{"paper":{"title":"A study of the core of the Shapley Concentration: II. ROSAT observation of A3558","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.Malizia, E.Zucca, G.Vettolani, G.Zamorani, R.Scaramella, S.Bardelli","submitted_at":"1995-06-03T05:47:54Z","abstract_excerpt":"We present the results of a pointed ROSAT PSPC observation of the cluster A3558 which is part of the core of the Shapley Concentration. The X-ray brightness distribution can be fitted as the sum of an elliptical King law, with a major core radius of about 0.20 Mpc and an axial ratio 0.72, and a Gaussian central source associated with the cD galaxy. Among the several discrete sources present in the field, two correspond to the poor clusters SC 1327-312 and SC 1329-313, at about the same redshift as A3558, and two other sources are identified with bright galaxies, which are also part of the core"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9506019","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/9506019/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}