{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:OKEJJA2DOCUFQVRVFLEYIXDLV7","short_pith_number":"pith:OKEJJA2D","canonical_record":{"source":{"id":"1208.2965","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-14T20:00:07Z","cross_cats_sorted":[],"title_canon_sha256":"a2eab37c5366f2cdf4947f74a3bdd86a61c140e9146edf5e900d53d5871cf291","abstract_canon_sha256":"9ddd0a7f279b22c0476087f159f711600e3a8aec134c2a42dd06dbc32ca7e41a"},"schema_version":"1.0"},"canonical_sha256":"728894834370a85856352ac9845c6baff8acf64f2821b3b0064cf8962a3c9f59","source":{"kind":"arxiv","id":"1208.2965","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.2965","created_at":"2026-05-18T01:55:15Z"},{"alias_kind":"arxiv_version","alias_value":"1208.2965v2","created_at":"2026-05-18T01:55:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.2965","created_at":"2026-05-18T01:55:15Z"},{"alias_kind":"pith_short_12","alias_value":"OKEJJA2DOCUF","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OKEJJA2DOCUFQVRV","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OKEJJA2D","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:OKEJJA2DOCUFQVRVFLEYIXDLV7","target":"record","payload":{"canonical_record":{"source":{"id":"1208.2965","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-14T20:00:07Z","cross_cats_sorted":[],"title_canon_sha256":"a2eab37c5366f2cdf4947f74a3bdd86a61c140e9146edf5e900d53d5871cf291","abstract_canon_sha256":"9ddd0a7f279b22c0476087f159f711600e3a8aec134c2a42dd06dbc32ca7e41a"},"schema_version":"1.0"},"canonical_sha256":"728894834370a85856352ac9845c6baff8acf64f2821b3b0064cf8962a3c9f59","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:55:15.943812Z","signature_b64":"/UKNXVmyEPiWGnVESmAqfi0S6sNWbH4LqgibDAHSwLv+i+e8LsTreji1cO3s1Oppzf+wZe4q26tpyeFy/IJIDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"728894834370a85856352ac9845c6baff8acf64f2821b3b0064cf8962a3c9f59","last_reissued_at":"2026-05-18T01:55:15.943428Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:55:15.943428Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.2965","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":"2026-05-18T01:55:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gh+PODrw1ZuTpcYLnKBSNta/+POgJsZdK3BTA1Jd37rQswrktwQB0xylFjfP4w/7HOp9QIghCe7kIter3+XeAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T00:38:46.189502Z"},"content_sha256":"2db083217af1e2e6ed2de613703c13aed6a0334e0266d6058079360c60d1a234","schema_version":"1.0","event_id":"sha256:2db083217af1e2e6ed2de613703c13aed6a0334e0266d6058079360c60d1a234"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:OKEJJA2DOCUFQVRVFLEYIXDLV7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A theory of photospheric emission from relativistic, collimated outflows","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Asaf Pe'er, Christoffer Lundman, Felix Ryde","submitted_at":"2012-08-14T20:00:07Z","abstract_excerpt":"Relativistic outflows in the form of jets are common in many astrophysical objects. By their very nature, jets have angle dependent velocity profiles, Gamma = Gamma(r, theta, phi), where Gamma is the outflow Lorentz factor. In this work we consider photospheric emission from non-dissipative jets with various Lorentz factor profiles, of the approximate form Gamma \\approx Gamma_0/[(theta/theta_j)^p + 1], were theta_j is the characteristic jet opening angle. In collimated jets, the observed spectrum depends on the viewing angle, theta_v. We show that for narrow jets (theta_j Gamma_0 \\lesssim few)"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.2965","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":"2026-05-18T01:55:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yB8amtnsH9j21aK4q12mUu7KlkUml8cTuR8MEfcU5M7dyGKCmQ98GZ0nd0vXZCznPwIJL+WIDBnhLuT7MqyFDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T00:38:46.190129Z"},"content_sha256":"4ca7395802b1e00c481a4f2cbe3ddb523430f429a93b201ba8d9e6af7105f0d9","schema_version":"1.0","event_id":"sha256:4ca7395802b1e00c481a4f2cbe3ddb523430f429a93b201ba8d9e6af7105f0d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OKEJJA2DOCUFQVRVFLEYIXDLV7/bundle.json","state_url":"https://pith.science/pith/OKEJJA2DOCUFQVRVFLEYIXDLV7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OKEJJA2DOCUFQVRVFLEYIXDLV7/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":"2026-06-11T00:38:46Z","links":{"resolver":"https://pith.science/pith/OKEJJA2DOCUFQVRVFLEYIXDLV7","bundle":"https://pith.science/pith/OKEJJA2DOCUFQVRVFLEYIXDLV7/bundle.json","state":"https://pith.science/pith/OKEJJA2DOCUFQVRVFLEYIXDLV7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OKEJJA2DOCUFQVRVFLEYIXDLV7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:OKEJJA2DOCUFQVRVFLEYIXDLV7","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":"9ddd0a7f279b22c0476087f159f711600e3a8aec134c2a42dd06dbc32ca7e41a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-14T20:00:07Z","title_canon_sha256":"a2eab37c5366f2cdf4947f74a3bdd86a61c140e9146edf5e900d53d5871cf291"},"schema_version":"1.0","source":{"id":"1208.2965","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.2965","created_at":"2026-05-18T01:55:15Z"},{"alias_kind":"arxiv_version","alias_value":"1208.2965v2","created_at":"2026-05-18T01:55:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.2965","created_at":"2026-05-18T01:55:15Z"},{"alias_kind":"pith_short_12","alias_value":"OKEJJA2DOCUF","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OKEJJA2DOCUFQVRV","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OKEJJA2D","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:4ca7395802b1e00c481a4f2cbe3ddb523430f429a93b201ba8d9e6af7105f0d9","target":"graph","created_at":"2026-05-18T01:55:15Z","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":"Relativistic outflows in the form of jets are common in many astrophysical objects. By their very nature, jets have angle dependent velocity profiles, Gamma = Gamma(r, theta, phi), where Gamma is the outflow Lorentz factor. In this work we consider photospheric emission from non-dissipative jets with various Lorentz factor profiles, of the approximate form Gamma \\approx Gamma_0/[(theta/theta_j)^p + 1], were theta_j is the characteristic jet opening angle. In collimated jets, the observed spectrum depends on the viewing angle, theta_v. We show that for narrow jets (theta_j Gamma_0 \\lesssim few)","authors_text":"Asaf Pe'er, Christoffer Lundman, Felix Ryde","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-14T20:00:07Z","title":"A theory of photospheric emission from relativistic, collimated outflows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.2965","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":"sha256:2db083217af1e2e6ed2de613703c13aed6a0334e0266d6058079360c60d1a234","target":"record","created_at":"2026-05-18T01:55:15Z","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":"9ddd0a7f279b22c0476087f159f711600e3a8aec134c2a42dd06dbc32ca7e41a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-14T20:00:07Z","title_canon_sha256":"a2eab37c5366f2cdf4947f74a3bdd86a61c140e9146edf5e900d53d5871cf291"},"schema_version":"1.0","source":{"id":"1208.2965","kind":"arxiv","version":2}},"canonical_sha256":"728894834370a85856352ac9845c6baff8acf64f2821b3b0064cf8962a3c9f59","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"728894834370a85856352ac9845c6baff8acf64f2821b3b0064cf8962a3c9f59","first_computed_at":"2026-05-18T01:55:15.943428Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:55:15.943428Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/UKNXVmyEPiWGnVESmAqfi0S6sNWbH4LqgibDAHSwLv+i+e8LsTreji1cO3s1Oppzf+wZe4q26tpyeFy/IJIDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:55:15.943812Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.2965","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2db083217af1e2e6ed2de613703c13aed6a0334e0266d6058079360c60d1a234","sha256:4ca7395802b1e00c481a4f2cbe3ddb523430f429a93b201ba8d9e6af7105f0d9"],"state_sha256":"055d773f2fb4c78128c6a20c72418b21bf8fd1eaa3255f77cb6bae3acbdd158b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bj+XL9GEUUQXN1cLUiZPSuYml7JEIPnlwoOIinHj0nFBbQvIgc9q7EJgMA2/mI6BuhcsrwSIvLHeHrSP6y5UAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T00:38:46.194273Z","bundle_sha256":"a15e81e6b71bbe55816fd469f071ef8d6c033511ff4a0cf1839f7666733bccf2"}}