{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:TZ6HWYOBUER3JOXXXFUDDWE53Q","short_pith_number":"pith:TZ6HWYOB","canonical_record":{"source":{"id":"1310.3997","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-15T10:40:11Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"a03ba60de910dd351c08619af28fd3c4a69c14ebd65af5e21d9feb20fb01c7b4","abstract_canon_sha256":"20e6bb7b095aceb711b3eeebbaf4a0e79670a394291086380714d9c6b96bd091"},"schema_version":"1.0"},"canonical_sha256":"9e7c7b61c1a123b4baf7b96831d89ddc026bba7bc88121fc013627d50f8f2cab","source":{"kind":"arxiv","id":"1310.3997","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.3997","created_at":"2026-05-18T01:47:05Z"},{"alias_kind":"arxiv_version","alias_value":"1310.3997v1","created_at":"2026-05-18T01:47:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.3997","created_at":"2026-05-18T01:47:05Z"},{"alias_kind":"pith_short_12","alias_value":"TZ6HWYOBUER3","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TZ6HWYOBUER3JOXX","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TZ6HWYOB","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:TZ6HWYOBUER3JOXXXFUDDWE53Q","target":"record","payload":{"canonical_record":{"source":{"id":"1310.3997","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-15T10:40:11Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"a03ba60de910dd351c08619af28fd3c4a69c14ebd65af5e21d9feb20fb01c7b4","abstract_canon_sha256":"20e6bb7b095aceb711b3eeebbaf4a0e79670a394291086380714d9c6b96bd091"},"schema_version":"1.0"},"canonical_sha256":"9e7c7b61c1a123b4baf7b96831d89ddc026bba7bc88121fc013627d50f8f2cab","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:05.257931Z","signature_b64":"F/MRFuGBb2nwJqgIlfdoHy7BkYBALGZJ38UMQvFlqvH1qpz+Xs+K9d/9xMZim9HOZnYGQcaugrjOafRxzHbsCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e7c7b61c1a123b4baf7b96831d89ddc026bba7bc88121fc013627d50f8f2cab","last_reissued_at":"2026-05-18T01:47:05.257345Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:05.257345Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.3997","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:47:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rqj1Q+tUsQcrqPfnR2Ne5WCpkUBBBX9FHcY5DNvVtyzFfUuJ5H4nVqm74LuXkEYAl38JnH2t+6d+Fi2ToYIpBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T06:54:07.462792Z"},"content_sha256":"1b2b2cdcf05215f13ac9229198c18919713d91f4255b7e31ced9588dbdb75d1c","schema_version":"1.0","event_id":"sha256:1b2b2cdcf05215f13ac9229198c18919713d91f4255b7e31ced9588dbdb75d1c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:TZ6HWYOBUER3JOXXXFUDDWE53Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Non-thermal radio emission from O-type stars. V. 9 Sgr","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"D. Volpi, R. Blomme","submitted_at":"2013-10-15T10:40:11Z","abstract_excerpt":"The colliding winds in a massive binary system generate synchrotron emission due to a fraction of electrons that have been accelerated to relativistic speeds around the shocks in the colliding-wind region. We studied the radio light curve of 9 Sgr = HD 164794, a massive O-type binary with a 9.1-yr period. We investigated whether the radio emission varies consistently with orbital phase and we determined some parameters of the colliding-wind region. We reduced a large set of archive data from the Very Large Array (VLA) to determine the radio light curve of 9 Sgr at 2, 3.6, 6 and 20 cm. We also "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.3997","kind":"arxiv","version":1},"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":"2026-05-18T01:47:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MS1y/5Woq0MdJFUA2w1Dc0MGzUz6LZHWZLR5gIXtlM0C68A+AVQLlsOpLRe6D14JuswxWSZ2gbXB7+WdKy69Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T06:54:07.463133Z"},"content_sha256":"5657ad63c4bbf4739054ca83a9aa0ed335e8369adca33bd9c54ae286e176c6dc","schema_version":"1.0","event_id":"sha256:5657ad63c4bbf4739054ca83a9aa0ed335e8369adca33bd9c54ae286e176c6dc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TZ6HWYOBUER3JOXXXFUDDWE53Q/bundle.json","state_url":"https://pith.science/pith/TZ6HWYOBUER3JOXXXFUDDWE53Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TZ6HWYOBUER3JOXXXFUDDWE53Q/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":"2026-06-12T06:54:07Z","links":{"resolver":"https://pith.science/pith/TZ6HWYOBUER3JOXXXFUDDWE53Q","bundle":"https://pith.science/pith/TZ6HWYOBUER3JOXXXFUDDWE53Q/bundle.json","state":"https://pith.science/pith/TZ6HWYOBUER3JOXXXFUDDWE53Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TZ6HWYOBUER3JOXXXFUDDWE53Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:TZ6HWYOBUER3JOXXXFUDDWE53Q","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":"20e6bb7b095aceb711b3eeebbaf4a0e79670a394291086380714d9c6b96bd091","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-15T10:40:11Z","title_canon_sha256":"a03ba60de910dd351c08619af28fd3c4a69c14ebd65af5e21d9feb20fb01c7b4"},"schema_version":"1.0","source":{"id":"1310.3997","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.3997","created_at":"2026-05-18T01:47:05Z"},{"alias_kind":"arxiv_version","alias_value":"1310.3997v1","created_at":"2026-05-18T01:47:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.3997","created_at":"2026-05-18T01:47:05Z"},{"alias_kind":"pith_short_12","alias_value":"TZ6HWYOBUER3","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TZ6HWYOBUER3JOXX","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TZ6HWYOB","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:5657ad63c4bbf4739054ca83a9aa0ed335e8369adca33bd9c54ae286e176c6dc","target":"graph","created_at":"2026-05-18T01:47:05Z","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":"The colliding winds in a massive binary system generate synchrotron emission due to a fraction of electrons that have been accelerated to relativistic speeds around the shocks in the colliding-wind region. We studied the radio light curve of 9 Sgr = HD 164794, a massive O-type binary with a 9.1-yr period. We investigated whether the radio emission varies consistently with orbital phase and we determined some parameters of the colliding-wind region. We reduced a large set of archive data from the Very Large Array (VLA) to determine the radio light curve of 9 Sgr at 2, 3.6, 6 and 20 cm. We also ","authors_text":"D. Volpi, R. Blomme","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-15T10:40:11Z","title":"Non-thermal radio emission from O-type stars. V. 9 Sgr"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.3997","kind":"arxiv","version":1},"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":"sha256:1b2b2cdcf05215f13ac9229198c18919713d91f4255b7e31ced9588dbdb75d1c","target":"record","created_at":"2026-05-18T01:47:05Z","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":"20e6bb7b095aceb711b3eeebbaf4a0e79670a394291086380714d9c6b96bd091","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-15T10:40:11Z","title_canon_sha256":"a03ba60de910dd351c08619af28fd3c4a69c14ebd65af5e21d9feb20fb01c7b4"},"schema_version":"1.0","source":{"id":"1310.3997","kind":"arxiv","version":1}},"canonical_sha256":"9e7c7b61c1a123b4baf7b96831d89ddc026bba7bc88121fc013627d50f8f2cab","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e7c7b61c1a123b4baf7b96831d89ddc026bba7bc88121fc013627d50f8f2cab","first_computed_at":"2026-05-18T01:47:05.257345Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:05.257345Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F/MRFuGBb2nwJqgIlfdoHy7BkYBALGZJ38UMQvFlqvH1qpz+Xs+K9d/9xMZim9HOZnYGQcaugrjOafRxzHbsCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:05.257931Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.3997","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b2b2cdcf05215f13ac9229198c18919713d91f4255b7e31ced9588dbdb75d1c","sha256:5657ad63c4bbf4739054ca83a9aa0ed335e8369adca33bd9c54ae286e176c6dc"],"state_sha256":"7c7c764af6e3e2c7a530f512142d69be1ec0db65e68523e67d2440b9f9b756f1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iKQmJdWzDj9uAZg1jUN2e/04i+qz5B3oNqi2pkjeM2seRu4P6wFoh423qLKAUeMRwguTbD//8IXAbJ92ORNsCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T06:54:07.465190Z","bundle_sha256":"51ccfd75cd94f9632ae198680627ec3aec4918b94a7652234e9ddc02fff286ec"}}