{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:PDRTY3A4L3YRBJOO6ID54W2S45","short_pith_number":"pith:PDRTY3A4","canonical_record":{"source":{"id":"1901.03649","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-11T16:53:11Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"4315e42fba1194febbf66ede18fb8bbe7730c7270b0f64e4d3b16143e1f2edbd","abstract_canon_sha256":"ccb85f65e82bdfb0ade55e58f85270355c89ebaaee0abe8060486eaf4bde8528"},"schema_version":"1.0"},"canonical_sha256":"78e33c6c1c5ef110a5cef207de5b52e76ec71ad9de73aaab72ce50850be7ffb5","source":{"kind":"arxiv","id":"1901.03649","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.03649","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"arxiv_version","alias_value":"1901.03649v2","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.03649","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"pith_short_12","alias_value":"PDRTY3A4L3YR","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"PDRTY3A4L3YRBJOO","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"PDRTY3A4","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:PDRTY3A4L3YRBJOO6ID54W2S45","target":"record","payload":{"canonical_record":{"source":{"id":"1901.03649","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-11T16:53:11Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"4315e42fba1194febbf66ede18fb8bbe7730c7270b0f64e4d3b16143e1f2edbd","abstract_canon_sha256":"ccb85f65e82bdfb0ade55e58f85270355c89ebaaee0abe8060486eaf4bde8528"},"schema_version":"1.0"},"canonical_sha256":"78e33c6c1c5ef110a5cef207de5b52e76ec71ad9de73aaab72ce50850be7ffb5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:57.806642Z","signature_b64":"tQ0wCa1NcJWB9yZ/EhG400U5FglcaL9VLPmtOunFtW9Ka3m2525kivpnulHe6zJfBWJjYAvDYEnUBO4eDNy5BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"78e33c6c1c5ef110a5cef207de5b52e76ec71ad9de73aaab72ce50850be7ffb5","last_reissued_at":"2026-05-17T23:44:57.805826Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:57.805826Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.03649","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:44:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"je3aNn0dAFg1rFBpCtZ3uJqQYbI7KcqHaxq8BFWiVRcE8RK0A6skrzDDcgjKJlHYBW8rY/Ac1Z+HhxtEPzdZDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:10:06.503722Z"},"content_sha256":"259d5c846e9526429cc1e42334092d253ebe776075778cd19c7e9bd3e874973a","schema_version":"1.0","event_id":"sha256:259d5c846e9526429cc1e42334092d253ebe776075778cd19c7e9bd3e874973a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:PDRTY3A4L3YRBJOO6ID54W2S45","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bondi-Hoyle-Lyttleton Accretion onto Star Clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Andrea Antoni, Enrico Ramirez-Ruiz, Nicholas Kaaz","submitted_at":"2019-01-11T16:53:11Z","abstract_excerpt":"An isolated star moving supersonically through a uniform gas accretes material from its gravitationally-induced wake. The rate of accretion is set by the accretion radius of the star and is well-described by classical Bondi-Hoyle-Lyttleton theory. Stars, however, are not born in isolation. They form in clusters where they accrete material that is influenced by all the stars in the cluster. We perform three-dimensional hydrodynamic simulations of clusters of individual accretors embedded in a uniform-density wind in order to study how the accretion rates experienced by individual cluster member"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.03649","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":""},"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":"2026-05-17T23:44:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"exvUAv8ex0QSg4vF2aJ1WLTbnj30ZTTbr9h7LEXf5XD/XCbhpuOiUq7JI/2lHIXe87mfO7gF2ieI2bi8ZB0zDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:10:06.504415Z"},"content_sha256":"6053e226fa153da14032056b9ee1031fd84cc93e6a690cf2dc3e3e4627fa101b","schema_version":"1.0","event_id":"sha256:6053e226fa153da14032056b9ee1031fd84cc93e6a690cf2dc3e3e4627fa101b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PDRTY3A4L3YRBJOO6ID54W2S45/bundle.json","state_url":"https://pith.science/pith/PDRTY3A4L3YRBJOO6ID54W2S45/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PDRTY3A4L3YRBJOO6ID54W2S45/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":"2026-05-25T11:10:06Z","links":{"resolver":"https://pith.science/pith/PDRTY3A4L3YRBJOO6ID54W2S45","bundle":"https://pith.science/pith/PDRTY3A4L3YRBJOO6ID54W2S45/bundle.json","state":"https://pith.science/pith/PDRTY3A4L3YRBJOO6ID54W2S45/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PDRTY3A4L3YRBJOO6ID54W2S45/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:PDRTY3A4L3YRBJOO6ID54W2S45","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":"ccb85f65e82bdfb0ade55e58f85270355c89ebaaee0abe8060486eaf4bde8528","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-11T16:53:11Z","title_canon_sha256":"4315e42fba1194febbf66ede18fb8bbe7730c7270b0f64e4d3b16143e1f2edbd"},"schema_version":"1.0","source":{"id":"1901.03649","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.03649","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"arxiv_version","alias_value":"1901.03649v2","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.03649","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"pith_short_12","alias_value":"PDRTY3A4L3YR","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"PDRTY3A4L3YRBJOO","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"PDRTY3A4","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:6053e226fa153da14032056b9ee1031fd84cc93e6a690cf2dc3e3e4627fa101b","target":"graph","created_at":"2026-05-17T23:44:57Z","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":"An isolated star moving supersonically through a uniform gas accretes material from its gravitationally-induced wake. The rate of accretion is set by the accretion radius of the star and is well-described by classical Bondi-Hoyle-Lyttleton theory. Stars, however, are not born in isolation. They form in clusters where they accrete material that is influenced by all the stars in the cluster. We perform three-dimensional hydrodynamic simulations of clusters of individual accretors embedded in a uniform-density wind in order to study how the accretion rates experienced by individual cluster member","authors_text":"Andrea Antoni, Enrico Ramirez-Ruiz, Nicholas Kaaz","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-11T16:53:11Z","title":"Bondi-Hoyle-Lyttleton Accretion onto Star Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.03649","kind":"arxiv","version":2},"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":"sha256:259d5c846e9526429cc1e42334092d253ebe776075778cd19c7e9bd3e874973a","target":"record","created_at":"2026-05-17T23:44:57Z","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":"ccb85f65e82bdfb0ade55e58f85270355c89ebaaee0abe8060486eaf4bde8528","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-11T16:53:11Z","title_canon_sha256":"4315e42fba1194febbf66ede18fb8bbe7730c7270b0f64e4d3b16143e1f2edbd"},"schema_version":"1.0","source":{"id":"1901.03649","kind":"arxiv","version":2}},"canonical_sha256":"78e33c6c1c5ef110a5cef207de5b52e76ec71ad9de73aaab72ce50850be7ffb5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"78e33c6c1c5ef110a5cef207de5b52e76ec71ad9de73aaab72ce50850be7ffb5","first_computed_at":"2026-05-17T23:44:57.805826Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:57.805826Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tQ0wCa1NcJWB9yZ/EhG400U5FglcaL9VLPmtOunFtW9Ka3m2525kivpnulHe6zJfBWJjYAvDYEnUBO4eDNy5BQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:57.806642Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.03649","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:259d5c846e9526429cc1e42334092d253ebe776075778cd19c7e9bd3e874973a","sha256:6053e226fa153da14032056b9ee1031fd84cc93e6a690cf2dc3e3e4627fa101b"],"state_sha256":"ab0472eda010989e75515815f77a1d5e5005d64c03315b6010f7ba7cb764580b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VF824X9x9c2rUezw//Kk8Ik6Ye82oqaGMmRygbw849XzgeBL6Wmwl/pT7ZvjBa3SNMsEbbs/j7XaZu1gFge+Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T11:10:06.508033Z","bundle_sha256":"329191d6511775f10fce2704e064703285af140117004e48a4dc8f8022c48948"}}