{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:IWXHS43INSGLUHRM3UWNXWGLEL","short_pith_number":"pith:IWXHS43I","canonical_record":{"source":{"id":"1909.00785","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-09-02T16:19:20Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"8180f3072ac25c91412610d4d0710e67c5d650f41d0236213cdf2e3e634b793b","abstract_canon_sha256":"9770d015e470f4e44a6679f10958a6cf0cb1cf29be12a8a8c426c5e3dbb98563"},"schema_version":"1.0"},"canonical_sha256":"45ae7973686c8cba1e2cdd2cdbd8cb22d75fb0a14e1f2d35d8a05bc967d52858","source":{"kind":"arxiv","id":"1909.00785","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.00785","created_at":"2026-07-05T00:32:13Z"},{"alias_kind":"arxiv_version","alias_value":"1909.00785v1","created_at":"2026-07-05T00:32:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.00785","created_at":"2026-07-05T00:32:13Z"},{"alias_kind":"pith_short_12","alias_value":"IWXHS43INSGL","created_at":"2026-07-05T00:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"IWXHS43INSGLUHRM","created_at":"2026-07-05T00:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"IWXHS43I","created_at":"2026-07-05T00:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:IWXHS43INSGLUHRM3UWNXWGLEL","target":"record","payload":{"canonical_record":{"source":{"id":"1909.00785","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-09-02T16:19:20Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"8180f3072ac25c91412610d4d0710e67c5d650f41d0236213cdf2e3e634b793b","abstract_canon_sha256":"9770d015e470f4e44a6679f10958a6cf0cb1cf29be12a8a8c426c5e3dbb98563"},"schema_version":"1.0"},"canonical_sha256":"45ae7973686c8cba1e2cdd2cdbd8cb22d75fb0a14e1f2d35d8a05bc967d52858","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:32:13.892153Z","signature_b64":"6hjiKibn/p3IRnm9ELavk1XvlmovpcbY/rZaMYBo6m9Jy2MQUwow7D+vuhces/wflK9ldUtNhcdweuur/op+Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"45ae7973686c8cba1e2cdd2cdbd8cb22d75fb0a14e1f2d35d8a05bc967d52858","last_reissued_at":"2026-07-05T00:32:13.891584Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:32:13.891584Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1909.00785","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":"2026-07-05T00:32:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EPyqWUb4mshHmHoGzQKFyPDPl7pIQMXHzv4W+hwhxg6PHsaMnStEtNQkTxT0trOewGQHG6ct2FQ0g6uEmpbQDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T13:30:31.382051Z"},"content_sha256":"97eb64d5345cd919b9f402f1abdd4eb12081afe78c22b54d59d93c0bd511d5ae","schema_version":"1.0","event_id":"sha256:97eb64d5345cd919b9f402f1abdd4eb12081afe78c22b54d59d93c0bd511d5ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:IWXHS43INSGLUHRM3UWNXWGLEL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detection statistics of the RadioAstron AGN survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. B. Pushkarev, A. E. Melnikov, A. G. Rudnitskiy, A. Melis, A. M. Kutkin, A. Polatidis, A. S. Andrianov, A. V. Kovalenko, C. Garcia-Miro, C. J. Phillips, C. Migoni, C. Reynolds, D. G. Nair, D. L. Jauncey, D. V. Ivanov, E. V. Kravchenko, F. D. Ghigo, G. Giovannini, H. E. Bignall, I. A. Girin, I. A. Rakhimov, I. D. Litovchenko, I. N. Pashchenko, J. A. Zensus, J. F. H. Quick, J. M. Anderson, J. N. McCallum, J. R. Rizzo, J. Y. Koay, K. V. Sokolovsky, L. I. Gurvits, M. A. Kharinov, M. A. Shchurov, M. Giroletti, M. Kunert-Bajraszewska, M. M. Lisakov, M. P. Gawronski, M. S. Burgin, M. V. Shatskaya, N. Bartel, N. N. Shakhvorostova, N. S. Kardashev, P. A. Voitsik, P. de Vicente, P. G. Edwards, P. Wolak, R. C. Vermeulen, S. F. Likhachev, S. Frey, S. Horiuchi, S. P. Ellingsen, T. An, T. Ghosh, T. Savolainen, V. A. Zuga, V. I. Kostenko, V. Yu. Avdeev, Yu. A. Kovalev, Y. Y. Kovalev, Z.-Q. Shen","submitted_at":"2019-09-02T16:19:20Z","abstract_excerpt":"The largest Key Science Program of the RadioAstron space VLBI mission is a survey of active galactic nuclei (AGN). The main goal of the survey is to measure and study the brightness of AGN cores in order to better understand the physics of their emission while taking interstellar scattering into consideration. In this paper we present detection statistics for observations on ground-space baselines of a complete sample of radio-strong AGN at the wavelengths of 18, 6, and 1.3 cm. Two-thirds of them are indeed detected by RadioAstron and are found to contain extremely compact, tens to hundreds of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.00785","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/1909.00785/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":"2026-07-05T00:32:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+li+VCrsCzwUmS7HPdlheLJBv2GM5Kk+6l/QXwniV3VrJs0CJmYX5pnK9k/6Ou17SlCUGfvHd2+Q6LrU5DvGCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T13:30:31.382706Z"},"content_sha256":"14c647366d3e66439fc3df16b897f602067bceabdd6849d217a096b461eb3f7e","schema_version":"1.0","event_id":"sha256:14c647366d3e66439fc3df16b897f602067bceabdd6849d217a096b461eb3f7e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IWXHS43INSGLUHRM3UWNXWGLEL/bundle.json","state_url":"https://pith.science/pith/IWXHS43INSGLUHRM3UWNXWGLEL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IWXHS43INSGLUHRM3UWNXWGLEL/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":"2026-07-05T13:30:31Z","links":{"resolver":"https://pith.science/pith/IWXHS43INSGLUHRM3UWNXWGLEL","bundle":"https://pith.science/pith/IWXHS43INSGLUHRM3UWNXWGLEL/bundle.json","state":"https://pith.science/pith/IWXHS43INSGLUHRM3UWNXWGLEL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IWXHS43INSGLUHRM3UWNXWGLEL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:IWXHS43INSGLUHRM3UWNXWGLEL","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":"9770d015e470f4e44a6679f10958a6cf0cb1cf29be12a8a8c426c5e3dbb98563","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-09-02T16:19:20Z","title_canon_sha256":"8180f3072ac25c91412610d4d0710e67c5d650f41d0236213cdf2e3e634b793b"},"schema_version":"1.0","source":{"id":"1909.00785","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.00785","created_at":"2026-07-05T00:32:13Z"},{"alias_kind":"arxiv_version","alias_value":"1909.00785v1","created_at":"2026-07-05T00:32:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.00785","created_at":"2026-07-05T00:32:13Z"},{"alias_kind":"pith_short_12","alias_value":"IWXHS43INSGL","created_at":"2026-07-05T00:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"IWXHS43INSGLUHRM","created_at":"2026-07-05T00:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"IWXHS43I","created_at":"2026-07-05T00:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:14c647366d3e66439fc3df16b897f602067bceabdd6849d217a096b461eb3f7e","target":"graph","created_at":"2026-07-05T00:32:13Z","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/1909.00785/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The largest Key Science Program of the RadioAstron space VLBI mission is a survey of active galactic nuclei (AGN). The main goal of the survey is to measure and study the brightness of AGN cores in order to better understand the physics of their emission while taking interstellar scattering into consideration. In this paper we present detection statistics for observations on ground-space baselines of a complete sample of radio-strong AGN at the wavelengths of 18, 6, and 1.3 cm. Two-thirds of them are indeed detected by RadioAstron and are found to contain extremely compact, tens to hundreds of","authors_text":"A. B. Pushkarev, A. E. Melnikov, A. G. Rudnitskiy, A. Melis, A. M. Kutkin, A. Polatidis, A. S. Andrianov, A. V. Kovalenko, C. Garcia-Miro, C. J. Phillips, C. Migoni, C. Reynolds, D. G. Nair, D. L. Jauncey, D. V. Ivanov, E. V. Kravchenko, F. D. Ghigo, G. Giovannini, H. E. Bignall, I. A. Girin, I. A. Rakhimov, I. D. Litovchenko, I. N. Pashchenko, J. A. Zensus, J. F. H. Quick, J. M. Anderson, J. N. McCallum, J. R. Rizzo, J. Y. Koay, K. V. Sokolovsky, L. I. Gurvits, M. A. Kharinov, M. A. Shchurov, M. Giroletti, M. Kunert-Bajraszewska, M. M. Lisakov, M. P. Gawronski, M. S. Burgin, M. V. Shatskaya, N. Bartel, N. N. Shakhvorostova, N. S. Kardashev, P. A. Voitsik, P. de Vicente, P. G. Edwards, P. Wolak, R. C. Vermeulen, S. F. Likhachev, S. Frey, S. Horiuchi, S. P. Ellingsen, T. An, T. Ghosh, T. Savolainen, V. A. Zuga, V. I. Kostenko, V. Yu. Avdeev, Yu. A. Kovalev, Y. Y. Kovalev, Z.-Q. Shen","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-09-02T16:19:20Z","title":"Detection statistics of the RadioAstron AGN survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.00785","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":"sha256:97eb64d5345cd919b9f402f1abdd4eb12081afe78c22b54d59d93c0bd511d5ae","target":"record","created_at":"2026-07-05T00:32:13Z","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":"9770d015e470f4e44a6679f10958a6cf0cb1cf29be12a8a8c426c5e3dbb98563","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-09-02T16:19:20Z","title_canon_sha256":"8180f3072ac25c91412610d4d0710e67c5d650f41d0236213cdf2e3e634b793b"},"schema_version":"1.0","source":{"id":"1909.00785","kind":"arxiv","version":1}},"canonical_sha256":"45ae7973686c8cba1e2cdd2cdbd8cb22d75fb0a14e1f2d35d8a05bc967d52858","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"45ae7973686c8cba1e2cdd2cdbd8cb22d75fb0a14e1f2d35d8a05bc967d52858","first_computed_at":"2026-07-05T00:32:13.891584Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:32:13.891584Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6hjiKibn/p3IRnm9ELavk1XvlmovpcbY/rZaMYBo6m9Jy2MQUwow7D+vuhces/wflK9ldUtNhcdweuur/op+Cw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:32:13.892153Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.00785","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:97eb64d5345cd919b9f402f1abdd4eb12081afe78c22b54d59d93c0bd511d5ae","sha256:14c647366d3e66439fc3df16b897f602067bceabdd6849d217a096b461eb3f7e"],"state_sha256":"ce5c303b6aaa52142f67675a0f85f21c273559e7b9041022d7a4894be99a377d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GReZFAsfFiwGhSem2WGx+QogtkNBR5FutPR1pEZ5I2CC4QU/h9TpdBPGjKhADJVAd/6/jeRV20TAm77zqsJFCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T13:30:31.386168Z","bundle_sha256":"3da290224892fe57c0ee15e31877917227511a1052bfe2f20f9eccc8c64c6925"}}