{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:5VHSCS2EIZ6BEMCNO3YCBLMOX7","short_pith_number":"pith:5VHSCS2E","canonical_record":{"source":{"id":"1308.3671","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-08-16T17:07:28Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"24c451b268250fff6dbaa6dfd4a997c8f7079b65c52dde19a4f343d9ad675dd5","abstract_canon_sha256":"a5c5a2cb37c48ae14102f8395abec86a13558c063eec3fe9d67ec6119cea2a01"},"schema_version":"1.0"},"canonical_sha256":"ed4f214b44467c12304d76f020ad8ebfc6244637eadef893b2962eb15de3ebd6","source":{"kind":"arxiv","id":"1308.3671","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.3671","created_at":"2026-05-18T03:04:37Z"},{"alias_kind":"arxiv_version","alias_value":"1308.3671v3","created_at":"2026-05-18T03:04:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.3671","created_at":"2026-05-18T03:04:37Z"},{"alias_kind":"pith_short_12","alias_value":"5VHSCS2EIZ6B","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5VHSCS2EIZ6BEMCN","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5VHSCS2E","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:5VHSCS2EIZ6BEMCNO3YCBLMOX7","target":"record","payload":{"canonical_record":{"source":{"id":"1308.3671","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-08-16T17:07:28Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"24c451b268250fff6dbaa6dfd4a997c8f7079b65c52dde19a4f343d9ad675dd5","abstract_canon_sha256":"a5c5a2cb37c48ae14102f8395abec86a13558c063eec3fe9d67ec6119cea2a01"},"schema_version":"1.0"},"canonical_sha256":"ed4f214b44467c12304d76f020ad8ebfc6244637eadef893b2962eb15de3ebd6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:04:37.322994Z","signature_b64":"wmNPHe8jQnzKwFFIHTqwfi8oKClUy9kTByfpPfmLdzwG3wckBfH5+lCX0JLoZLmdGirf8vv587VcYhFpICX8BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ed4f214b44467c12304d76f020ad8ebfc6244637eadef893b2962eb15de3ebd6","last_reissued_at":"2026-05-18T03:04:37.322100Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:04:37.322100Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.3671","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:04:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NFgt+IoqrNE0DGPlm00fAsOnmmMK0D8m1a9eUXGWX4PakUBJL+ML5j1OluAiSsdTTDU7cADTUPa3pbv5eC7OCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T04:28:44.441504Z"},"content_sha256":"2927aa632e7a8d5a975b1410edaba790c9f58ad40cf6cb652ea3518cf74f4674","schema_version":"1.0","event_id":"sha256:2927aa632e7a8d5a975b1410edaba790c9f58ad40cf6cb652ea3518cf74f4674"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:5VHSCS2EIZ6BEMCNO3YCBLMOX7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"THz generation by optical Cherenkov emission from ionizing two-color laser pulses","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.plasm-ph"],"primary_cat":"physics.optics","authors_text":"John P. Palastro, Ki-Yong Kim, Luke A. Johnson, Thomas M. Antonsen","submitted_at":"2013-08-16T17:07:28Z","abstract_excerpt":"Two-color photoionization produces a cycle-averaged current driving broadband, conically emitted THz radiation. We investigate, through simulation, the processes determining the angle of conical emission. We find that the emission angle is determined by an optical Cherenkov effect, where the front velocity of the current source is faster than the THz phase velocity."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.3671","kind":"arxiv","version":3},"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":"2026-05-18T03:04:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hd1t5La/UQmmEyBtNg5bCumIQF3zWJHgg7RcStppMxIqG3C694E5bdv0vbCposGyUg8/ca/uVwVl3O7FYKznBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T04:28:44.441846Z"},"content_sha256":"5167e3aac9bf4ef5480c3ee18701cea4893175f8de81ea1cc0ff36d33be70994","schema_version":"1.0","event_id":"sha256:5167e3aac9bf4ef5480c3ee18701cea4893175f8de81ea1cc0ff36d33be70994"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5VHSCS2EIZ6BEMCNO3YCBLMOX7/bundle.json","state_url":"https://pith.science/pith/5VHSCS2EIZ6BEMCNO3YCBLMOX7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5VHSCS2EIZ6BEMCNO3YCBLMOX7/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":"2026-06-04T04:28:44Z","links":{"resolver":"https://pith.science/pith/5VHSCS2EIZ6BEMCNO3YCBLMOX7","bundle":"https://pith.science/pith/5VHSCS2EIZ6BEMCNO3YCBLMOX7/bundle.json","state":"https://pith.science/pith/5VHSCS2EIZ6BEMCNO3YCBLMOX7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5VHSCS2EIZ6BEMCNO3YCBLMOX7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:5VHSCS2EIZ6BEMCNO3YCBLMOX7","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":"a5c5a2cb37c48ae14102f8395abec86a13558c063eec3fe9d67ec6119cea2a01","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-08-16T17:07:28Z","title_canon_sha256":"24c451b268250fff6dbaa6dfd4a997c8f7079b65c52dde19a4f343d9ad675dd5"},"schema_version":"1.0","source":{"id":"1308.3671","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.3671","created_at":"2026-05-18T03:04:37Z"},{"alias_kind":"arxiv_version","alias_value":"1308.3671v3","created_at":"2026-05-18T03:04:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.3671","created_at":"2026-05-18T03:04:37Z"},{"alias_kind":"pith_short_12","alias_value":"5VHSCS2EIZ6B","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5VHSCS2EIZ6BEMCN","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5VHSCS2E","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:5167e3aac9bf4ef5480c3ee18701cea4893175f8de81ea1cc0ff36d33be70994","target":"graph","created_at":"2026-05-18T03:04:37Z","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":"Two-color photoionization produces a cycle-averaged current driving broadband, conically emitted THz radiation. We investigate, through simulation, the processes determining the angle of conical emission. We find that the emission angle is determined by an optical Cherenkov effect, where the front velocity of the current source is faster than the THz phase velocity.","authors_text":"John P. Palastro, Ki-Yong Kim, Luke A. Johnson, Thomas M. Antonsen","cross_cats":["physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-08-16T17:07:28Z","title":"THz generation by optical Cherenkov emission from ionizing two-color laser pulses"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.3671","kind":"arxiv","version":3},"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":"sha256:2927aa632e7a8d5a975b1410edaba790c9f58ad40cf6cb652ea3518cf74f4674","target":"record","created_at":"2026-05-18T03:04:37Z","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":"a5c5a2cb37c48ae14102f8395abec86a13558c063eec3fe9d67ec6119cea2a01","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-08-16T17:07:28Z","title_canon_sha256":"24c451b268250fff6dbaa6dfd4a997c8f7079b65c52dde19a4f343d9ad675dd5"},"schema_version":"1.0","source":{"id":"1308.3671","kind":"arxiv","version":3}},"canonical_sha256":"ed4f214b44467c12304d76f020ad8ebfc6244637eadef893b2962eb15de3ebd6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed4f214b44467c12304d76f020ad8ebfc6244637eadef893b2962eb15de3ebd6","first_computed_at":"2026-05-18T03:04:37.322100Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:04:37.322100Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wmNPHe8jQnzKwFFIHTqwfi8oKClUy9kTByfpPfmLdzwG3wckBfH5+lCX0JLoZLmdGirf8vv587VcYhFpICX8BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:04:37.322994Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.3671","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2927aa632e7a8d5a975b1410edaba790c9f58ad40cf6cb652ea3518cf74f4674","sha256:5167e3aac9bf4ef5480c3ee18701cea4893175f8de81ea1cc0ff36d33be70994"],"state_sha256":"e077253f5b3898ec0049828051faf6204e760c04a30f715513a24855fd0d3b66"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uYGdphZCDhdDO3YOu9mNkSyfHWvaW5c6kv5POCEp4KfPqIJfOol4yKDrQmrZ+LVGF9BYsHSlQCOMfjiaXoy0Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T04:28:44.445293Z","bundle_sha256":"616ae584923174f35382a22b1f4ae3950ee109bc356c915b1ad637cdea8ad6ae"}}