{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:SRAQXZIVR4BUD4IOE6E5U2V47W","short_pith_number":"pith:SRAQXZIV","canonical_record":{"source":{"id":"1804.02198","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-06T10:48:01Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"85c08a9d00cf132181556686e7e8dadf33b48a227307916154147406751086ee","abstract_canon_sha256":"bbb2bea30ae7ae57c0f8ac1a066b450a7574f44d7459e353735ded23bce39416"},"schema_version":"1.0"},"canonical_sha256":"94410be5158f0341f10e2789da6abcfd87e3045ea5fdaa3f0e9e6b399214d7d5","source":{"kind":"arxiv","id":"1804.02198","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.02198","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"arxiv_version","alias_value":"1804.02198v1","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.02198","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"pith_short_12","alias_value":"SRAQXZIVR4BU","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SRAQXZIVR4BUD4IO","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SRAQXZIV","created_at":"2026-05-18T12:32:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:SRAQXZIVR4BUD4IOE6E5U2V47W","target":"record","payload":{"canonical_record":{"source":{"id":"1804.02198","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-06T10:48:01Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"85c08a9d00cf132181556686e7e8dadf33b48a227307916154147406751086ee","abstract_canon_sha256":"bbb2bea30ae7ae57c0f8ac1a066b450a7574f44d7459e353735ded23bce39416"},"schema_version":"1.0"},"canonical_sha256":"94410be5158f0341f10e2789da6abcfd87e3045ea5fdaa3f0e9e6b399214d7d5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:19:05.590042Z","signature_b64":"6v1QB3q4NtHaylkRoduH/vpQZPkEIFXlxyRc8Ym+YYLmB8QhWVEOEQ9GV0rgUPrztCaAQM8/toWbUBZ2cggIBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"94410be5158f0341f10e2789da6abcfd87e3045ea5fdaa3f0e9e6b399214d7d5","last_reissued_at":"2026-05-18T00:19:05.589428Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:19:05.589428Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.02198","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":"2026-05-18T00:19:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Uu+AFBhLzDCr9HmB1xmyak78OqjmE4zG3oavea+GTRYx9UWIrLRjgzZNyQeieTe7uG7ntEvgXXjKpEVmU80eAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:23:26.148511Z"},"content_sha256":"0a266996c1bef6c24505f17f3549c13eac6383afed69f590bf27c07c303f7bd1","schema_version":"1.0","event_id":"sha256:0a266996c1bef6c24505f17f3549c13eac6383afed69f590bf27c07c303f7bd1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:SRAQXZIVR4BUD4IOE6E5U2V47W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A wide and collimated radio jet in 3C 84 on the scale of a few hundred gravitational radii","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A.P. Lobanov, B.W. Sohn, F. D'Ammando, G. Bruni, G. Giovannini, H. Nagai, J.A. Zensus, J. Hodgson, J.M. Anderson, K. Hada, K.V. Sokolovsky, L. Petrov, M. Giroletti, M. Honma, M. Kino, M.M. Lisakov, M. Nakamura, M. Orienti, P.A. Voitsik, R. Lico, S.-S. Lee, S. Tingay, T.P. Krichbaum, T. Savolainen, Y.Y. Kovalev","submitted_at":"2018-04-06T10:48:01Z","abstract_excerpt":"Understanding the launching, acceleration, and collimation of jets powered by active galactic nuclei remains an outstanding problem in relativistic astrophysics. This is partly because observational tests of jet formation models suffer from the limited angular resolution of ground-based very long baseline interferometry that has thus far been able to probe the transverse jet structure in the acceleration and collimation zone of only two sources. Here we report radio interferometric observations of 3C 84 (NGC 1275), the central galaxy of the Perseus cluster, made with an array including the orb"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.02198","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":"2026-05-18T00:19:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t1KAXegdddGhJ1yeGIsaEBlP8M2vVY/LhNYbUG2j3d7DRFlh0qllRD22+ycwmZVlvsh16yb4fM1MW2piTjXLAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:23:26.149160Z"},"content_sha256":"d98ea8894abf60fad17815f0939d5c412d026c7c0a789ea0c2f342b2884fac18","schema_version":"1.0","event_id":"sha256:d98ea8894abf60fad17815f0939d5c412d026c7c0a789ea0c2f342b2884fac18"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SRAQXZIVR4BUD4IOE6E5U2V47W/bundle.json","state_url":"https://pith.science/pith/SRAQXZIVR4BUD4IOE6E5U2V47W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SRAQXZIVR4BUD4IOE6E5U2V47W/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":"2026-05-25T17:23:26Z","links":{"resolver":"https://pith.science/pith/SRAQXZIVR4BUD4IOE6E5U2V47W","bundle":"https://pith.science/pith/SRAQXZIVR4BUD4IOE6E5U2V47W/bundle.json","state":"https://pith.science/pith/SRAQXZIVR4BUD4IOE6E5U2V47W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SRAQXZIVR4BUD4IOE6E5U2V47W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SRAQXZIVR4BUD4IOE6E5U2V47W","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":"bbb2bea30ae7ae57c0f8ac1a066b450a7574f44d7459e353735ded23bce39416","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-06T10:48:01Z","title_canon_sha256":"85c08a9d00cf132181556686e7e8dadf33b48a227307916154147406751086ee"},"schema_version":"1.0","source":{"id":"1804.02198","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.02198","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"arxiv_version","alias_value":"1804.02198v1","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.02198","created_at":"2026-05-18T00:19:05Z"},{"alias_kind":"pith_short_12","alias_value":"SRAQXZIVR4BU","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SRAQXZIVR4BUD4IO","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SRAQXZIV","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:d98ea8894abf60fad17815f0939d5c412d026c7c0a789ea0c2f342b2884fac18","target":"graph","created_at":"2026-05-18T00:19:05Z","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":"Understanding the launching, acceleration, and collimation of jets powered by active galactic nuclei remains an outstanding problem in relativistic astrophysics. This is partly because observational tests of jet formation models suffer from the limited angular resolution of ground-based very long baseline interferometry that has thus far been able to probe the transverse jet structure in the acceleration and collimation zone of only two sources. Here we report radio interferometric observations of 3C 84 (NGC 1275), the central galaxy of the Perseus cluster, made with an array including the orb","authors_text":"A.P. Lobanov, B.W. Sohn, F. D'Ammando, G. Bruni, G. Giovannini, H. Nagai, J.A. Zensus, J. Hodgson, J.M. Anderson, K. Hada, K.V. Sokolovsky, L. Petrov, M. Giroletti, M. Honma, M. Kino, M.M. Lisakov, M. Nakamura, M. Orienti, P.A. Voitsik, R. Lico, S.-S. Lee, S. Tingay, T.P. Krichbaum, T. Savolainen, Y.Y. Kovalev","cross_cats":["astro-ph.HE"],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-06T10:48:01Z","title":"A wide and collimated radio jet in 3C 84 on the scale of a few hundred gravitational radii"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.02198","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":"sha256:0a266996c1bef6c24505f17f3549c13eac6383afed69f590bf27c07c303f7bd1","target":"record","created_at":"2026-05-18T00:19:05Z","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":"bbb2bea30ae7ae57c0f8ac1a066b450a7574f44d7459e353735ded23bce39416","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-06T10:48:01Z","title_canon_sha256":"85c08a9d00cf132181556686e7e8dadf33b48a227307916154147406751086ee"},"schema_version":"1.0","source":{"id":"1804.02198","kind":"arxiv","version":1}},"canonical_sha256":"94410be5158f0341f10e2789da6abcfd87e3045ea5fdaa3f0e9e6b399214d7d5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"94410be5158f0341f10e2789da6abcfd87e3045ea5fdaa3f0e9e6b399214d7d5","first_computed_at":"2026-05-18T00:19:05.589428Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:19:05.589428Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6v1QB3q4NtHaylkRoduH/vpQZPkEIFXlxyRc8Ym+YYLmB8QhWVEOEQ9GV0rgUPrztCaAQM8/toWbUBZ2cggIBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:19:05.590042Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.02198","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0a266996c1bef6c24505f17f3549c13eac6383afed69f590bf27c07c303f7bd1","sha256:d98ea8894abf60fad17815f0939d5c412d026c7c0a789ea0c2f342b2884fac18"],"state_sha256":"39ec779e4fb0cc98eb6714995bd18e6cf79c14a9fdbf9ad495bc30a3018379c5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/6pYJAZJWtcqaiqYUZ1W0Ehm4+/Kt8Akw1pPh4FBhm46f+BayucdHR5V//eiaULIvIBkKe4FTZkE8QaYbpVTAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:23:26.152462Z","bundle_sha256":"b406ac21cd1fa40b3283863c8999d4b9de27fcd1c66bc620741451458e6f42f3"}}