The Three Hundred: Gas Properties Outside of Galaxy Cluster with the WHIM Contribution and Detection

Abstract

We investigate the physical properties and detectability of warm-hot intergalactic medium (WHIM) gas with temperatures in the range $10^5<T<10^7$K around galaxy clusters using simulated galaxy clusters from The Three Hundred project. In simulations with different input physics (GIZMO-SIMBA and Gadget-X), we consistently find that the median gas temperature decreases to the WHIM upper bound, $10^7$K, at $\sim 2\times R_{200c}$, while the WHIM mass fraction increases with radius until $\sim 3\times R_{200c}$, where it plateaus at $\sim 70$ per cent.By simulating X-ray emission from all gas components, we find that the WHIM contribution to the soft X-ray band (0.2 - 2.3 keV) increases with radius but eventually plateaus at larger distances. The differences between the two simulations become more pronounced at higher redshifts and larger radii. Finally, after accounting for observational effects, primarily by removing (sub)halos, we predict that the signal-to-noise ratio of the X-ray signal obtained by stacking the eRASS1 galaxy cluster catalogue will be $\sim 7$ for GIZMO-SIMBA and $\sim 21$ for Gadget-X.

9 pages, 8 figures

References in corpus (40)

• Simba: Cosmological Simulations with Black Hole Growth and Feedback
• The effect of photo-ionization on the cooling rates of enriched, astrophysical plasmas
• The SRG/eROSITA all-sky survey: First X-ray catalogues and data release of the western Galactic hemisphere
• The eROSITA Final Equatorial Depth Survey (eFEDS): The X-ray catalog
• Grackle: a Chemistry and Cooling Library for Astrophysics
• The Search for the Missing Baryons at Low Redshift
• A High-Resolution Survey of Low-Redshift QSO Absorption Lines: Statistics and Physical Conditions of O VI Absorbers
• The eROSITA Final Equatorial-Depth Survey (eFEDS): Catalog of galaxy clusters and groups
• \textsc{The Three Hundred} project: The \textsc{Gizmo-Simba} run
• Properties of gas phases around cosmic filaments at z=0 in the Illustris-TNG simulation
• The Abell 3391/95 galaxy cluster system: A 15 Mpc intergalactic medium emission filament, a warm gas bridge, infalling matter clumps, and (re-) accelerated plasma discovered by combining SRG/eROSITA data with ASKAP/EMU and DECam data
• How baryons affect halos and large-scale structure: a unified picture from the Simba simulation
• An EAGLE view of the missing baryons
• Absorption signatures of warm-hot gas at low redshift: OVI
• Density and temperature of cosmic-web filaments on scales of tens of megaparsecs
• Detection of the Missing Baryons toward the Sightline of H1821+643
• Tempestuous life beyond R_500: X-ray view on the Coma cluster with SRG/eROSITA. I. X-ray morphology, recent merger, and radio halo connection
• The hot circumgalactic medium in the eROSITA All-Sky Survey I. X-ray surface brightness profiles
• Relative distribution of dark matter, gas, and stars around cosmic filaments in the IllustrisTNG simulation
• The large-scale environment from cosmological simulations I: The baryonic cosmic web
• Gas distribution from clusters to filaments in IllustrisTNG
• A complete view of the outskirts of the Coma cluster
• The Three Hundred Project: the stellar and gas profiles
• X-ray emission from cosmic web filaments in SRG/eROSITA data
• Hot WHIM counterparts of FUV OVI absorbers: Evidence in the line-of-sight towards quasar 3C 273
• X-ray surface brightness and gas density profiles of galaxy clusters up to 3*R500c with SRG/eROSITA
• The Three Hundred Project: the evolution of physical baryon profiles
• The SRG/eROSITA All-Sky Survey: View of the Virgo Cluster
• ELUCID VII: Using Constrained Hydro Simulations to Explore the Gas Component of the Cosmic Web
• Prospects of detecting soft X-ray emission from typical WHIM filaments around massive clusters and the Coma cluster soft excess
• The SRG/eROSITA all-sky survey. X-ray emission from the warm-hot phase gas in long cosmic filaments
• The Physical Nature of Circumgalactic Medium Absorbers in Simba
• Soft X-ray emission from warm gas in IllustrisTNG circum-cluster environments
• Discovery of a multiphase OVI and OVII absorber in the circumgalactic/intergalactic transition region
• Can the splashback radius be an observable boundary of galaxy clusters?
• Studying the Warm Hot Intergalactic Medium in emission: a reprise
• A WHIM origin for the soft excess emission in the Coma cluster
• The warm-hot intergalactic medium in inter-cluster filaments -- A forecast for HUBS observations based on eRASS1 superclusters
• The SRG/eROSITA All-Sky Survey: Large-scale view of the Centaurus cluster
• Prospects for detecting the circum- and intergalactic medium in X-ray absorption using the extended intracluster medium as a backlight

Cited by in corpus (3)

• The Three Hundred Project: Modeling Baryon and Hot-Gas Fraction Evolution in Simulated Clusters
• The SRG/eROSITA All-Sky Survey. Detection of shock-heated gas beyond the halo boundary into the accretion region
• X-ray emission in IllustrisTNG circum-cluster environments. II -- Possible origins of the soft X-ray excess emission