, Blanton, Elizabeth L., Forman, William R., Jones, Christine, Paterno-Mahler, Rachel, Murray, Stephen S., Sarazin, Craig L., Smith, Randall K., Ezer, Cemile, Miller, Eric D, Bautz, Marshall W.

“…Finally, we find evidence for diffuse, cool ( < 1 keV) gas at large cluster radii (R 200 ) along the filament, which is consistent with the expected properties of the denser, hotter phase of the warm-hot intergalactic medium. Key words: galaxies: clusters: individual (A1750); large-scale structure of universe; X-rays: galaxies: clusters…”
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Introducing the thesan project: radiation-magnetohydrodynamic simulations of the epoch of reionization by Kannan, R, Garaldi, E, Smith, Aaron, Pakmor, R, Springel, V, Vogelsberger, M, Hernquist, L

“…<jats:title>ABSTRACT</jats:title> <jats:p>We introduce the thesan project, a suite of large volume ($L_\mathrm{box} = 95.5 \, \mathrm{cMpc}$) radiation-magnetohydrodynamic simulations that simultaneously model the large-scale statistical properties of the intergalactic medium during reionization and the resolved characteristics of the galaxies responsible for it. …”
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Detection of a Transient X-ray Absorption Line Intrinsic to the Bl Lacertae Object H 2356-309 by Fang, Taotao, Buote, David A., Humphrey, Philip J., Canizares, Claude R.

“…This BL Lac object was observed during XMM-Newton cycle 7 and Chandra cycles 8 and 10, as part of our campaign to investigate X-ray absorption produced by the warm-hot intergalactic medium residing in the foreground large-scale superstructure. …”
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ORIGIN: metal creation and evolution from the cosmic dawn by Figueroa-Feliciano, Enectali

“…Using the same instrument, we can also study the so far only partially detected baryons in the Warm-Hot Intergalactic Medium (WHIM). The less dense part of the WHIM will be studied using absorption lines at low redshift in the spectra for GRBs. …”
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WHAT NEXT-GENERATION 21 cm POWER SPECTRUM MEASUREMENTS CAN TEACH US ABOUT THE EPOCH OF REIONIZATION by Pober, Jonathan C., Liu, Adrian Chi-Yan, Aguirre, James E., Bowman, Judd D., Bradley, Richard F., Carilli, Chris L., DeBoer, David R., Jacobs, Daniel C., McQuinn, Matthew, Morales, Miguel F., Parsons, Aaron R., Werthimer, Dan J., Dillon, Joshua Shane, Tegmark, Max Erik, Hewitt, Jacqueline N

“…Uncertainties in the reionization history are accounted for using a series of simulations that vary the ionizing efficiency and minimum virial temperature of the galaxies responsible for reionization, as well as the mean free path of ionizing photons through the intergalactic medium. Given various combinations of models, we consider the significance of the possible power spectrum detections, the ability to trace the power spectrum evolution versus redshift, the detectability of salient power spectrum features, and the achievable level of quantitative constraints on astrophysical parameters. …”
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DISCOVERY OF THREE z > 6.5 QUASARS IN THE VISTA KILO-DEGREE INFRARED GALAXY (VIKING) SURVEY by Venemans, B. P., Findlay, J. R., Sutherland, W. J., De Rosa, G., McMahon, R. G., Kuijken, K., Lewis, J. R., Simcoe, Robert A., Gonzalez-Solares, E. A.

“…Studying quasars at the highest redshifts can constrain models of galaxy and black hole formation, and it also probes the intergalactic medium in the early universe. Optical surveys have to date discovered more than 60 quasars up to z [~ over _] 6.4, a limit set by the use of the z-band and CCD detectors. …”
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