{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:VURDPXJAJZAZIGAY4ZR24EEXYR","short_pith_number":"pith:VURDPXJA","canonical_record":{"source":{"id":"1304.4168","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-15T17:03:51Z","cross_cats_sorted":[],"title_canon_sha256":"057fcd9442177b62b839e2a4c6c241ab2783eda710f7c3e73c992ec02f7ff87c","abstract_canon_sha256":"99bbfa62f0085ac7a3d34cf669288734cc07b91104cb7a7f02d7e56d6f680b54"},"schema_version":"1.0"},"canonical_sha256":"ad2237dd204e41941818e663ae1097c47e1b7766e8ed55f01952886bca84f61e","source":{"kind":"arxiv","id":"1304.4168","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.4168","created_at":"2026-05-18T01:50:32Z"},{"alias_kind":"arxiv_version","alias_value":"1304.4168v2","created_at":"2026-05-18T01:50:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.4168","created_at":"2026-05-18T01:50:32Z"},{"alias_kind":"pith_short_12","alias_value":"VURDPXJAJZAZ","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VURDPXJAJZAZIGAY","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VURDPXJA","created_at":"2026-05-18T12:28:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:VURDPXJAJZAZIGAY4ZR24EEXYR","target":"record","payload":{"canonical_record":{"source":{"id":"1304.4168","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-15T17:03:51Z","cross_cats_sorted":[],"title_canon_sha256":"057fcd9442177b62b839e2a4c6c241ab2783eda710f7c3e73c992ec02f7ff87c","abstract_canon_sha256":"99bbfa62f0085ac7a3d34cf669288734cc07b91104cb7a7f02d7e56d6f680b54"},"schema_version":"1.0"},"canonical_sha256":"ad2237dd204e41941818e663ae1097c47e1b7766e8ed55f01952886bca84f61e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:32.642417Z","signature_b64":"ZpuB9nDALS4hqbTWVf+aqII+RQbM2FSkCmQ0QJrXTLb2ruiU/kzLXbxDfgQ0C+LBKqQEI0ps4ejYH3/cC3mXAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad2237dd204e41941818e663ae1097c47e1b7766e8ed55f01952886bca84f61e","last_reissued_at":"2026-05-18T01:50:32.641747Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:32.641747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.4168","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":"2026-05-18T01:50:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HFaJfT8tvM1FWI0TMBKvlw3sqXjgNDpTMU2seViEn5K+libiPRIR7Og5cOtlZMOWmkW8eldTbZBL3n231QPpCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:08:02.331867Z"},"content_sha256":"4b32dcdc1fc87c89a47f96a822742ba44c47e80f67c8c735d4eb997dbc7887e0","schema_version":"1.0","event_id":"sha256:4b32dcdc1fc87c89a47f96a822742ba44c47e80f67c8c735d4eb997dbc7887e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:VURDPXJAJZAZIGAY4ZR24EEXYR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing Curvature Effects in the Fermi GRB 110920","license":"http://creativecommons.org/licenses/publicdomain/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Shenoy, C. Dermer, E. Sonbas, G. A. MacLachlan, J. Hakkila, K. S. Dhuga, L. C. Maximon, P. N. Bhat, T. N. Ukwatta, W. C. Parke","submitted_at":"2013-04-15T17:03:51Z","abstract_excerpt":"Curvature effects in Gamma-ray bursts (GRBs) have long been a source of considerable interest. In a collimated relativistic GRB jet, photons that are off-axis relative to the observer arrive at later times than on-axis photons and are also expected to be spectrally softer. In this work, we invoke a relatively simple kinematic two-shell collision model for a uniform jet profile and compare its predictions to GRB prompt-emission data for observations that have been attributed to curvature effects such as the peak-flux--peak-frequency relation, i.e., the relation between the $\\nu$F$_\\nu$ flux and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.4168","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":"2026-05-18T01:50:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Edaoqdvi7w3PoJLc3+B3SpZkt4+0i4qx6PNgt37Hwya14rlDqQmq0toQryOvhZk3zKs1mamxndveX60v3AtVBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:08:02.332539Z"},"content_sha256":"762d43d132440c2a17928960c308252f7b5e9b5329914be2a5bdabe2b8df20ab","schema_version":"1.0","event_id":"sha256:762d43d132440c2a17928960c308252f7b5e9b5329914be2a5bdabe2b8df20ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VURDPXJAJZAZIGAY4ZR24EEXYR/bundle.json","state_url":"https://pith.science/pith/VURDPXJAJZAZIGAY4ZR24EEXYR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VURDPXJAJZAZIGAY4ZR24EEXYR/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":"2026-05-31T21:08:02Z","links":{"resolver":"https://pith.science/pith/VURDPXJAJZAZIGAY4ZR24EEXYR","bundle":"https://pith.science/pith/VURDPXJAJZAZIGAY4ZR24EEXYR/bundle.json","state":"https://pith.science/pith/VURDPXJAJZAZIGAY4ZR24EEXYR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VURDPXJAJZAZIGAY4ZR24EEXYR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:VURDPXJAJZAZIGAY4ZR24EEXYR","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":"99bbfa62f0085ac7a3d34cf669288734cc07b91104cb7a7f02d7e56d6f680b54","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-15T17:03:51Z","title_canon_sha256":"057fcd9442177b62b839e2a4c6c241ab2783eda710f7c3e73c992ec02f7ff87c"},"schema_version":"1.0","source":{"id":"1304.4168","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.4168","created_at":"2026-05-18T01:50:32Z"},{"alias_kind":"arxiv_version","alias_value":"1304.4168v2","created_at":"2026-05-18T01:50:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.4168","created_at":"2026-05-18T01:50:32Z"},{"alias_kind":"pith_short_12","alias_value":"VURDPXJAJZAZ","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VURDPXJAJZAZIGAY","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VURDPXJA","created_at":"2026-05-18T12:28:04Z"}],"graph_snapshots":[{"event_id":"sha256:762d43d132440c2a17928960c308252f7b5e9b5329914be2a5bdabe2b8df20ab","target":"graph","created_at":"2026-05-18T01:50:32Z","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":"Curvature effects in Gamma-ray bursts (GRBs) have long been a source of considerable interest. In a collimated relativistic GRB jet, photons that are off-axis relative to the observer arrive at later times than on-axis photons and are also expected to be spectrally softer. In this work, we invoke a relatively simple kinematic two-shell collision model for a uniform jet profile and compare its predictions to GRB prompt-emission data for observations that have been attributed to curvature effects such as the peak-flux--peak-frequency relation, i.e., the relation between the $\\nu$F$_\\nu$ flux and","authors_text":"A. Shenoy, C. Dermer, E. Sonbas, G. A. MacLachlan, J. Hakkila, K. S. Dhuga, L. C. Maximon, P. N. Bhat, T. N. Ukwatta, W. C. Parke","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-15T17:03:51Z","title":"Probing Curvature Effects in the Fermi GRB 110920"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.4168","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":"sha256:4b32dcdc1fc87c89a47f96a822742ba44c47e80f67c8c735d4eb997dbc7887e0","target":"record","created_at":"2026-05-18T01:50:32Z","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":"99bbfa62f0085ac7a3d34cf669288734cc07b91104cb7a7f02d7e56d6f680b54","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-15T17:03:51Z","title_canon_sha256":"057fcd9442177b62b839e2a4c6c241ab2783eda710f7c3e73c992ec02f7ff87c"},"schema_version":"1.0","source":{"id":"1304.4168","kind":"arxiv","version":2}},"canonical_sha256":"ad2237dd204e41941818e663ae1097c47e1b7766e8ed55f01952886bca84f61e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ad2237dd204e41941818e663ae1097c47e1b7766e8ed55f01952886bca84f61e","first_computed_at":"2026-05-18T01:50:32.641747Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:32.641747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZpuB9nDALS4hqbTWVf+aqII+RQbM2FSkCmQ0QJrXTLb2ruiU/kzLXbxDfgQ0C+LBKqQEI0ps4ejYH3/cC3mXAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:32.642417Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.4168","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b32dcdc1fc87c89a47f96a822742ba44c47e80f67c8c735d4eb997dbc7887e0","sha256:762d43d132440c2a17928960c308252f7b5e9b5329914be2a5bdabe2b8df20ab"],"state_sha256":"8f4a0578c4b987ef927203e2af09d6e1c77a11d99a9049ac7be0d703dc1f747d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F7KDiyQIaqp5SktD5Sc8wJTUmdYHlk1HL5qa7rDguMNcOHwB+UVjPcOIdKF7L8y/LBI/x1tOmu2a4jg/80vIAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T21:08:02.336756Z","bundle_sha256":"a530047946181aa5a8ac3b2f2b951b19a267f743e61ca866affe925941cb82c3"}}