{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:OEDPDDX2672V7HD54PIZ72FNOD","short_pith_number":"pith:OEDPDDX2","canonical_record":{"source":{"id":"1809.11163","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-28T17:51:58Z","cross_cats_sorted":[],"title_canon_sha256":"a6eea4cdc4b770d59aa7c022ed6603ca60b3ab6ec67876741de3f2482030f13f","abstract_canon_sha256":"e14906294c43bffe0becb31867e1f72a83e3d07e469f421e83fb917c1e7def23"},"schema_version":"1.0"},"canonical_sha256":"7106f18efaf7f55f9c7de3d19fe8ad70d59dbe36f51abeb0b7756fd06f936d06","source":{"kind":"arxiv","id":"1809.11163","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.11163","created_at":"2026-05-17T23:57:31Z"},{"alias_kind":"arxiv_version","alias_value":"1809.11163v2","created_at":"2026-05-17T23:57:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.11163","created_at":"2026-05-17T23:57:31Z"},{"alias_kind":"pith_short_12","alias_value":"OEDPDDX2672V","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OEDPDDX2672V7HD5","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OEDPDDX2","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:OEDPDDX2672V7HD54PIZ72FNOD","target":"record","payload":{"canonical_record":{"source":{"id":"1809.11163","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-28T17:51:58Z","cross_cats_sorted":[],"title_canon_sha256":"a6eea4cdc4b770d59aa7c022ed6603ca60b3ab6ec67876741de3f2482030f13f","abstract_canon_sha256":"e14906294c43bffe0becb31867e1f72a83e3d07e469f421e83fb917c1e7def23"},"schema_version":"1.0"},"canonical_sha256":"7106f18efaf7f55f9c7de3d19fe8ad70d59dbe36f51abeb0b7756fd06f936d06","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:57:31.170963Z","signature_b64":"ojboa15w+843Uao/YCu4pqImAYN7BOaI4scoRr4Ay9qrbDJFNjRczbM0AnjfpTLyplxgPWF5T74zl4s1QpElDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7106f18efaf7f55f9c7de3d19fe8ad70d59dbe36f51abeb0b7756fd06f936d06","last_reissued_at":"2026-05-17T23:57:31.170451Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:57:31.170451Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.11163","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":"2026-05-17T23:57:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"leQ3Ip0MPftDEnHq0N3QF4qEqVlD43Zxrmci3EyqOWKi1MpcyP/MCmJmsuIJhV9E7+21fYARe8ucwSSxq64GDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T00:52:59.119332Z"},"content_sha256":"c33a80ab2928cf494ad3f6fdff4fe0de982f27de8194f2631c76a0e826bdfab9","schema_version":"1.0","event_id":"sha256:c33a80ab2928cf494ad3f6fdff4fe0de982f27de8194f2631c76a0e826bdfab9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:OEDPDDX2672V7HD54PIZ72FNOD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Viscous-Dynamical Ejecta from Binary Neutron Star Merger","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Albino Perego, David Radice, Kenta Hotokezaka, Luke F. Roberts, Sebastiano Bernuzzi, Steven A. Fromm","submitted_at":"2018-09-28T17:51:58Z","abstract_excerpt":"General-relativistic simulations of binary neutron star mergers with viscosity reveal a new outflow mechanism operating in unequal mass binaries on dynamical timescales and enabled by turbulent viscosity. These \"viscous-dynamical\" ejecta are launched during merger due to the thermalization of mass exchange streams between the secondary and the primary neutron star. They are characterized by asymptotic velocities extending up to ${\\sim} 0.8\\, c$, and have masses that depend on the efficiency of the viscous mechanism. Depending on the unknown strength of the effective viscosity arising from magn"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.11163","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":"2026-05-17T23:57:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9Tajmtwgwfk8KoiB5wZJtwM8J0hSiuFI6zyDlIhj2FCotqbS0zv7aFTrAsidWnENLo7bNSl8JByLXlahORi8BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T00:52:59.119801Z"},"content_sha256":"a3484564d9dfe8df36de60c4d5433ff08ee369ba148b4e3c09ff47ccfcdfca04","schema_version":"1.0","event_id":"sha256:a3484564d9dfe8df36de60c4d5433ff08ee369ba148b4e3c09ff47ccfcdfca04"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OEDPDDX2672V7HD54PIZ72FNOD/bundle.json","state_url":"https://pith.science/pith/OEDPDDX2672V7HD54PIZ72FNOD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OEDPDDX2672V7HD54PIZ72FNOD/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":"2026-05-25T00:52:59Z","links":{"resolver":"https://pith.science/pith/OEDPDDX2672V7HD54PIZ72FNOD","bundle":"https://pith.science/pith/OEDPDDX2672V7HD54PIZ72FNOD/bundle.json","state":"https://pith.science/pith/OEDPDDX2672V7HD54PIZ72FNOD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OEDPDDX2672V7HD54PIZ72FNOD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:OEDPDDX2672V7HD54PIZ72FNOD","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":"e14906294c43bffe0becb31867e1f72a83e3d07e469f421e83fb917c1e7def23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-28T17:51:58Z","title_canon_sha256":"a6eea4cdc4b770d59aa7c022ed6603ca60b3ab6ec67876741de3f2482030f13f"},"schema_version":"1.0","source":{"id":"1809.11163","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.11163","created_at":"2026-05-17T23:57:31Z"},{"alias_kind":"arxiv_version","alias_value":"1809.11163v2","created_at":"2026-05-17T23:57:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.11163","created_at":"2026-05-17T23:57:31Z"},{"alias_kind":"pith_short_12","alias_value":"OEDPDDX2672V","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OEDPDDX2672V7HD5","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OEDPDDX2","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:a3484564d9dfe8df36de60c4d5433ff08ee369ba148b4e3c09ff47ccfcdfca04","target":"graph","created_at":"2026-05-17T23:57:31Z","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":"General-relativistic simulations of binary neutron star mergers with viscosity reveal a new outflow mechanism operating in unequal mass binaries on dynamical timescales and enabled by turbulent viscosity. These \"viscous-dynamical\" ejecta are launched during merger due to the thermalization of mass exchange streams between the secondary and the primary neutron star. They are characterized by asymptotic velocities extending up to ${\\sim} 0.8\\, c$, and have masses that depend on the efficiency of the viscous mechanism. Depending on the unknown strength of the effective viscosity arising from magn","authors_text":"Albino Perego, David Radice, Kenta Hotokezaka, Luke F. Roberts, Sebastiano Bernuzzi, Steven A. Fromm","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-28T17:51:58Z","title":"Viscous-Dynamical Ejecta from Binary Neutron Star Merger"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.11163","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:c33a80ab2928cf494ad3f6fdff4fe0de982f27de8194f2631c76a0e826bdfab9","target":"record","created_at":"2026-05-17T23:57:31Z","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":"e14906294c43bffe0becb31867e1f72a83e3d07e469f421e83fb917c1e7def23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-28T17:51:58Z","title_canon_sha256":"a6eea4cdc4b770d59aa7c022ed6603ca60b3ab6ec67876741de3f2482030f13f"},"schema_version":"1.0","source":{"id":"1809.11163","kind":"arxiv","version":2}},"canonical_sha256":"7106f18efaf7f55f9c7de3d19fe8ad70d59dbe36f51abeb0b7756fd06f936d06","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7106f18efaf7f55f9c7de3d19fe8ad70d59dbe36f51abeb0b7756fd06f936d06","first_computed_at":"2026-05-17T23:57:31.170451Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:57:31.170451Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ojboa15w+843Uao/YCu4pqImAYN7BOaI4scoRr4Ay9qrbDJFNjRczbM0AnjfpTLyplxgPWF5T74zl4s1QpElDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:57:31.170963Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.11163","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c33a80ab2928cf494ad3f6fdff4fe0de982f27de8194f2631c76a0e826bdfab9","sha256:a3484564d9dfe8df36de60c4d5433ff08ee369ba148b4e3c09ff47ccfcdfca04"],"state_sha256":"d3a4fc599b0ac7607095beaba6d364e54cb83fe2e4ae272c5c53ee025bd9998f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DIFedbw5lNXcJaHO3wAeQ0ToAUOSuJTg4o9z1h+vZIpO27tJAJ3cfLs51UeIbaZd1FEBDm0PgJFz3FzMqCOXCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T00:52:59.123253Z","bundle_sha256":"ecaba468908692e090cbf97b24445499905d051807f42f7b401a22c40561d883"}}