{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:7LMYXXWMKIJW37IFA7VUMXFLBH","short_pith_number":"pith:7LMYXXWM","canonical_record":{"source":{"id":"0810.2723","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-15T15:18:33Z","cross_cats_sorted":[],"title_canon_sha256":"d6b49157b03dc032683bf689908798e97b314bb65afe44d5b105ce8af8a6312f","abstract_canon_sha256":"3c24e5bb6625f41e0baa3e1c78877e3dc1951440b1b8cd0339ae52a188b79828"},"schema_version":"1.0"},"canonical_sha256":"fad98bdecc52136dfd0507eb465cab09e9be8f4887d8388ed6ce2989c7feadaa","source":{"kind":"arxiv","id":"0810.2723","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.2723","created_at":"2026-07-04T17:13:14Z"},{"alias_kind":"arxiv_version","alias_value":"0810.2723v1","created_at":"2026-07-04T17:13:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.2723","created_at":"2026-07-04T17:13:14Z"},{"alias_kind":"pith_short_12","alias_value":"7LMYXXWMKIJW","created_at":"2026-07-04T17:13:14Z"},{"alias_kind":"pith_short_16","alias_value":"7LMYXXWMKIJW37IF","created_at":"2026-07-04T17:13:14Z"},{"alias_kind":"pith_short_8","alias_value":"7LMYXXWM","created_at":"2026-07-04T17:13:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:7LMYXXWMKIJW37IFA7VUMXFLBH","target":"record","payload":{"canonical_record":{"source":{"id":"0810.2723","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-15T15:18:33Z","cross_cats_sorted":[],"title_canon_sha256":"d6b49157b03dc032683bf689908798e97b314bb65afe44d5b105ce8af8a6312f","abstract_canon_sha256":"3c24e5bb6625f41e0baa3e1c78877e3dc1951440b1b8cd0339ae52a188b79828"},"schema_version":"1.0"},"canonical_sha256":"fad98bdecc52136dfd0507eb465cab09e9be8f4887d8388ed6ce2989c7feadaa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:13:14.344367Z","signature_b64":"wMaRcX+Oun6i4s/+IKkrKU7YaaZjd2PoWTDeqzVMB1Ky/pd321wmOtSKajLCL4gYARExTg/+zgByhxWMiZNXBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fad98bdecc52136dfd0507eb465cab09e9be8f4887d8388ed6ce2989c7feadaa","last_reissued_at":"2026-07-04T17:13:14.343966Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:13:14.343966Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0810.2723","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":"2026-07-04T17:13:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wiZauUUpPfk+ZMjNCgmza6pK+Y0s4nuGB0XV1L7wV98oSUlZzGULJETcKSKHriadhibm2lGNIr54ito4/ig/Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T09:26:05.088301Z"},"content_sha256":"d6690bd858d850d5797411dd76d47e7d0550ca8faf2eee13b81031c8cad3d3ec","schema_version":"1.0","event_id":"sha256:d6690bd858d850d5797411dd76d47e7d0550ca8faf2eee13b81031c8cad3d3ec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:7LMYXXWMKIJW37IFA7VUMXFLBH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Star Formation Around Super-Massive Black Holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"I.A. Bonnell (St Andrews), W.K.M. Rice (Edinburgh)","submitted_at":"2008-10-15T15:18:33Z","abstract_excerpt":"The presence of young massive stars orbiting on eccentric rings within a few tenths of a parsec of the supermassive black hole in the Galactic centre is challenging for theories of star formation. The high tidal shear from the black hole should tear apart the molecular clouds that form stars elsewhere in the Galaxy, while transporting the stars to the Galactic centre also appears unlikely during their stellar lifetimes. We present numerical simulations of the infall of a giant molecular cloud that interacts with the black hole. The transfer of energy during closest approach allows part of the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.2723","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/0810.2723/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:13:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/mvjsWMgU8k2UcB2TNu0RCC3WxHy78YX+L7F9ImzrMRH2cNNiwqvLXy6WgBOyTnT18oZj3ei+LvPZFHIYMETBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T09:26:05.088704Z"},"content_sha256":"9d7aa1ae1bb8fe6ef21c5d7f98fff882281a05d1db16421de406963a3c0e27c2","schema_version":"1.0","event_id":"sha256:9d7aa1ae1bb8fe6ef21c5d7f98fff882281a05d1db16421de406963a3c0e27c2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7LMYXXWMKIJW37IFA7VUMXFLBH/bundle.json","state_url":"https://pith.science/pith/7LMYXXWMKIJW37IFA7VUMXFLBH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7LMYXXWMKIJW37IFA7VUMXFLBH/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":"2026-07-07T09:26:05Z","links":{"resolver":"https://pith.science/pith/7LMYXXWMKIJW37IFA7VUMXFLBH","bundle":"https://pith.science/pith/7LMYXXWMKIJW37IFA7VUMXFLBH/bundle.json","state":"https://pith.science/pith/7LMYXXWMKIJW37IFA7VUMXFLBH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7LMYXXWMKIJW37IFA7VUMXFLBH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:7LMYXXWMKIJW37IFA7VUMXFLBH","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":"3c24e5bb6625f41e0baa3e1c78877e3dc1951440b1b8cd0339ae52a188b79828","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-15T15:18:33Z","title_canon_sha256":"d6b49157b03dc032683bf689908798e97b314bb65afe44d5b105ce8af8a6312f"},"schema_version":"1.0","source":{"id":"0810.2723","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.2723","created_at":"2026-07-04T17:13:14Z"},{"alias_kind":"arxiv_version","alias_value":"0810.2723v1","created_at":"2026-07-04T17:13:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.2723","created_at":"2026-07-04T17:13:14Z"},{"alias_kind":"pith_short_12","alias_value":"7LMYXXWMKIJW","created_at":"2026-07-04T17:13:14Z"},{"alias_kind":"pith_short_16","alias_value":"7LMYXXWMKIJW37IF","created_at":"2026-07-04T17:13:14Z"},{"alias_kind":"pith_short_8","alias_value":"7LMYXXWM","created_at":"2026-07-04T17:13:14Z"}],"graph_snapshots":[{"event_id":"sha256:9d7aa1ae1bb8fe6ef21c5d7f98fff882281a05d1db16421de406963a3c0e27c2","target":"graph","created_at":"2026-07-04T17:13:14Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0810.2723/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The presence of young massive stars orbiting on eccentric rings within a few tenths of a parsec of the supermassive black hole in the Galactic centre is challenging for theories of star formation. The high tidal shear from the black hole should tear apart the molecular clouds that form stars elsewhere in the Galaxy, while transporting the stars to the Galactic centre also appears unlikely during their stellar lifetimes. We present numerical simulations of the infall of a giant molecular cloud that interacts with the black hole. The transfer of energy during closest approach allows part of the ","authors_text":"I.A. Bonnell (St Andrews), W.K.M. Rice (Edinburgh)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-15T15:18:33Z","title":"Star Formation Around Super-Massive Black Holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.2723","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:d6690bd858d850d5797411dd76d47e7d0550ca8faf2eee13b81031c8cad3d3ec","target":"record","created_at":"2026-07-04T17:13:14Z","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":"3c24e5bb6625f41e0baa3e1c78877e3dc1951440b1b8cd0339ae52a188b79828","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-15T15:18:33Z","title_canon_sha256":"d6b49157b03dc032683bf689908798e97b314bb65afe44d5b105ce8af8a6312f"},"schema_version":"1.0","source":{"id":"0810.2723","kind":"arxiv","version":1}},"canonical_sha256":"fad98bdecc52136dfd0507eb465cab09e9be8f4887d8388ed6ce2989c7feadaa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fad98bdecc52136dfd0507eb465cab09e9be8f4887d8388ed6ce2989c7feadaa","first_computed_at":"2026-07-04T17:13:14.343966Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:13:14.343966Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wMaRcX+Oun6i4s/+IKkrKU7YaaZjd2PoWTDeqzVMB1Ky/pd321wmOtSKajLCL4gYARExTg/+zgByhxWMiZNXBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:13:14.344367Z","signed_message":"canonical_sha256_bytes"},"source_id":"0810.2723","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d6690bd858d850d5797411dd76d47e7d0550ca8faf2eee13b81031c8cad3d3ec","sha256:9d7aa1ae1bb8fe6ef21c5d7f98fff882281a05d1db16421de406963a3c0e27c2"],"state_sha256":"f29a30091536943bdb1d452041a8e8bda7dd9b946b522aded0e5a83af50c0675"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jECM+ksARi8TvkuS7GJaVVROO0jcwf9nS4oxD/keAKqcAQGthnFIQbaB0Lhr2gaQDyj6K6K1TO4fHcXGCpGxBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T09:26:05.090691Z","bundle_sha256":"006cc81c9cc69399358cdf86271bd1acfba380eb80ca8a1945921d119aafcc80"}}