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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A rare case of FR I interaction with a hot X-ray bridge in the A2384 galaxy cluster

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Author(s):
Parekh, V [1, 2] ; Lagana, T. F. [3] ; Thorat, K. [1, 2] ; van der Heyden, K. [4] ; Iqbal, A. [5] ; Durret, F. [6]
Total Authors: 6
Affiliation:
[1] Rhodes Univ, Dept Phys & Elect, ZA-6140 Grahamstown - South Africa
[2] SARAO, 2 Fir St, Black River Pk, ZA-7925 Cape Town - South Africa
[3] Univ Cidade Sao Paulo, Univ Cruzeiro Sul, Nucleo Astrofis, R Galvao Bueno 868, BR-01506000 Sao Paulo, SP - Brazil
[4] Univ Cape Town, Dept Astron, Private Bag X3, ZA-7701 Cape Town - South Africa
[5] Raman Res Inst, CV Raman Ave, Bangalore 560080, Karnataka - India
[6] Sorbonne Univ, UMR 7095, CNRS, Inst Astrophys Paris, 98 Bis Bd Arago, F-75014 Paris - France
Total Affiliations: 6
Document type: Journal article
Source: Monthly Notices of the Royal Astronomical Society; v. 491, n. 2, p. 2605-2616, JAN 2020.
Web of Science Citations: 0
Abstract

Clusters of varying mass ratios can merge and the process significantly disturbs the cluster environments and alters their global properties. Active radio galaxies are another phenomenon that can also affect cluster environments. Radio jets can interact with the intracluster medium (ICM) and locally affect its properties. Abell 2384 (hereafter A2384) is a unique system that has a dense, hot X-ray filament or bridge connecting the two unequal mass clusters A2384(N) and A2384(S). The analysis of its morphology suggests that A2384 is a post-merger system where A2384(S) has already interacted with the A2384(N), and as a result hot gas has been stripped over an similar to 1 Mpc region between the two bodies. We have obtained its 325 MHzGMRT data, and we detected a peculiar FR I type radio galaxy which is a part of the A2384(S). One of its radio lobes interacts with the hot X-ray bridge and pushes the hot gas in the opposite direction. This results in displacement in the bridge close to A2384(S). Based on Chandra and XMM-Newton X-ray observations, we notice a temperature and entropy enhancement at the radio lobe-X-ray plasma interaction site, which further suggests that the radio lobe is changing thermal plasma properties. We have also studied the radio properties of the FR I radio galaxy, and found that the size and radio luminosity of the interacting north lobe of the FR I galaxy are lower than those of the accompanying south lobe. (AU)

FAPESP's process: 18/02626-8 - X-ray astronomy: the history of chemical enrichment of groups and clusters of galaxies
Grantee:Tatiana Ferraz Laganá
Support type: Regular Research Grants