{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:65Z4WR4XOGVIKTQQMP7GAM4ATU","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":"73121c95a1026c41c5e18c67389098af44b27db3585a0985496b36d01d0de133","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-06-04T20:00:01Z","title_canon_sha256":"e6d9e6e55490f4207827f76c2c6c0be429d9c955ddb502067684c9e2fc3ea900"},"schema_version":"1.0","source":{"id":"1306.0900","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.0900","created_at":"2026-05-18T03:19:03Z"},{"alias_kind":"arxiv_version","alias_value":"1306.0900v1","created_at":"2026-05-18T03:19:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.0900","created_at":"2026-05-18T03:19:03Z"},{"alias_kind":"pith_short_12","alias_value":"65Z4WR4XOGVI","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"65Z4WR4XOGVIKTQQ","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"65Z4WR4X","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:e79068363e2326dc343c0d9a276b363db91fd94555c2d37c3b2c5e4bf84fba78","target":"graph","created_at":"2026-05-18T03:19:03Z","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":"Gas clouds are present in the Galactic centre, where they orbit around the supermassive black hole. Collisions between these clumps reduce their angular momentum, and as a result some of the clumps are set on a plunging trajectory. Constraints can be imposed on the nature of past accretion events based on the currently observed X-ray reflection from the molecular clouds. We discuss accretion of clouds in the context of enhanced activity of Sgr A* during the past few hundred years. We put forward a scenario according to which gas clouds bring material close to the horizon of the black hole on <","authors_text":"Bozena Czerny, Devaky Kunneriath, Tapas K. Das, Vladimir Karas","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-06-04T20:00:01Z","title":"Multiple accretion events as a trigger for Sgr A* activity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.0900","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":"sha256:71aa1d98cbaf5102e4b142799bafae7832582ac695cbecd24aed0d99e221314c","target":"record","created_at":"2026-05-18T03:19:03Z","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":"73121c95a1026c41c5e18c67389098af44b27db3585a0985496b36d01d0de133","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-06-04T20:00:01Z","title_canon_sha256":"e6d9e6e55490f4207827f76c2c6c0be429d9c955ddb502067684c9e2fc3ea900"},"schema_version":"1.0","source":{"id":"1306.0900","kind":"arxiv","version":1}},"canonical_sha256":"f773cb479771aa854e1063fe6033809d39b296b96017f585ea9996a703b10efc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f773cb479771aa854e1063fe6033809d39b296b96017f585ea9996a703b10efc","first_computed_at":"2026-05-18T03:19:03.950966Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:19:03.950966Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/Fk2lYQoN2fbUFb0ePeUdGIXCvY8tW+Jwg5dhu675ABnJ5c7U+KuEbi9SRWVXIX/3/sOb3CHEZUZNw7hTZl2DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:19:03.951668Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.0900","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71aa1d98cbaf5102e4b142799bafae7832582ac695cbecd24aed0d99e221314c","sha256:e79068363e2326dc343c0d9a276b363db91fd94555c2d37c3b2c5e4bf84fba78"],"state_sha256":"3756816012ee6a25e7a637297d2b344e0b4a4a9bc4ee21766e5bccfad409c543"}