302 citations · 711 across the 29 of their papers we have counts for
30 papers
X-ray absorption lines in FUV-detected quasars: II. Cosmological density and properties of the missing baryons
Massimiliano Bonamente, David Spence, Jussi Ahoranta +3
This paper presents constraints on the cosmological density of baryons from a systematic search for O VII and O VIII absorption lines in the XMM-Newton and Chandra X-ray spectra of…
X-ray absorption lines in FUV-detected quasars: I. Sample and analysis of the XMM-Newton and Chandra data
David Spence, Massimiliano Bonamente, Jussi Ahoranta +3
This paper presents initial results of a systematic search for resonance X-ray absorption lines from H-like O VIII and He-like O VII caused by the intervening warm-hot intergalacti…
Cooling Flows as a Reference Solution for the Hot Circumgalactic Medium
Imran Sultan, Claude-André Faucher-Giguère, Jonathan Stern +3
The circumgalactic medium (CGM) in halos is dominated by a hot phase ( K). While many models exist for the hot gas structur…
Ne VIII in the warm-hot circumgalactic medium of FIRE simulations and in observations
Nastasha A. Wijers, Claude-André Faucher-Giguère, Jonathan Stern +2
The properties of warm-hot gas around galaxies can be studied with absorption lines from highly ionized metals. We predict Ne VIII column densities from cosmological z…
Prospects for detecting the circum- and intergalactic medium in X-ray absorption using the extended intracluster medium as a backlight
Lýdia Štofanová, Aurora Simionescu, Nastasha A. Wijers +4
The warm-hot plasma in cosmic web filaments is thought to comprise a large fraction of the gas in the local Universe. So far, the search for this gas has focused on mapping its emi…
Effects of multi-channel AGN feedback in FIRE cosmological simulations of massive galaxies
Lindsey Byrne, Claude-André Faucher-Giguère, Sarah Wellons +6
Feedback from supermassive black holes is believed to be a critical driver of the observed color bimodality of galaxies above the Milky Way mass scale. AGN feedback has been modele…
Resonant scattering of the OVII X-ray emission line in the circumgalactic medium of TNG50 galaxies
Dylan Nelson, Chris Byrohl, Anna Ogorzalek +15
We study the impact of resonantly scattered X-ray line emission on the observability of the hot circumgalactic medium (CGM) of galaxies. We apply a Monte Carlo radiative transfer p…
The Halo21 Absorption Modeling Challenge: Lessons From "Observing" Synthetic Circumgalactic Absorption Spectra
Zachary Hafen, Sameer, Cameron Hummels +7
In the Halo21 absorption modeling challenge we generated synthetic absorption spectra of the circumgalactic medium (CGM), and attempted to estimate the metallicity, temperature, an…
A search for the missing baryons with X--ray absorption lines towards the blazar 1ES 1553+113
D. Spence, M. Bonamente, J. Nevalainen +5
This paper presents an analysis of XMM X--ray spectra of the quasar 1ES 1553+113, in search for absorption lines from the intervening warm--hot intergalactic medium. A search for O…
Cosmic metal invaders: Intergalactic OVII as a tracer of the warm-hot intergalactic medium within cosmic filaments in the EAGLE simulation
T. Tuominen, J. Nevalainen, P. Heinämäki +5
The current observational status of the hot (log T(K) > 5.5) warm-hot intergalactic medium (WHIM) remains incomplete. While recent observations from stacking large numbers of Cosmi…
A comprehensive study on the relation between the metal enrichment of ionised and atomic gas in star-forming galaxies
M. Arabsalmani, L. Garratt-Smithson, N. Wijers +7
We study the relation between the metallicities of ionised and atomic gas in star-forming galaxies at z=0-3 using the EAGLE cosmological, hydrodynamical simulations. This is done b…
Galaxy cluster photons alter the ionisation state of the nearby warm-hot intergalactic medium
Lýdia Štofanová, Aurora Simionescu, Nastasha A. Wijers +2
The physical properties of the faint and extremely tenuous plasma in the far outskirts of galaxy clusters, the circumgalactic media of normal galaxies, and filaments of the cosmic…
Improving blazar redshift constraints with the edge of the Ly forest: 1ES 1553+113 and implications for observations of the WHIM
J. Dorigo Jones, S. D. Johnson, Sowgat Muzahid +6
Blazars are some of the brightest UV and X-ray sources in the sky and are valuable probes of the elusive warm-hot intergalactic medium (WHIM; K). However, man…
Fast radio bursts as probes of feedback from active galactic nuclei
Adam J. Batten, Alan R. Duffy, Chris Flynn +3
Fast Radio Bursts (FRBs) are a promising tool for studying the low-density universe as their dispersion measures (DM) are extremely sensitive probes of electron column density. Act…
Discovery of a multiphase OVI and OVII absorber in the circumgalactic/intergalactic transition region
J. Ahoranta, A. Finoguenov, M. Bonamente +4
The observational constraints on the baryon content of the WHIM rely almost entirely on FUV measurements. However, cosmological, hydrodynamical simulations predict strong correlati…
The warm-hot circumgalactic medium around EAGLE-simulation galaxies and its detection prospects with X-ray line emission
Nastasha A. Wijers, Joop Schaye
We estimate the detectability of X-ray metal-line emission from the circumgalactic medium (CGM) of galaxies over a large halo mass range (-$…
The Cosmic Dispersion Measure in the EAGLE Simulations
Adam J. Batten, Alan R. Duffy, Nastasha Wijers +4
The dispersion measure (DM) of fast radio bursts (FRBs) provides a unique way to probe ionised baryons in the intergalactic medium (IGM). Cosmological models with different paramet…
Detection capabilities of the Athena X-IFU for the warm-hot intergalactic medium using gamma-ray burst X-ray afterglows
S. Walsh, S. McBreen, A. Martin-Carrillo +5
At low redshifts, the observed baryonic density falls far short of the total number of baryons predicted. Cosmological simulations suggest that these baryons reside in filamentary…
The warm-hot circumgalactic medium around EAGLE-simulation galaxies and its detection prospects with X-ray and UV line absorption
Nastasha A. Wijers, Joop Schaye, Benjamin D. Oppenheimer
We use the EAGLE (Evolution and Assembly of GaLaxies and their Environments) cosmological simulation to study the distribution of baryons, and far-ultraviolet (O VI), extreme-ultra…
EAGLE and Illustris-TNG predictions for resolved eROSITA X-ray observations of the circumgalactic medium around normal galaxies
Benjamin D. Oppenheimer, Akos Bogdan, Robert A. Crain +8
We simulate stacked observations of nearby hot X-ray coronae associated with galaxies in the EAGLE and Illustris-TNG hydrodynamic simulations. A forward modeling pipeline is develo…
Hot WHIM counterparts of FUV OVI absorbers: Evidence in the line-of-sight towards quasar 3C 273
Jussi Ahoranta, Jukka Nevalainen, Nastasha Wijers +7
We explore the high spectral resolution X-ray data towards the quasar 3C273 to search for signals of hot ( K) X-ray-absorbing gas co-located with two established inte…
The Physical Origins of the Identified and Still Missing Components of the Warm-Hot Intergalactic Medium: Insights from Deep Surveys in the Field of Blazar 1ES1553+113
Sean D. Johnson, John S. Mulchaey, Hsiao-Wen Chen +11
The relationship between galaxies and the state/chemical enrichment of the warm-hot intergalactic medium (WHIM) expected to dominate the baryon budget at low-z provides sensitive c…
The Voyage of Metals in the Universe from Cosmological to Planetary Scales: the need for a Very High-Resolution, High Throughput Soft X-ray Spectrometer
F. Nicastro, J. Kaastra, C. Argiroffi +27
Metals form an essential part of the Universe at all scales. Without metals we would not exist, and the Cosmos would look completely different. Metals are primarily born through nu…
Voyage through the Hidden Physics of the Cosmic Web
A. Simionescu, S. Ettori, N. Werner +27
The majority of the ordinary matter in the local Universe has been heated by strong structure formation shocks and resides in a largely unexplored hot, diffuse, X-ray emitting plas…