{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:3AHHVYRE63YQ5FLB3GDJB2BNKA","short_pith_number":"pith:3AHHVYRE","canonical_record":{"source":{"id":"1809.01664","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-05T18:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"f0c04e997ae501e5505ec31d43a60cb632cdee4514e655993217abfe349c248d","abstract_canon_sha256":"6b414272d6e1b85132f279f465b452a0b759a307ba79f7d8f8ccddb9106478ea"},"schema_version":"1.0"},"canonical_sha256":"d80e7ae224f6f10e9561d98690e82d5027a4ddb8da072456c03282973d2985c3","source":{"kind":"arxiv","id":"1809.01664","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.01664","created_at":"2026-05-18T00:06:00Z"},{"alias_kind":"arxiv_version","alias_value":"1809.01664v1","created_at":"2026-05-18T00:06:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.01664","created_at":"2026-05-18T00:06:00Z"},{"alias_kind":"pith_short_12","alias_value":"3AHHVYRE63YQ","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"3AHHVYRE63YQ5FLB","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"3AHHVYRE","created_at":"2026-05-18T12:32:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:3AHHVYRE63YQ5FLB3GDJB2BNKA","target":"record","payload":{"canonical_record":{"source":{"id":"1809.01664","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-05T18:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"f0c04e997ae501e5505ec31d43a60cb632cdee4514e655993217abfe349c248d","abstract_canon_sha256":"6b414272d6e1b85132f279f465b452a0b759a307ba79f7d8f8ccddb9106478ea"},"schema_version":"1.0"},"canonical_sha256":"d80e7ae224f6f10e9561d98690e82d5027a4ddb8da072456c03282973d2985c3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:06:00.703579Z","signature_b64":"Fq3i8H2A5qcxyTFPQxd6V3hf3jI3vqcYoVOpFxBhyqFVkE9xZ7CdkeujYXFXTBVFG0WvtJrAwcDSK5ZGtVtsCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d80e7ae224f6f10e9561d98690e82d5027a4ddb8da072456c03282973d2985c3","last_reissued_at":"2026-05-18T00:06:00.703190Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:06:00.703190Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.01664","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":"2026-05-18T00:06:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gHjUqpRndqodoiJTO9pmBLmNJEfAnqbrBvXGoRt8CifopSMUiAl5UYmpet8fBVA5sQYuLkZXOlFJeXt3y2QyAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:38:02.948702Z"},"content_sha256":"c7e1ffb7959d51f5796bae5179b8c7123f2da49754fed7eba0a5b9b5a3d49ac8","schema_version":"1.0","event_id":"sha256:c7e1ffb7959d51f5796bae5179b8c7123f2da49754fed7eba0a5b9b5a3d49ac8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:3AHHVYRE63YQ5FLB3GDJB2BNKA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Weighing the IMBH candidate CO-0.40-0.22* in the Galactic Centre","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alessandro Ballone, Mario Pasquato, Michela Mapelli","submitted_at":"2018-09-05T18:00:02Z","abstract_excerpt":"The high velocity gradient observed in the compact cloud CO-0.40-0.22, at a projected distance of 60 pc from the centre of the Milky Way, has led its discoverers to identify the closeby mm continuum emitter, CO-0.40-0.22*, with an intermediate mass black hole (IMBH) candidate. We describe the interaction between CO-0.40-0.22 and the IMBH, by means of a simple analytical model and of hydrodynamical simulations. Through such calculation, we obtain a lower limit to the mass of CO-0.40-0.22* of few $10^4 \\times \\; M_{\\odot}$. This result tends to exclude the formation of such massive black hole in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.01664","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":"2026-05-18T00:06:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O8e1G6HZfF4e4Gi/6PubpBKzzeMfhztgkQsX404rPjZePk2xl3WQF9EIo6BjQ1i0tXjTS+HMWp+crcO+AAA8BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:38:02.949480Z"},"content_sha256":"ad431094af923db17cbba0e2a57554244e1a759c994ac5e887e3de3676047f32","schema_version":"1.0","event_id":"sha256:ad431094af923db17cbba0e2a57554244e1a759c994ac5e887e3de3676047f32"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3AHHVYRE63YQ5FLB3GDJB2BNKA/bundle.json","state_url":"https://pith.science/pith/3AHHVYRE63YQ5FLB3GDJB2BNKA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3AHHVYRE63YQ5FLB3GDJB2BNKA/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":"2026-05-27T07:38:02Z","links":{"resolver":"https://pith.science/pith/3AHHVYRE63YQ5FLB3GDJB2BNKA","bundle":"https://pith.science/pith/3AHHVYRE63YQ5FLB3GDJB2BNKA/bundle.json","state":"https://pith.science/pith/3AHHVYRE63YQ5FLB3GDJB2BNKA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3AHHVYRE63YQ5FLB3GDJB2BNKA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:3AHHVYRE63YQ5FLB3GDJB2BNKA","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":"6b414272d6e1b85132f279f465b452a0b759a307ba79f7d8f8ccddb9106478ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-05T18:00:02Z","title_canon_sha256":"f0c04e997ae501e5505ec31d43a60cb632cdee4514e655993217abfe349c248d"},"schema_version":"1.0","source":{"id":"1809.01664","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.01664","created_at":"2026-05-18T00:06:00Z"},{"alias_kind":"arxiv_version","alias_value":"1809.01664v1","created_at":"2026-05-18T00:06:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.01664","created_at":"2026-05-18T00:06:00Z"},{"alias_kind":"pith_short_12","alias_value":"3AHHVYRE63YQ","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"3AHHVYRE63YQ5FLB","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"3AHHVYRE","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:ad431094af923db17cbba0e2a57554244e1a759c994ac5e887e3de3676047f32","target":"graph","created_at":"2026-05-18T00:06:00Z","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":"The high velocity gradient observed in the compact cloud CO-0.40-0.22, at a projected distance of 60 pc from the centre of the Milky Way, has led its discoverers to identify the closeby mm continuum emitter, CO-0.40-0.22*, with an intermediate mass black hole (IMBH) candidate. We describe the interaction between CO-0.40-0.22 and the IMBH, by means of a simple analytical model and of hydrodynamical simulations. Through such calculation, we obtain a lower limit to the mass of CO-0.40-0.22* of few $10^4 \\times \\; M_{\\odot}$. This result tends to exclude the formation of such massive black hole in","authors_text":"Alessandro Ballone, Mario Pasquato, Michela Mapelli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-05T18:00:02Z","title":"Weighing the IMBH candidate CO-0.40-0.22* in the Galactic Centre"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.01664","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:c7e1ffb7959d51f5796bae5179b8c7123f2da49754fed7eba0a5b9b5a3d49ac8","target":"record","created_at":"2026-05-18T00:06:00Z","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":"6b414272d6e1b85132f279f465b452a0b759a307ba79f7d8f8ccddb9106478ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-05T18:00:02Z","title_canon_sha256":"f0c04e997ae501e5505ec31d43a60cb632cdee4514e655993217abfe349c248d"},"schema_version":"1.0","source":{"id":"1809.01664","kind":"arxiv","version":1}},"canonical_sha256":"d80e7ae224f6f10e9561d98690e82d5027a4ddb8da072456c03282973d2985c3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d80e7ae224f6f10e9561d98690e82d5027a4ddb8da072456c03282973d2985c3","first_computed_at":"2026-05-18T00:06:00.703190Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:00.703190Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Fq3i8H2A5qcxyTFPQxd6V3hf3jI3vqcYoVOpFxBhyqFVkE9xZ7CdkeujYXFXTBVFG0WvtJrAwcDSK5ZGtVtsCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:00.703579Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.01664","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c7e1ffb7959d51f5796bae5179b8c7123f2da49754fed7eba0a5b9b5a3d49ac8","sha256:ad431094af923db17cbba0e2a57554244e1a759c994ac5e887e3de3676047f32"],"state_sha256":"cbff199774ecd78c7891a7bc459971cccd97cb8af440fa58b55b715460caa67f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rAtEtXQSxJzUH8d8Y60R41HvCAmPN3BlcvpcsbacRIinELGwW14Gd5xeGdB3vW1GkHjEpBsJIsm+nneycOC8BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T07:38:02.953222Z","bundle_sha256":"fc9aba8762cd256cffb8efcb28df9a3ac6eeb48992a1798bdf7acc05bb3b28ca"}}