{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:Y36JIMZI3YEGFF6TAV6KFAZV2C","short_pith_number":"pith:Y36JIMZI","canonical_record":{"source":{"id":"astro-ph/0408171","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-08-10T02:32:39Z","cross_cats_sorted":[],"title_canon_sha256":"8ab905524c8d0764e8968f02d8ce67372269fa980073f1d655df41789d380029","abstract_canon_sha256":"4ba040f486eedfb0b20d6fdc6f36fc9470e2e4012cc42e46aafd625871ae9e2b"},"schema_version":"1.0"},"canonical_sha256":"c6fc943328de086297d3057ca28335d08b19bd4b2e94a853ca19e2a83a1fb506","source":{"kind":"arxiv","id":"astro-ph/0408171","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0408171","created_at":"2026-07-04T16:44:27Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0408171v1","created_at":"2026-07-04T16:44:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0408171","created_at":"2026-07-04T16:44:27Z"},{"alias_kind":"pith_short_12","alias_value":"Y36JIMZI3YEG","created_at":"2026-07-04T16:44:27Z"},{"alias_kind":"pith_short_16","alias_value":"Y36JIMZI3YEGFF6T","created_at":"2026-07-04T16:44:27Z"},{"alias_kind":"pith_short_8","alias_value":"Y36JIMZI","created_at":"2026-07-04T16:44:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:Y36JIMZI3YEGFF6TAV6KFAZV2C","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0408171","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-08-10T02:32:39Z","cross_cats_sorted":[],"title_canon_sha256":"8ab905524c8d0764e8968f02d8ce67372269fa980073f1d655df41789d380029","abstract_canon_sha256":"4ba040f486eedfb0b20d6fdc6f36fc9470e2e4012cc42e46aafd625871ae9e2b"},"schema_version":"1.0"},"canonical_sha256":"c6fc943328de086297d3057ca28335d08b19bd4b2e94a853ca19e2a83a1fb506","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:44:27.884116Z","signature_b64":"tVeXEEHkuWL0v7AH6jI/Hazdr5kJmvma+cLlEUdDxQTzSydmIR6ywxyEFZU8Xl0Dc7as8/cCumaTDRRJsJyEBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c6fc943328de086297d3057ca28335d08b19bd4b2e94a853ca19e2a83a1fb506","last_reissued_at":"2026-07-04T16:44:27.883733Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:44:27.883733Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0408171","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":"2026-07-04T16:44:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RHhBskld1tK0ZDwxrNcnhwntbaSjztIy5mCywyiRZnwJUvSeS+RsTfYNa+85mLUHQrotE7g0wCi1apxHkTgWDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T17:11:32.122140Z"},"content_sha256":"96ab40d2c65ee56a9b7f089a23b2d88699f13073c298e18eb1255529b08361d6","schema_version":"1.0","event_id":"sha256:96ab40d2c65ee56a9b7f089a23b2d88699f13073c298e18eb1255529b08361d6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:Y36JIMZI3YEGFF6TAV6KFAZV2C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radio and X-ray Observations of PSR B0540-69","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"F. E. Marshall, R. W. Romani, Simon Johnston, W. Zhang","submitted_at":"2004-08-10T02:32:39Z","abstract_excerpt":"PSR B0540-69 is one of a small handful of pulsars known to emit giant pulses and the only extra-galactic pulsar known to do so. We observed the pulsar for a total of 72 hr over a 6 month interval and detected 141 giant pulses. We have obtained correct phasing between the radio arrival times of the giant pulses and the X-ray pulse profile. The giant pulses occur in two phase windows, located 6.7 ms before and 5.0 ms after the midpoint of the X-ray profile. We have detected the integrated profile of the pulsar at 1.4 GHz with a flux density of only 24 micro-Jy. The statistics of the giant pulses"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0408171","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0408171/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:44:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4EYdDcjS9D54LDsnr8C0sB7Sw5+iHpavUqrRCWN2o9NWRbLB+UQbn/RLZ0AcmkqwP5oOEKiA12bNkiwKSN2cAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T17:11:32.123036Z"},"content_sha256":"a3808735944b5b32f49f46639152555b878ffd873ee42c46724e6bd86bd9a005","schema_version":"1.0","event_id":"sha256:a3808735944b5b32f49f46639152555b878ffd873ee42c46724e6bd86bd9a005"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y36JIMZI3YEGFF6TAV6KFAZV2C/bundle.json","state_url":"https://pith.science/pith/Y36JIMZI3YEGFF6TAV6KFAZV2C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y36JIMZI3YEGFF6TAV6KFAZV2C/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":"2026-08-10T17:11:32Z","links":{"resolver":"https://pith.science/pith/Y36JIMZI3YEGFF6TAV6KFAZV2C","bundle":"https://pith.science/pith/Y36JIMZI3YEGFF6TAV6KFAZV2C/bundle.json","state":"https://pith.science/pith/Y36JIMZI3YEGFF6TAV6KFAZV2C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y36JIMZI3YEGFF6TAV6KFAZV2C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:Y36JIMZI3YEGFF6TAV6KFAZV2C","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":"4ba040f486eedfb0b20d6fdc6f36fc9470e2e4012cc42e46aafd625871ae9e2b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-08-10T02:32:39Z","title_canon_sha256":"8ab905524c8d0764e8968f02d8ce67372269fa980073f1d655df41789d380029"},"schema_version":"1.0","source":{"id":"astro-ph/0408171","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0408171","created_at":"2026-07-04T16:44:27Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0408171v1","created_at":"2026-07-04T16:44:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0408171","created_at":"2026-07-04T16:44:27Z"},{"alias_kind":"pith_short_12","alias_value":"Y36JIMZI3YEG","created_at":"2026-07-04T16:44:27Z"},{"alias_kind":"pith_short_16","alias_value":"Y36JIMZI3YEGFF6T","created_at":"2026-07-04T16:44:27Z"},{"alias_kind":"pith_short_8","alias_value":"Y36JIMZI","created_at":"2026-07-04T16:44:27Z"}],"graph_snapshots":[{"event_id":"sha256:a3808735944b5b32f49f46639152555b878ffd873ee42c46724e6bd86bd9a005","target":"graph","created_at":"2026-07-04T16:44:27Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0408171/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"PSR B0540-69 is one of a small handful of pulsars known to emit giant pulses and the only extra-galactic pulsar known to do so. We observed the pulsar for a total of 72 hr over a 6 month interval and detected 141 giant pulses. We have obtained correct phasing between the radio arrival times of the giant pulses and the X-ray pulse profile. The giant pulses occur in two phase windows, located 6.7 ms before and 5.0 ms after the midpoint of the X-ray profile. We have detected the integrated profile of the pulsar at 1.4 GHz with a flux density of only 24 micro-Jy. The statistics of the giant pulses","authors_text":"F. E. Marshall, R. W. Romani, Simon Johnston, W. Zhang","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-08-10T02:32:39Z","title":"Radio and X-ray Observations of PSR B0540-69"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0408171","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":"sha256:96ab40d2c65ee56a9b7f089a23b2d88699f13073c298e18eb1255529b08361d6","target":"record","created_at":"2026-07-04T16:44:27Z","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":"4ba040f486eedfb0b20d6fdc6f36fc9470e2e4012cc42e46aafd625871ae9e2b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-08-10T02:32:39Z","title_canon_sha256":"8ab905524c8d0764e8968f02d8ce67372269fa980073f1d655df41789d380029"},"schema_version":"1.0","source":{"id":"astro-ph/0408171","kind":"arxiv","version":1}},"canonical_sha256":"c6fc943328de086297d3057ca28335d08b19bd4b2e94a853ca19e2a83a1fb506","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c6fc943328de086297d3057ca28335d08b19bd4b2e94a853ca19e2a83a1fb506","first_computed_at":"2026-07-04T16:44:27.883733Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:44:27.883733Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tVeXEEHkuWL0v7AH6jI/Hazdr5kJmvma+cLlEUdDxQTzSydmIR6ywxyEFZU8Xl0Dc7as8/cCumaTDRRJsJyEBA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:44:27.884116Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0408171","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:96ab40d2c65ee56a9b7f089a23b2d88699f13073c298e18eb1255529b08361d6","sha256:a3808735944b5b32f49f46639152555b878ffd873ee42c46724e6bd86bd9a005"],"state_sha256":"5d628b8138e0c1ff3f89bc3d6897ef7ef5c9b284f9b6a1bd5d089056050ad60e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o4vzaKX20oEalxYgUudWB1UN0QD8dKSJwmpBxYh32BYwKpK4dj+YpjJnPQYKzyHCtQWOAtIu9s5weciN+gyNBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T17:11:32.129362Z","bundle_sha256":"a4ec2261d75cf3efa5967badfb3c3e5de29dbd7fe22ad429e235c42b645a8e2d"}}