{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:JIHJI35GAFDRN4F6KQWFCMHMBT","short_pith_number":"pith:JIHJI35G","schema_version":"1.0","canonical_sha256":"4a0e946fa6014716f0be542c5130ec0cde9edf174aa95132305d8689376c6bfe","source":{"kind":"arxiv","id":"1909.12888","version":2},"attestation_state":"computed","paper":{"title":"Cool-Core Cycles and Phoenix","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Arif Babul, Brian W. O'Shea, Deovrat Prasad, G. Mark Voit, Prateek Sharma","submitted_at":"2019-09-27T19:55:56Z","abstract_excerpt":"Recent observations show that the star formation rate (SFR) in the {\\it Phoenix} cluster's central galaxy is $\\sim 500$ M$_\\odot$ yr$^{-1}$. Even though {\\it Phoenix} is a massive cluster ($M_{200} \\approx 2.0\\times 10^{15}$ M$_\\odot$; $z\\approx 0.6$) such a high central SFR is not expected in a scenario in which feedback from an active galactic nucleus (AGN) maintains the intracluster medium (ICM) in a state of rough thermal balance. It has been argued that either AGN feedback saturates in very massive clusters or the central supermassive black hole (SMBH) is too small to produce enough kinet"},"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":"1909.12888","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-09-27T19:55:56Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"93dd32506b4b290ebde314c4ea19a46517fb3507c9678715e0254102d2e632b7","abstract_canon_sha256":"cea618338a087a0d5bae1fb1a5357c79ec59f2aae0aa32d4a0f47f2d8e2679fe"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:02:04.576213Z","signature_b64":"L6khLH0RYtL6c7X9YyPqWzRIi68XOFkJQ+cTVPBfCwP7bRry79/tFtbOBKTzvUw1k9fGOzds2KHT5/jJdy4CAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4a0e946fa6014716f0be542c5130ec0cde9edf174aa95132305d8689376c6bfe","last_reissued_at":"2026-07-05T01:02:04.575509Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:02:04.575509Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cool-Core Cycles and Phoenix","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Arif Babul, Brian W. O'Shea, Deovrat Prasad, G. Mark Voit, Prateek Sharma","submitted_at":"2019-09-27T19:55:56Z","abstract_excerpt":"Recent observations show that the star formation rate (SFR) in the {\\it Phoenix} cluster's central galaxy is $\\sim 500$ M$_\\odot$ yr$^{-1}$. Even though {\\it Phoenix} is a massive cluster ($M_{200} \\approx 2.0\\times 10^{15}$ M$_\\odot$; $z\\approx 0.6$) such a high central SFR is not expected in a scenario in which feedback from an active galactic nucleus (AGN) maintains the intracluster medium (ICM) in a state of rough thermal balance. It has been argued that either AGN feedback saturates in very massive clusters or the central supermassive black hole (SMBH) is too small to produce enough kinet"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.12888","kind":"arxiv","version":2},"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/1909.12888/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":"1909.12888","created_at":"2026-07-05T01:02:04.575568+00:00"},{"alias_kind":"arxiv_version","alias_value":"1909.12888v2","created_at":"2026-07-05T01:02:04.575568+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.12888","created_at":"2026-07-05T01:02:04.575568+00:00"},{"alias_kind":"pith_short_12","alias_value":"JIHJI35GAFDR","created_at":"2026-07-05T01:02:04.575568+00:00"},{"alias_kind":"pith_short_16","alias_value":"JIHJI35GAFDRN4F6","created_at":"2026-07-05T01:02:04.575568+00:00"},{"alias_kind":"pith_short_8","alias_value":"JIHJI35G","created_at":"2026-07-05T01:02:04.575568+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2502.08619","citing_title":"Directly Imaging the Cooling Flow in the Phoenix Cluster","ref_index":43,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JIHJI35GAFDRN4F6KQWFCMHMBT","json":"https://pith.science/pith/JIHJI35GAFDRN4F6KQWFCMHMBT.json","graph_json":"https://pith.science/api/pith-number/JIHJI35GAFDRN4F6KQWFCMHMBT/graph.json","events_json":"https://pith.science/api/pith-number/JIHJI35GAFDRN4F6KQWFCMHMBT/events.json","paper":"https://pith.science/paper/JIHJI35G"},"agent_actions":{"view_html":"https://pith.science/pith/JIHJI35GAFDRN4F6KQWFCMHMBT","download_json":"https://pith.science/pith/JIHJI35GAFDRN4F6KQWFCMHMBT.json","view_paper":"https://pith.science/paper/JIHJI35G","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1909.12888&json=true","fetch_graph":"https://pith.science/api/pith-number/JIHJI35GAFDRN4F6KQWFCMHMBT/graph.json","fetch_events":"https://pith.science/api/pith-number/JIHJI35GAFDRN4F6KQWFCMHMBT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JIHJI35GAFDRN4F6KQWFCMHMBT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JIHJI35GAFDRN4F6KQWFCMHMBT/action/storage_attestation","attest_author":"https://pith.science/pith/JIHJI35GAFDRN4F6KQWFCMHMBT/action/author_attestation","sign_citation":"https://pith.science/pith/JIHJI35GAFDRN4F6KQWFCMHMBT/action/citation_signature","submit_replication":"https://pith.science/pith/JIHJI35GAFDRN4F6KQWFCMHMBT/action/replication_record"}},"created_at":"2026-07-05T01:02:04.575568+00:00","updated_at":"2026-07-05T01:02:04.575568+00:00"}