{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2001:COB5JLRTRSTJJFT34TBHFILFV4","short_pith_number":"pith:COB5JLRT","schema_version":"1.0","canonical_sha256":"1383d4ae338ca694967be4c272a165af33be08a3f00906c5e0bca76676a07bc2","source":{"kind":"arxiv","id":"astro-ph/0102291","version":1},"attestation_state":"computed","paper":{"title":"Chandra Observation of RXJ1720.1+2638: a Nearly Relaxed Cluster with a Fast Moving Core?","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Vikhlinin, Cambridge, L. P. David, L. VanSpeybroeck (Harvard-Smithsonian Center for Astrophysics, M. Markevitch, P. Mazzotta, USA), W. R. Forman","submitted_at":"2001-02-16T00:30:40Z","abstract_excerpt":"We have analyzed the Chandra observation of the distant (z=0.164) galaxy cluster RXJ1720.1+2638 in which we find sharp features in the X-ray surface brightness on opposite sides of the X-ray peak: an edge at about 250 h_50^{-1} kpc to the South-East and a plateau at about 130 h_50^{-1} kpc to the North-West. The surface brightness edge and the plateau can be modeled as a gas density discontinuity (jump) and a slope change (break). The temperature profiles suggest that the jump and the break are the boundaries of a central, group-size (d=380h_50^{-1} kpc), dense, cold (T=4 keV) gas cloud, embed"},"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":"astro-ph/0102291","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-02-16T00:30:40Z","cross_cats_sorted":[],"title_canon_sha256":"d731d819eee08adece738afb97a00a62cea58ab74943c2235fb6a2d5f9871d0b","abstract_canon_sha256":"7013acf1007a641db9b0621be60e4897ae73a91cd5872cc79bf8811b96a61f5c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:22:44.598451Z","signature_b64":"Z4x1M9WivhEuiEF9ViD4ouuuY+Eb0tfUdlxCQPAhu5cSmrlxCAQw+19XrRiA1WlRxUA/5s7lKQ0iJdwqeVNeAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1383d4ae338ca694967be4c272a165af33be08a3f00906c5e0bca76676a07bc2","last_reissued_at":"2026-07-04T16:22:44.598032Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:22:44.598032Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Chandra Observation of RXJ1720.1+2638: a Nearly Relaxed Cluster with a Fast Moving Core?","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Vikhlinin, Cambridge, L. P. David, L. VanSpeybroeck (Harvard-Smithsonian Center for Astrophysics, M. Markevitch, P. Mazzotta, USA), W. R. Forman","submitted_at":"2001-02-16T00:30:40Z","abstract_excerpt":"We have analyzed the Chandra observation of the distant (z=0.164) galaxy cluster RXJ1720.1+2638 in which we find sharp features in the X-ray surface brightness on opposite sides of the X-ray peak: an edge at about 250 h_50^{-1} kpc to the South-East and a plateau at about 130 h_50^{-1} kpc to the North-West. The surface brightness edge and the plateau can be modeled as a gas density discontinuity (jump) and a slope change (break). The temperature profiles suggest that the jump and the break are the boundaries of a central, group-size (d=380h_50^{-1} kpc), dense, cold (T=4 keV) gas cloud, embed"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0102291","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/0102291/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0102291","created_at":"2026-07-04T16:22:44.598089+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0102291v1","created_at":"2026-07-04T16:22:44.598089+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0102291","created_at":"2026-07-04T16:22:44.598089+00:00"},{"alias_kind":"pith_short_12","alias_value":"COB5JLRTRSTJ","created_at":"2026-07-04T16:22:44.598089+00:00"},{"alias_kind":"pith_short_16","alias_value":"COB5JLRTRSTJJFT3","created_at":"2026-07-04T16:22:44.598089+00:00"},{"alias_kind":"pith_short_8","alias_value":"COB5JLRT","created_at":"2026-07-04T16:22:44.598089+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/COB5JLRTRSTJJFT34TBHFILFV4","json":"https://pith.science/pith/COB5JLRTRSTJJFT34TBHFILFV4.json","graph_json":"https://pith.science/api/pith-number/COB5JLRTRSTJJFT34TBHFILFV4/graph.json","events_json":"https://pith.science/api/pith-number/COB5JLRTRSTJJFT34TBHFILFV4/events.json","paper":"https://pith.science/paper/COB5JLRT"},"agent_actions":{"view_html":"https://pith.science/pith/COB5JLRTRSTJJFT34TBHFILFV4","download_json":"https://pith.science/pith/COB5JLRTRSTJJFT34TBHFILFV4.json","view_paper":"https://pith.science/paper/COB5JLRT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0102291&json=true","fetch_graph":"https://pith.science/api/pith-number/COB5JLRTRSTJJFT34TBHFILFV4/graph.json","fetch_events":"https://pith.science/api/pith-number/COB5JLRTRSTJJFT34TBHFILFV4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/COB5JLRTRSTJJFT34TBHFILFV4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/COB5JLRTRSTJJFT34TBHFILFV4/action/storage_attestation","attest_author":"https://pith.science/pith/COB5JLRTRSTJJFT34TBHFILFV4/action/author_attestation","sign_citation":"https://pith.science/pith/COB5JLRTRSTJJFT34TBHFILFV4/action/citation_signature","submit_replication":"https://pith.science/pith/COB5JLRTRSTJJFT34TBHFILFV4/action/replication_record"}},"created_at":"2026-07-04T16:22:44.598089+00:00","updated_at":"2026-07-04T16:22:44.598089+00:00"}