{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:A3ANZJGP4QYJAXJIJJGHXLYJDI","short_pith_number":"pith:A3ANZJGP","canonical_record":{"source":{"id":"0910.3691","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-19T20:37:48Z","cross_cats_sorted":[],"title_canon_sha256":"6b957142ac2da5d0357fc73172a5d7d7bb98ffd58f69b0feeb4aee2330a956e0","abstract_canon_sha256":"a0db405b2e39d87ad87270c796b9f2f4d6bc6bd453ed63d0ca206abb39700f03"},"schema_version":"1.0"},"canonical_sha256":"06c0dca4cfe430905d284a4c7baf091a2d5cef06989bf0af9d913d2ac5ec1518","source":{"kind":"arxiv","id":"0910.3691","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.3691","created_at":"2026-05-18T02:11:14Z"},{"alias_kind":"arxiv_version","alias_value":"0910.3691v1","created_at":"2026-05-18T02:11:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.3691","created_at":"2026-05-18T02:11:14Z"},{"alias_kind":"pith_short_12","alias_value":"A3ANZJGP4QYJ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"A3ANZJGP4QYJAXJI","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"A3ANZJGP","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:A3ANZJGP4QYJAXJIJJGHXLYJDI","target":"record","payload":{"canonical_record":{"source":{"id":"0910.3691","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-19T20:37:48Z","cross_cats_sorted":[],"title_canon_sha256":"6b957142ac2da5d0357fc73172a5d7d7bb98ffd58f69b0feeb4aee2330a956e0","abstract_canon_sha256":"a0db405b2e39d87ad87270c796b9f2f4d6bc6bd453ed63d0ca206abb39700f03"},"schema_version":"1.0"},"canonical_sha256":"06c0dca4cfe430905d284a4c7baf091a2d5cef06989bf0af9d913d2ac5ec1518","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:14.073553Z","signature_b64":"1uQquaLVXdW6ZuLNpnc+d5osT+U4KlRzck1V7sYd45HjEoj+uLJaFDphla+JgVWII/7xoa5SNwD8aYQEzVyYCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"06c0dca4cfe430905d284a4c7baf091a2d5cef06989bf0af9d913d2ac5ec1518","last_reissued_at":"2026-05-18T02:11:14.072703Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:14.072703Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.3691","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:11:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RM887+UoNgUsa0XUHyaVcAEKFl3MJCfVYLHB5bqOM5poXv0GG5+cYjb/44Q7dCo2iS+iB86UXp96DIlM7sgRAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T16:47:38.451385Z"},"content_sha256":"01c905e1a811341556fd0b236662ad3b76c76041b7549afd51adc3a9d3848093","schema_version":"1.0","event_id":"sha256:01c905e1a811341556fd0b236662ad3b76c76041b7549afd51adc3a9d3848093"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:A3ANZJGP4QYJAXJIJJGHXLYJDI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"AGN Feedback: Does it work?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Fabrizio Nicastro, Martin Elvis, Nancy Brickhouse, Rebecca Stoll, Smita Mathur, Yair Krongold","submitted_at":"2009-10-19T20:37:48Z","abstract_excerpt":"While feedback is important in theoretical models, we do not really know if it works in reality. Feedback from jets appears to be sufficient to keep the cooling flows in clusters from cooling too much and it may be sufficient to regulate black hole growth in dominant cluster galaxies. Only about 10% of all quasars, however, have powerful radio jets, so jet-related feedback cannot be generic. The outflows could potentially be a more common form of AGN feedback, but measuring mass and energy outflow rates is a challenging task, the main unknown being the location and geometry of the absorbing me"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.3691","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:11:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2qrrm6CRSdM+Q/GS31ndlFAt0Ve/jDnjP19GWHl3AhNI2g+Ja3km0iveM63tpH2Oq10czkXCroGLN1hQL/fHCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T16:47:38.452067Z"},"content_sha256":"75939f9b0ea5d34882e0151261cc59f61f86dd65a3538b22fe187867feea2ebd","schema_version":"1.0","event_id":"sha256:75939f9b0ea5d34882e0151261cc59f61f86dd65a3538b22fe187867feea2ebd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A3ANZJGP4QYJAXJIJJGHXLYJDI/bundle.json","state_url":"https://pith.science/pith/A3ANZJGP4QYJAXJIJJGHXLYJDI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A3ANZJGP4QYJAXJIJJGHXLYJDI/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-29T16:47:38Z","links":{"resolver":"https://pith.science/pith/A3ANZJGP4QYJAXJIJJGHXLYJDI","bundle":"https://pith.science/pith/A3ANZJGP4QYJAXJIJJGHXLYJDI/bundle.json","state":"https://pith.science/pith/A3ANZJGP4QYJAXJIJJGHXLYJDI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A3ANZJGP4QYJAXJIJJGHXLYJDI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:A3ANZJGP4QYJAXJIJJGHXLYJDI","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"a0db405b2e39d87ad87270c796b9f2f4d6bc6bd453ed63d0ca206abb39700f03","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-19T20:37:48Z","title_canon_sha256":"6b957142ac2da5d0357fc73172a5d7d7bb98ffd58f69b0feeb4aee2330a956e0"},"schema_version":"1.0","source":{"id":"0910.3691","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.3691","created_at":"2026-05-18T02:11:14Z"},{"alias_kind":"arxiv_version","alias_value":"0910.3691v1","created_at":"2026-05-18T02:11:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.3691","created_at":"2026-05-18T02:11:14Z"},{"alias_kind":"pith_short_12","alias_value":"A3ANZJGP4QYJ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"A3ANZJGP4QYJAXJI","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"A3ANZJGP","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:75939f9b0ea5d34882e0151261cc59f61f86dd65a3538b22fe187867feea2ebd","target":"graph","created_at":"2026-05-18T02:11:14Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"While feedback is important in theoretical models, we do not really know if it works in reality. Feedback from jets appears to be sufficient to keep the cooling flows in clusters from cooling too much and it may be sufficient to regulate black hole growth in dominant cluster galaxies. Only about 10% of all quasars, however, have powerful radio jets, so jet-related feedback cannot be generic. The outflows could potentially be a more common form of AGN feedback, but measuring mass and energy outflow rates is a challenging task, the main unknown being the location and geometry of the absorbing me","authors_text":"Fabrizio Nicastro, Martin Elvis, Nancy Brickhouse, Rebecca Stoll, Smita Mathur, Yair Krongold","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-19T20:37:48Z","title":"AGN Feedback: Does it work?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.3691","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:01c905e1a811341556fd0b236662ad3b76c76041b7549afd51adc3a9d3848093","target":"record","created_at":"2026-05-18T02:11:14Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"a0db405b2e39d87ad87270c796b9f2f4d6bc6bd453ed63d0ca206abb39700f03","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-19T20:37:48Z","title_canon_sha256":"6b957142ac2da5d0357fc73172a5d7d7bb98ffd58f69b0feeb4aee2330a956e0"},"schema_version":"1.0","source":{"id":"0910.3691","kind":"arxiv","version":1}},"canonical_sha256":"06c0dca4cfe430905d284a4c7baf091a2d5cef06989bf0af9d913d2ac5ec1518","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"06c0dca4cfe430905d284a4c7baf091a2d5cef06989bf0af9d913d2ac5ec1518","first_computed_at":"2026-05-18T02:11:14.072703Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:11:14.072703Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1uQquaLVXdW6ZuLNpnc+d5osT+U4KlRzck1V7sYd45HjEoj+uLJaFDphla+JgVWII/7xoa5SNwD8aYQEzVyYCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:11:14.073553Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.3691","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:01c905e1a811341556fd0b236662ad3b76c76041b7549afd51adc3a9d3848093","sha256:75939f9b0ea5d34882e0151261cc59f61f86dd65a3538b22fe187867feea2ebd"],"state_sha256":"e500974e71277ee32e8fd1656cf72c0aaef4a54f36e027ad57be3801ebcd5421"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r76wrSNVIr+ab8QFxKHw1emq7FG/T5g1RsQiLIUasjzaxasbBwd37L9ZsGihxopgeuqSa2U2en5wbQ330VlrBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T16:47:38.455524Z","bundle_sha256":"e2493227db5c17d0313c5909277f1b90354a7cf8cdf9de25a3a797c720c26c57"}}