{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:O7L4YBDZX2LNB27NH56NQFYJ5I","short_pith_number":"pith:O7L4YBDZ","schema_version":"1.0","canonical_sha256":"77d7cc0479be96d0ebed3f7cd81709ea29632f28d3b8b30910bd3cb7192fa401","source":{"kind":"arxiv","id":"1509.04275","version":1},"attestation_state":"computed","paper":{"title":"Investigating the cores of fossil systems with Chandra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE"],"primary_cat":"astro-ph.CO","authors_text":"G. Schellenberger, J. S. Sanders, T. H. Reiprich, V. Bharadwaj","submitted_at":"2015-09-14T20:08:25Z","abstract_excerpt":"We investigate the cores of fossil galaxy groups and clusters (`fossil systems') using archival Chandra data for a sample of 17 fossil systems. We determined the cool-core fraction for fossils via three observable diagnostics, the central cooling time, cuspiness, and concentration parameter. We quantified the dynamical state of the fossils by the X-ray peak/brightest cluster galaxy (BCG), and the X-ray peak/emission weighted centre separations. We studied the X-ray emission coincident with the BCG to detect the presence of potential thermal coronae. A deprojection analysis was performed for z "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1509.04275","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-09-14T20:08:25Z","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"cb49c4c7e29575ff874632026b0a23df4318f081d787181cf9ec0d7b51bb9c3d","abstract_canon_sha256":"14a329862dee2aa71395f953ebdbe8797560183154a37be57696d31aa8732e56"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:58.433815Z","signature_b64":"4/JJMEdFNwpJVip0HZkZRF7GLLeR8i1yzFwQn/tVUhzMBXByN3O0y7Hsb40vYx75BlQA5oFF29sDMwq+L6kdCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"77d7cc0479be96d0ebed3f7cd81709ea29632f28d3b8b30910bd3cb7192fa401","last_reissued_at":"2026-05-18T01:22:58.433262Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:58.433262Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Investigating the cores of fossil systems with Chandra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE"],"primary_cat":"astro-ph.CO","authors_text":"G. Schellenberger, J. S. Sanders, T. H. Reiprich, V. Bharadwaj","submitted_at":"2015-09-14T20:08:25Z","abstract_excerpt":"We investigate the cores of fossil galaxy groups and clusters (`fossil systems') using archival Chandra data for a sample of 17 fossil systems. We determined the cool-core fraction for fossils via three observable diagnostics, the central cooling time, cuspiness, and concentration parameter. We quantified the dynamical state of the fossils by the X-ray peak/brightest cluster galaxy (BCG), and the X-ray peak/emission weighted centre separations. We studied the X-ray emission coincident with the BCG to detect the presence of potential thermal coronae. A deprojection analysis was performed for z "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.04275","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1509.04275","created_at":"2026-05-18T01:22:58.433334+00:00"},{"alias_kind":"arxiv_version","alias_value":"1509.04275v1","created_at":"2026-05-18T01:22:58.433334+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.04275","created_at":"2026-05-18T01:22:58.433334+00:00"},{"alias_kind":"pith_short_12","alias_value":"O7L4YBDZX2LN","created_at":"2026-05-18T12:29:34.919912+00:00"},{"alias_kind":"pith_short_16","alias_value":"O7L4YBDZX2LNB27N","created_at":"2026-05-18T12:29:34.919912+00:00"},{"alias_kind":"pith_short_8","alias_value":"O7L4YBDZ","created_at":"2026-05-18T12:29:34.919912+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/O7L4YBDZX2LNB27NH56NQFYJ5I","json":"https://pith.science/pith/O7L4YBDZX2LNB27NH56NQFYJ5I.json","graph_json":"https://pith.science/api/pith-number/O7L4YBDZX2LNB27NH56NQFYJ5I/graph.json","events_json":"https://pith.science/api/pith-number/O7L4YBDZX2LNB27NH56NQFYJ5I/events.json","paper":"https://pith.science/paper/O7L4YBDZ"},"agent_actions":{"view_html":"https://pith.science/pith/O7L4YBDZX2LNB27NH56NQFYJ5I","download_json":"https://pith.science/pith/O7L4YBDZX2LNB27NH56NQFYJ5I.json","view_paper":"https://pith.science/paper/O7L4YBDZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1509.04275&json=true","fetch_graph":"https://pith.science/api/pith-number/O7L4YBDZX2LNB27NH56NQFYJ5I/graph.json","fetch_events":"https://pith.science/api/pith-number/O7L4YBDZX2LNB27NH56NQFYJ5I/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/O7L4YBDZX2LNB27NH56NQFYJ5I/action/timestamp_anchor","attest_storage":"https://pith.science/pith/O7L4YBDZX2LNB27NH56NQFYJ5I/action/storage_attestation","attest_author":"https://pith.science/pith/O7L4YBDZX2LNB27NH56NQFYJ5I/action/author_attestation","sign_citation":"https://pith.science/pith/O7L4YBDZX2LNB27NH56NQFYJ5I/action/citation_signature","submit_replication":"https://pith.science/pith/O7L4YBDZX2LNB27NH56NQFYJ5I/action/replication_record"}},"created_at":"2026-05-18T01:22:58.433334+00:00","updated_at":"2026-05-18T01:22:58.433334+00:00"}