Mar 15 – 20, 2020
Europe/Berlin timezone

Additional clumps, groups and clusters in the A3391/95 eROSITA observation

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The eROSITA observation of the interacting A3391/95 galaxy cluster system has revealed an impressive overview of its surroundings. In approximately 14 square degrees of sky area with a nominal exposure of several ks over most of the area in the 0.2—2 keV energy band, we have found more than 50 extended objects. These objects are mainly fore- and background galaxy groups and clusters as well as a non-negligible number of clumps, which are presumably falling onto the main galaxy cluster system. In this work, we present some X-ray properties of the most prominent objects as well as a preliminary estimation of the impact of nearby large-scale structures, like A3391/95, will have on the eRASS cluster selection function.

Presenter status eROSITA consortium member

Primary author


Nicolas Clerc (IRAP) Thomas H. Reiprich (AIfA, University of Bonn) Dr Dominique Eckert Florian Pacaud (AIfA, University of Bonn) Dr Esra Bulbul (MPE) Melih Kara

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