COS Observations of the Cosmic Web: A Search for the Cooler Components of a Hot, X-ray Identified Filament

Abstract

In the local universe, a large fraction of the baryon content is believed to exist as diffuse gas in filaments. While this gas is directly observable in X-ray emission around clusters of galaxies, it is primarily studied through its UV absorption. Recently, X-ray observations of large-scale filaments connecting to the cosmic web around the nearby ($z=0.05584$) cluster Abell 133 were reported. One of these filaments is intersected by the sightline to quasar [VV98] J010250.2$-$220929, allowing for a first-ever census of cold, cool, and warm gas in a filament of the cosmic web where hot gas has been seen in X-ray emission. Here, we present UV observations with the Cosmic Origins Spectrograph and optical observations with the Magellan Echellette spectrograph of [VV98] J010250.2$-$220929. We find no evidence of cold, cool, or warm gas associated with the filament. In particular, we set a $2\sigma$ upper limit on Ly$\alpha$ absorption of $\log (N_{HI}/{\text{cm}}^{-2})<13.7$, assuming a Doppler parameter of $b=20\text{km}{\text{s}}^{-1}$. As this sightline is $\sim 1100\text{pkpc}$ ($0.7R_{\text{vir}}$) from the center of Abell 133, we suggest that all gas in the filament is hot at this location, or that any warm, cool, or cold components are small and clumpy. A broader census of this system -- combining more UV sightlines, deeper X-ray observations, and a larger redshift catalog of cluster members -- is needed to better understand the roles of filaments around clusters.

arXiv commentPublished in the Astrophysical Journal Letters; 9 Pages, 4 Figures, 1 Table. v2 corrects one reference

References in corpus (39)

• How Filaments are Woven into the Cosmic Web
• The Circumgalactic Medium
• Where are the Baryons?
• Baryons in the Warm-Hot Intergalactic Medium
• The Baryon Census in a Multiphase Intergalactic Medium: 30% of the Baryons May Still Be Missing
• The Cosmic Origins Spectrograph
• Observations of the MIssing Baryons in the warm-hot intergalactic medium
• Multiscale Phenomenology of the Cosmic Web
• The COS-Dwarfs Survey: The Carbon Reservoir Around sub-L* Galaxies
• Baryons in the CosmicWeb of IllustrisTNG - I: Gas in Knots, Filaments, Sheets and Voids
• Warm-hot baryons comprise 5-10 per cent of filaments in the cosmic web
• The MagE Spectrograph
• Detection of hot gas in the filament connecting the clusters of galaxies Abell 222 and Abell 223
• Gas Clumping in the Outskirts of Lambda-CDM Clusters
• Characterizing Circumgalactic Gas around Massive Ellipticals at z~0.4 - II. Physical Properties and Elemental Abundances
• On the possible environmental effect in distributing heavy elements beyond individual gaseous halos
• Simulating the physical properties of dark matter and gas inside the cosmic web
• MASE: A New Data--Reduction Pipeline for the Magellan Echellette Spectrograph
• Selecting damped Lyman-alpha systems through CaII absorption. I: Dust depletions and reddening at z~1
• Towards the statistical detection of the warm-hot intergalactic medium in inter-cluster filaments of the cosmic web
• Warm-hot Gas in X-ray Bright Galaxy Clusters and the H I-deficient Circumgalactic Medium in Dense Environments
• Warm Gas in the Virgo Cluster: I. Distribution of Lya Absorbers
• Filaments in VIPERS: galaxy quenching in the infalling regions of groups
• A possible Chandra and Hubble Space Telescope detection of extragalactic WHIM towards PG 1116+215
• The Impact of the Group Environment on the OVI Circumgalactic Medium
• Crowded Field Galaxy Photometry: Precision Colors in the CLASH Clusters
• Adaptive mesh refinement simulations of a galaxy cluster merger - I. Resolving and modelling the turbulent flow in the cluster outskirts
• The Influence of Environment on the Circumgalactic Medium
• Abell 2744: Too much substructure for Lambda CDM?
• Wide-Field Optical Spectroscopy of Abell 133: A Search for Filaments Reported in X-ray Observations
• Lyman-alpha Absorbers and the Coma Cluster
• ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra
• Warm Gas in and Around Simulated Galaxy Clusters as Probed by Absorption Lines
• Multi-wavelength mock observations of the WHIM in a simulated galaxy cluster
• Scaling Relations and X-ray Properties of Moderate-Luminosity Galaxy Clusters from 0.3 < z < 0.6 with XMM-Newton
• The Ultraviolet Detection of Diffuse Gas in Galaxy Groups
• X-ray mapping the outer regions of galaxy clusters at z= 0.23 and 0.45
• Discovery of an HI-rich Gas Reservoir in the Outskirts of SZ-effect Selected Clusters
• Detection of Metal-Rich, Cool-Warm Gas in the Outskirts of Galaxy Clusters

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• Simulating Groups and the IntraGroup Medium: The Surprisingly Complex and Rich Middle Ground Between Clusters and Galaxies
• First detection of stacked X-ray emission from cosmic web filaments
• Density and temperature of cosmic-web filaments on scales of tens of megaparsecs
• Relative distribution of dark matter, gas, and stars around cosmic filaments in the IllustrisTNG simulation
• Discovery of a Supercluster in the eROSITA Final Equatorial Depth Survey: X-ray Properties, Radio Halo, and Double Relics
• Properties of clumps and filaments around galaxy clusters
• How complex is the cosmic web?
• The Power of the Cosmic Web
• Stellar mass measurements in Abell 133 with Magellan / IMACS