{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:2DBMSYN4DB5PUNX3QTLVHCT23G","short_pith_number":"pith:2DBMSYN4","canonical_record":{"source":{"id":"1404.0014","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-03-31T20:00:20Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"1698055810310a40bf03f972db68f3943c342ac90259ce8cb73cdd3d8887ee04","abstract_canon_sha256":"b4b49d1fa7447bef06222979d5cf2bd23c59528e4a4ddee15ff938f338b895f6"},"schema_version":"1.0"},"canonical_sha256":"d0c2c961bc187afa36fb84d7538a7ad982044d025f88546803d1190ed9277d52","source":{"kind":"arxiv","id":"1404.0014","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.0014","created_at":"2026-05-18T02:52:25Z"},{"alias_kind":"arxiv_version","alias_value":"1404.0014v1","created_at":"2026-05-18T02:52:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.0014","created_at":"2026-05-18T02:52:25Z"},{"alias_kind":"pith_short_12","alias_value":"2DBMSYN4DB5P","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"2DBMSYN4DB5PUNX3","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"2DBMSYN4","created_at":"2026-05-18T12:28:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:2DBMSYN4DB5PUNX3QTLVHCT23G","target":"record","payload":{"canonical_record":{"source":{"id":"1404.0014","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-03-31T20:00:20Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"1698055810310a40bf03f972db68f3943c342ac90259ce8cb73cdd3d8887ee04","abstract_canon_sha256":"b4b49d1fa7447bef06222979d5cf2bd23c59528e4a4ddee15ff938f338b895f6"},"schema_version":"1.0"},"canonical_sha256":"d0c2c961bc187afa36fb84d7538a7ad982044d025f88546803d1190ed9277d52","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:52:25.185068Z","signature_b64":"65aQdlBKlbUHTH8u3gOKdMWMoHUEIgBL1lh3Q8RWYg/PzWWndLEoVKokIg8WzeOJSGbv6tPK1EgWa4ATO2p8BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d0c2c961bc187afa36fb84d7538a7ad982044d025f88546803d1190ed9277d52","last_reissued_at":"2026-05-18T02:52:25.184370Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:52:25.184370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.0014","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":"2026-05-18T02:52:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uGpBIBFBUjva337CjkEkD/INMv+RmCzE1ipOdbbLgkf/dwGeqTpbkpE0/lfcQrEE37r4QxaN6kwMU95msIvVCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:04:41.165634Z"},"content_sha256":"43099cd3254c0be202c3c5fc7c2958dd6d4fbddf43d9aa2a5b31aebe709197a0","schema_version":"1.0","event_id":"sha256:43099cd3254c0be202c3c5fc7c2958dd6d4fbddf43d9aa2a5b31aebe709197a0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:2DBMSYN4DB5PUNX3QTLVHCT23G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. XI. Spectral distributions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Aalto U.), A. B. Pushkarev (Pulkovo, CrAO, D. C. Homan (Denison U.), E. Clausen-Brown (MPIfR), H. D. Aller (U. Michigan), M. F. Aller (U. Michigan), M. L. Lister (Purdue U.), Mpifr), T. Hovatta (Caltech, T. Savolainen (MPIfR), Y. Y. Kovalev (ASC Lebedev","submitted_at":"2014-03-31T20:00:20Z","abstract_excerpt":"We have obtained milliarcsecond-scale spectral index distributions for a sample of 190 extragalactic radio jets through the MOJAVE project. The sources were observed in 2006 at 8.1, 8.4, 12.1, and 15.4 GHz, and we study the four-frequency spectrum in individual jet features. We performed detailed simulations to study the effects of image alignment and (u,v)-plane coverage on the spectral index maps to verify our results. The core spectral indices are on average flat, while the jet spectrum is in general steep with a mean index of -1.04. A simple power-law fit is often inadequate for the core r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.0014","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":"2026-05-18T02:52:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BXqheXoAWz+ZhNOxQ92ytg5S5cLLyop4so8eqbQU+pEK3a56eopz21qPN1mcuAhYrrSidlQ2k1JY45OqNYhEAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:04:41.166348Z"},"content_sha256":"7ffe7192fd777ce9702682853315c3cba042d9a0dd07114079e03411daf308a4","schema_version":"1.0","event_id":"sha256:7ffe7192fd777ce9702682853315c3cba042d9a0dd07114079e03411daf308a4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2DBMSYN4DB5PUNX3QTLVHCT23G/bundle.json","state_url":"https://pith.science/pith/2DBMSYN4DB5PUNX3QTLVHCT23G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2DBMSYN4DB5PUNX3QTLVHCT23G/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":"2026-05-26T07:04:41Z","links":{"resolver":"https://pith.science/pith/2DBMSYN4DB5PUNX3QTLVHCT23G","bundle":"https://pith.science/pith/2DBMSYN4DB5PUNX3QTLVHCT23G/bundle.json","state":"https://pith.science/pith/2DBMSYN4DB5PUNX3QTLVHCT23G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2DBMSYN4DB5PUNX3QTLVHCT23G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:2DBMSYN4DB5PUNX3QTLVHCT23G","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":"b4b49d1fa7447bef06222979d5cf2bd23c59528e4a4ddee15ff938f338b895f6","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-03-31T20:00:20Z","title_canon_sha256":"1698055810310a40bf03f972db68f3943c342ac90259ce8cb73cdd3d8887ee04"},"schema_version":"1.0","source":{"id":"1404.0014","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.0014","created_at":"2026-05-18T02:52:25Z"},{"alias_kind":"arxiv_version","alias_value":"1404.0014v1","created_at":"2026-05-18T02:52:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.0014","created_at":"2026-05-18T02:52:25Z"},{"alias_kind":"pith_short_12","alias_value":"2DBMSYN4DB5P","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"2DBMSYN4DB5PUNX3","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"2DBMSYN4","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:7ffe7192fd777ce9702682853315c3cba042d9a0dd07114079e03411daf308a4","target":"graph","created_at":"2026-05-18T02:52:25Z","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":"We have obtained milliarcsecond-scale spectral index distributions for a sample of 190 extragalactic radio jets through the MOJAVE project. The sources were observed in 2006 at 8.1, 8.4, 12.1, and 15.4 GHz, and we study the four-frequency spectrum in individual jet features. We performed detailed simulations to study the effects of image alignment and (u,v)-plane coverage on the spectral index maps to verify our results. The core spectral indices are on average flat, while the jet spectrum is in general steep with a mean index of -1.04. A simple power-law fit is often inadequate for the core r","authors_text":"Aalto U.), A. B. Pushkarev (Pulkovo, CrAO, D. C. Homan (Denison U.), E. Clausen-Brown (MPIfR), H. D. Aller (U. Michigan), M. F. Aller (U. Michigan), M. L. Lister (Purdue U.), Mpifr), T. Hovatta (Caltech, T. Savolainen (MPIfR), Y. Y. Kovalev (ASC Lebedev","cross_cats":["astro-ph.CO","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-03-31T20:00:20Z","title":"MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. XI. Spectral distributions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.0014","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":"sha256:43099cd3254c0be202c3c5fc7c2958dd6d4fbddf43d9aa2a5b31aebe709197a0","target":"record","created_at":"2026-05-18T02:52:25Z","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":"b4b49d1fa7447bef06222979d5cf2bd23c59528e4a4ddee15ff938f338b895f6","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-03-31T20:00:20Z","title_canon_sha256":"1698055810310a40bf03f972db68f3943c342ac90259ce8cb73cdd3d8887ee04"},"schema_version":"1.0","source":{"id":"1404.0014","kind":"arxiv","version":1}},"canonical_sha256":"d0c2c961bc187afa36fb84d7538a7ad982044d025f88546803d1190ed9277d52","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d0c2c961bc187afa36fb84d7538a7ad982044d025f88546803d1190ed9277d52","first_computed_at":"2026-05-18T02:52:25.184370Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:52:25.184370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"65aQdlBKlbUHTH8u3gOKdMWMoHUEIgBL1lh3Q8RWYg/PzWWndLEoVKokIg8WzeOJSGbv6tPK1EgWa4ATO2p8BA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:52:25.185068Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.0014","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:43099cd3254c0be202c3c5fc7c2958dd6d4fbddf43d9aa2a5b31aebe709197a0","sha256:7ffe7192fd777ce9702682853315c3cba042d9a0dd07114079e03411daf308a4"],"state_sha256":"aa315f5c84572e0d0e57a074bd2336227b5e5fba38ec2a5988a65f703a35bb64"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e2kUzCEIbsjoouBelRL0Y6XaR3F5/Z3qdeND9MFMN+GBAF/57BSmbLpv/wMRKaRpV380X0zuItR8rnZ+HhWeDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T07:04:41.169893Z","bundle_sha256":"bc015874317fc19d80345444c2ad1c52b2ed0409014d0ceb2b092472a60a635c"}}