{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:3IW3BFOHM2KYGQ3QY5JHK6H3PF","short_pith_number":"pith:3IW3BFOH","canonical_record":{"source":{"id":"2203.03045","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-03-06T20:36:31Z","cross_cats_sorted":[],"title_canon_sha256":"ca51eed7a16e5def71ab4ea91caf71db4929ebd5f9a1145126ef6aaa9d712f30","abstract_canon_sha256":"03e3cbc25b31da10bf406111ed8c263c49b16bc9c2d053aacdb10983179fec52"},"schema_version":"1.0"},"canonical_sha256":"da2db095c76695834370c7527578fb795aaeb180cba9aa36f948b05503c67b80","source":{"kind":"arxiv","id":"2203.03045","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.03045","created_at":"2026-07-05T04:59:20Z"},{"alias_kind":"arxiv_version","alias_value":"2203.03045v2","created_at":"2026-07-05T04:59:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.03045","created_at":"2026-07-05T04:59:20Z"},{"alias_kind":"pith_short_12","alias_value":"3IW3BFOHM2KY","created_at":"2026-07-05T04:59:20Z"},{"alias_kind":"pith_short_16","alias_value":"3IW3BFOHM2KYGQ3Q","created_at":"2026-07-05T04:59:20Z"},{"alias_kind":"pith_short_8","alias_value":"3IW3BFOH","created_at":"2026-07-05T04:59:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:3IW3BFOHM2KYGQ3QY5JHK6H3PF","target":"record","payload":{"canonical_record":{"source":{"id":"2203.03045","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-03-06T20:36:31Z","cross_cats_sorted":[],"title_canon_sha256":"ca51eed7a16e5def71ab4ea91caf71db4929ebd5f9a1145126ef6aaa9d712f30","abstract_canon_sha256":"03e3cbc25b31da10bf406111ed8c263c49b16bc9c2d053aacdb10983179fec52"},"schema_version":"1.0"},"canonical_sha256":"da2db095c76695834370c7527578fb795aaeb180cba9aa36f948b05503c67b80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:59:20.230308Z","signature_b64":"Tjv+f0JR6a76F7P2lGbvOwgvct06gZUMqOKOCLBQYJABKmti3PNlsfm7HVa5SoZZO+Qw53Y+D+cEja9PGLeYBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"da2db095c76695834370c7527578fb795aaeb180cba9aa36f948b05503c67b80","last_reissued_at":"2026-07-05T04:59:20.229930Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:59:20.229930Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2203.03045","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":"2026-07-05T04:59:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vQQah/mtZUt01+n3/6jh5g7Go1y0WEqFujq7FHrZATvcrAGsNUZwcRKpuX/Jg3naG6gKQdgklbKCJCfvpdhyBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T14:53:33.670534Z"},"content_sha256":"4ecf94e6cdf632a420382b287e48ff94b52059a9535e1f51fc75f1a02ea46cb8","schema_version":"1.0","event_id":"sha256:4ecf94e6cdf632a420382b287e48ff94b52059a9535e1f51fc75f1a02ea46cb8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:3IW3BFOHM2KYGQ3QY5JHK6H3PF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Engine-fed Kilonovae (Mergernovae) -- I. Dynamical Evolution and Energy Injection / Heating Efficiencies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Bing Zhang, Shunke Ai, Zhaohuan Zhu","submitted_at":"2022-03-06T20:36:31Z","abstract_excerpt":"A binary neutron star merger is expected to be associated by a kilonova, transient optical emission powered by radioactive decay of the neutron-rich ejecta. If the post-merger remnant is a long-lived neutron star, additional energy injection to the ejecta is possible. In this first paper of a series, we study the dynamical evolution of the engine-fed kilonova (mergernova) ejecta in detail. We perform a semi-analytical study of the problem by adopting a modified mechanical blastwave model that invokes interaction between a Poynting-flux-dominated flow and a non-magnetized massive ejecta. Shortl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.03045","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2203.03045/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":"2026-07-05T04:59:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vFhKnRuwBva5hDCywa6eA+idmSwZinqdcgGdNg8TthJMQgoMWr2F23VluV0k01GGBf0Uwraw08olpPZ/454uDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T14:53:33.671489Z"},"content_sha256":"1158a6abd6e5a349b536825ce8ff326be4abb918a95ddc33b93f6872e8876104","schema_version":"1.0","event_id":"sha256:1158a6abd6e5a349b536825ce8ff326be4abb918a95ddc33b93f6872e8876104"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3IW3BFOHM2KYGQ3QY5JHK6H3PF/bundle.json","state_url":"https://pith.science/pith/3IW3BFOHM2KYGQ3QY5JHK6H3PF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3IW3BFOHM2KYGQ3QY5JHK6H3PF/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":"2026-08-19T14:53:33Z","links":{"resolver":"https://pith.science/pith/3IW3BFOHM2KYGQ3QY5JHK6H3PF","bundle":"https://pith.science/pith/3IW3BFOHM2KYGQ3QY5JHK6H3PF/bundle.json","state":"https://pith.science/pith/3IW3BFOHM2KYGQ3QY5JHK6H3PF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3IW3BFOHM2KYGQ3QY5JHK6H3PF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:3IW3BFOHM2KYGQ3QY5JHK6H3PF","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":"03e3cbc25b31da10bf406111ed8c263c49b16bc9c2d053aacdb10983179fec52","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-03-06T20:36:31Z","title_canon_sha256":"ca51eed7a16e5def71ab4ea91caf71db4929ebd5f9a1145126ef6aaa9d712f30"},"schema_version":"1.0","source":{"id":"2203.03045","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.03045","created_at":"2026-07-05T04:59:20Z"},{"alias_kind":"arxiv_version","alias_value":"2203.03045v2","created_at":"2026-07-05T04:59:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.03045","created_at":"2026-07-05T04:59:20Z"},{"alias_kind":"pith_short_12","alias_value":"3IW3BFOHM2KY","created_at":"2026-07-05T04:59:20Z"},{"alias_kind":"pith_short_16","alias_value":"3IW3BFOHM2KYGQ3Q","created_at":"2026-07-05T04:59:20Z"},{"alias_kind":"pith_short_8","alias_value":"3IW3BFOH","created_at":"2026-07-05T04:59:20Z"}],"graph_snapshots":[{"event_id":"sha256:1158a6abd6e5a349b536825ce8ff326be4abb918a95ddc33b93f6872e8876104","target":"graph","created_at":"2026-07-05T04:59:20Z","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/2203.03045/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A binary neutron star merger is expected to be associated by a kilonova, transient optical emission powered by radioactive decay of the neutron-rich ejecta. If the post-merger remnant is a long-lived neutron star, additional energy injection to the ejecta is possible. In this first paper of a series, we study the dynamical evolution of the engine-fed kilonova (mergernova) ejecta in detail. We perform a semi-analytical study of the problem by adopting a modified mechanical blastwave model that invokes interaction between a Poynting-flux-dominated flow and a non-magnetized massive ejecta. Shortl","authors_text":"Bing Zhang, Shunke Ai, Zhaohuan Zhu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-03-06T20:36:31Z","title":"Engine-fed Kilonovae (Mergernovae) -- I. Dynamical Evolution and Energy Injection / Heating Efficiencies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.03045","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":"sha256:4ecf94e6cdf632a420382b287e48ff94b52059a9535e1f51fc75f1a02ea46cb8","target":"record","created_at":"2026-07-05T04:59:20Z","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":"03e3cbc25b31da10bf406111ed8c263c49b16bc9c2d053aacdb10983179fec52","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-03-06T20:36:31Z","title_canon_sha256":"ca51eed7a16e5def71ab4ea91caf71db4929ebd5f9a1145126ef6aaa9d712f30"},"schema_version":"1.0","source":{"id":"2203.03045","kind":"arxiv","version":2}},"canonical_sha256":"da2db095c76695834370c7527578fb795aaeb180cba9aa36f948b05503c67b80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"da2db095c76695834370c7527578fb795aaeb180cba9aa36f948b05503c67b80","first_computed_at":"2026-07-05T04:59:20.229930Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:59:20.229930Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Tjv+f0JR6a76F7P2lGbvOwgvct06gZUMqOKOCLBQYJABKmti3PNlsfm7HVa5SoZZO+Qw53Y+D+cEja9PGLeYBw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:59:20.230308Z","signed_message":"canonical_sha256_bytes"},"source_id":"2203.03045","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4ecf94e6cdf632a420382b287e48ff94b52059a9535e1f51fc75f1a02ea46cb8","sha256:1158a6abd6e5a349b536825ce8ff326be4abb918a95ddc33b93f6872e8876104"],"state_sha256":"600dc165a23cb5a4fc7970a5a9e504c507da5d4a70377903a892301ef0b00e27"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IWlrqOOApbR2PTWdb/BdI8/q2dMF2/LKyoApDCWZkJFhA/94MooGuyogAGjv5stNylgb06uTyMH7AI2EmiaPBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T14:53:33.677472Z","bundle_sha256":"f2ea446ad2ddbeee063b1d48f30cc4c7bbed2f1d2b7158a2be082a706271bb10"}}