A hot X-ray filament associated with A3017 galaxy cluster

Abstract

Recent simulations and observations have shown large scale filaments in the cosmic web connecting nodes, with accreting materials (baryonic and dark matter) flowing through them. Current high sensitivity observations also show that the propagation of shocks through filaments can heat them up, and make filaments visible between two or more galaxy clusters or around massive clusters, based on optical and/or X-ray observations. We are reporting here the special case of the cluster A3017 associated with a hot filament. The temperature of the filament is 3.4${}_{+1.30}^{-0.77}$ ~keV and its length is $\sim$ 1 Mpc. We have analysed its archival {\it Chandra} data and report various properties. We also analysed GMRT 235/610 MHz radio data. Radio observations have revealed symmetric two-sided lobes which fill cavities in the A3017 cluster core region, associated with central AGN. In the radio map, we also noticed a peculiar linear vertical radio structure in the X-ray filament region which might be associated with a cosmic filament shock. This radio structure could be a radio phoenix or old plasma where an old relativistic population is re-accelerated by shock propagation. Finally we put an upper limit on the radio luminosity of the filament region.

References in corpus (8)

• Heating Hot Atmospheres with Active Galactic Nuclei
• Shocks and cold fronts in galaxy clusters
• The origin of cold fronts in the cores of relaxed galaxy clusters
• Giant Ringlike Radio Structures Around Galaxy Cluster Abell 3376
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Cited by in corpus (7)

• 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
• Properties of Galaxies in Cosmic Filaments around the Virgo Cluster
• Unveiling the internal structure of Hercules supercluster
• A detailed study of X-ray cavities in the intracluster environment of the cool core cluster Abell 3017
• Interaction of the massive cluster system Abell 3016/3017 embedded in a cosmic filament
• The MeerKAT Galaxy Clusters Legacy Survey: star formation in massive clusters at 0.15 < z < 0.35
• A rare case of FR I interaction with a hot X-ray bridge in the A2384 galaxy cluster