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Close-up view of an ongoing merger between the NGC 4839 group and the Coma cluster

Published online by Cambridge University Press:  07 April 2020

Natalia Lyskova Open the ORCID record for Natalia Lyskova [Opens in a new window] ,
Eugene Churazov ,
Congyao Zhang ,
William Forman Open the ORCID record for William Forman [Opens in a new window]  and
Christine Jones
Natalia Lyskova
Affiliation:
National Research University Higher School of Economics, Myasnitskaya str. 20, Moscow101000, Russia Space Research Institute (IKI), Profsoyuznaya str. 84/32, Moscow117997, Russia email: natalya.lyskova@gmail.com
Eugene Churazov
Affiliation:
Space Research Institute (IKI), Profsoyuznaya str. 84/32, Moscow117997, Russia email: natalya.lyskova@gmail.com Max Planck Institute for Astrophysics, Karl-Schwarzschild-Strasse 1, 85741Garching, Germany
Congyao Zhang
Affiliation:
Max Planck Institute for Astrophysics, Karl-Schwarzschild-Strasse 1, 85741Garching, Germany
William Forman
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA02138, USA
Christine Jones
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA02138, USA
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Abstract

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We analyse archival XMM-Newton observations of the massive galaxy group NGC 4839 falling into the Coma cluster core, which reveal a complex morphology for the merger. By comparing high quality X-ray maps of the merging subcluster with SPH simulations, we propose an infall scenario which qualitatively reproduces the observed structure of the NGC 4839 tail.

Keywords

galaxies: clusters: individual (Abell 1656 (Coma), NGC 4839 group)X-rays: galaxies: clusters

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