{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:BMZJJHGKWIQVJ3HZ4LIHQSSJAS","short_pith_number":"pith:BMZJJHGK","canonical_record":{"source":{"id":"0909.4615","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-25T06:09:56Z","cross_cats_sorted":[],"title_canon_sha256":"7243aab58fd228b35c01608443e85d25731054e7136296e67881eeaae4ccf32d","abstract_canon_sha256":"397329b16046011bb328af4888c3a0734d80d11a05c39c807cab09c8529ed2ef"},"schema_version":"1.0"},"canonical_sha256":"0b32949ccab22154ecf9e2d0784a49048c14ff84454341111fec1ac9adfd7f6b","source":{"kind":"arxiv","id":"0909.4615","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.4615","created_at":"2026-05-18T03:12:22Z"},{"alias_kind":"arxiv_version","alias_value":"0909.4615v2","created_at":"2026-05-18T03:12:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.4615","created_at":"2026-05-18T03:12:22Z"},{"alias_kind":"pith_short_12","alias_value":"BMZJJHGKWIQV","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"BMZJJHGKWIQVJ3HZ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"BMZJJHGK","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:BMZJJHGKWIQVJ3HZ4LIHQSSJAS","target":"record","payload":{"canonical_record":{"source":{"id":"0909.4615","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-25T06:09:56Z","cross_cats_sorted":[],"title_canon_sha256":"7243aab58fd228b35c01608443e85d25731054e7136296e67881eeaae4ccf32d","abstract_canon_sha256":"397329b16046011bb328af4888c3a0734d80d11a05c39c807cab09c8529ed2ef"},"schema_version":"1.0"},"canonical_sha256":"0b32949ccab22154ecf9e2d0784a49048c14ff84454341111fec1ac9adfd7f6b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:12:22.981018Z","signature_b64":"AWI4VdX9QQttbZaLNrbMv/L4pNqWtvOAERuTam+KL8rGQyYHS6bIbtzkpbXVXtauBQ5iKw0dJAtfrj6/kWo/BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0b32949ccab22154ecf9e2d0784a49048c14ff84454341111fec1ac9adfd7f6b","last_reissued_at":"2026-05-18T03:12:22.980139Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:12:22.980139Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0909.4615","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":"2026-05-18T03:12:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wmm/qekhQCiqY8Ek9QhtdXwRT9H9Ev3yPOlFTmr1R04Hqu3sNVMBUQH6xaQSAo+hf8bLSq9GOBCJU7tR94kaCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T11:43:55.004984Z"},"content_sha256":"2b3ae826890dbafb3a12b9839ba18881f8a727a16cffc254c74b30057ead11e9","schema_version":"1.0","event_id":"sha256:2b3ae826890dbafb3a12b9839ba18881f8a727a16cffc254c74b30057ead11e9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:BMZJJHGKWIQVJ3HZ4LIHQSSJAS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Very Long Baseline Array observations of the Intraday Variable source J1128+592","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"H. G. Song, J. A. Zensus, K. E. Gabanyi, L. Fuhrmann, N. Marchili, P. Muller, T. P. Krichbaum, X. Liu","submitted_at":"2009-09-25T06:09:56Z","abstract_excerpt":"Short time-scale flux density variations of flat spectrum radio sources are often explained by the scattering of radio waves in the turbulent, ionized Interstellar Matter of the Milky Way. One of the most convincing observational arguments in favor of this is the annual modulation of the variability time-scale caused by the Earth orbital motion around the Sun. J1128+592 is an IDV source with a possible annual modulation in its variability time-scale. We observed the source in 6 epochs with the VLBA at 5, 8 and 15 GHz in total intensity and polarization. The VLBA observations revealed an east-w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.4615","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":"2026-05-18T03:12:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xgYdNQkG/96uxMt1ryStI6hthBCI9HgnFh20gK2x9CRFa8hnLHoMeWCdUbrf65MgeSavZ2RRmg4f3JaYwDcnDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T11:43:55.005521Z"},"content_sha256":"317f86ac56f7c245b580643340bee36471c54019baaf87834db0fa7838e209b2","schema_version":"1.0","event_id":"sha256:317f86ac56f7c245b580643340bee36471c54019baaf87834db0fa7838e209b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BMZJJHGKWIQVJ3HZ4LIHQSSJAS/bundle.json","state_url":"https://pith.science/pith/BMZJJHGKWIQVJ3HZ4LIHQSSJAS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BMZJJHGKWIQVJ3HZ4LIHQSSJAS/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":"2026-05-31T11:43:55Z","links":{"resolver":"https://pith.science/pith/BMZJJHGKWIQVJ3HZ4LIHQSSJAS","bundle":"https://pith.science/pith/BMZJJHGKWIQVJ3HZ4LIHQSSJAS/bundle.json","state":"https://pith.science/pith/BMZJJHGKWIQVJ3HZ4LIHQSSJAS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BMZJJHGKWIQVJ3HZ4LIHQSSJAS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:BMZJJHGKWIQVJ3HZ4LIHQSSJAS","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":"397329b16046011bb328af4888c3a0734d80d11a05c39c807cab09c8529ed2ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-25T06:09:56Z","title_canon_sha256":"7243aab58fd228b35c01608443e85d25731054e7136296e67881eeaae4ccf32d"},"schema_version":"1.0","source":{"id":"0909.4615","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.4615","created_at":"2026-05-18T03:12:22Z"},{"alias_kind":"arxiv_version","alias_value":"0909.4615v2","created_at":"2026-05-18T03:12:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.4615","created_at":"2026-05-18T03:12:22Z"},{"alias_kind":"pith_short_12","alias_value":"BMZJJHGKWIQV","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"BMZJJHGKWIQVJ3HZ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"BMZJJHGK","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:317f86ac56f7c245b580643340bee36471c54019baaf87834db0fa7838e209b2","target":"graph","created_at":"2026-05-18T03:12:22Z","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":"Short time-scale flux density variations of flat spectrum radio sources are often explained by the scattering of radio waves in the turbulent, ionized Interstellar Matter of the Milky Way. One of the most convincing observational arguments in favor of this is the annual modulation of the variability time-scale caused by the Earth orbital motion around the Sun. J1128+592 is an IDV source with a possible annual modulation in its variability time-scale. We observed the source in 6 epochs with the VLBA at 5, 8 and 15 GHz in total intensity and polarization. The VLBA observations revealed an east-w","authors_text":"H. G. Song, J. A. Zensus, K. E. Gabanyi, L. Fuhrmann, N. Marchili, P. Muller, T. P. Krichbaum, X. Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-25T06:09:56Z","title":"Very Long Baseline Array observations of the Intraday Variable source J1128+592"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.4615","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":"sha256:2b3ae826890dbafb3a12b9839ba18881f8a727a16cffc254c74b30057ead11e9","target":"record","created_at":"2026-05-18T03:12:22Z","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":"397329b16046011bb328af4888c3a0734d80d11a05c39c807cab09c8529ed2ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-25T06:09:56Z","title_canon_sha256":"7243aab58fd228b35c01608443e85d25731054e7136296e67881eeaae4ccf32d"},"schema_version":"1.0","source":{"id":"0909.4615","kind":"arxiv","version":2}},"canonical_sha256":"0b32949ccab22154ecf9e2d0784a49048c14ff84454341111fec1ac9adfd7f6b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b32949ccab22154ecf9e2d0784a49048c14ff84454341111fec1ac9adfd7f6b","first_computed_at":"2026-05-18T03:12:22.980139Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:12:22.980139Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AWI4VdX9QQttbZaLNrbMv/L4pNqWtvOAERuTam+KL8rGQyYHS6bIbtzkpbXVXtauBQ5iKw0dJAtfrj6/kWo/BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:12:22.981018Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.4615","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b3ae826890dbafb3a12b9839ba18881f8a727a16cffc254c74b30057ead11e9","sha256:317f86ac56f7c245b580643340bee36471c54019baaf87834db0fa7838e209b2"],"state_sha256":"074d7c5816e5ad8f4d5b72ffdb14d13e44daaf7e6f50ae035aae83d43cf4b9bd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dsCSqeoHG2fs9aQqWaXIdTG4oJiuRFXP+6/uThb4pJhp27WGWeXhHo2D/Xc87J1odlOi41qZurK0Rgv+KIWFDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T11:43:55.007725Z","bundle_sha256":"96c6b53ea5f3c43cb9300770bf6fd385455904368cdc9dd729ea98bb56e4c13d"}}