{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:C42TPRDIP4TITEYFFECZSWMHVL","short_pith_number":"pith:C42TPRDI","canonical_record":{"source":{"id":"0909.0297","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-09-01T23:59:56Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"311f7a18e6d97f8850e8beee2851b9fddeef77c0edab6ad8ea8373e4a7e3dc30","abstract_canon_sha256":"79ec8a7db6f20845382ed0e809489f205a67a965ef27ed2a84a94d2f3776eedc"},"schema_version":"1.0"},"canonical_sha256":"173537c4687f268993052905995987aad3f51de2209e31c95fceda1964c500fb","source":{"kind":"arxiv","id":"0909.0297","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.0297","created_at":"2026-05-18T02:12:00Z"},{"alias_kind":"arxiv_version","alias_value":"0909.0297v1","created_at":"2026-05-18T02:12:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.0297","created_at":"2026-05-18T02:12:00Z"},{"alias_kind":"pith_short_12","alias_value":"C42TPRDIP4TI","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"C42TPRDIP4TITEYF","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"C42TPRDI","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:C42TPRDIP4TITEYFFECZSWMHVL","target":"record","payload":{"canonical_record":{"source":{"id":"0909.0297","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-09-01T23:59:56Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"311f7a18e6d97f8850e8beee2851b9fddeef77c0edab6ad8ea8373e4a7e3dc30","abstract_canon_sha256":"79ec8a7db6f20845382ed0e809489f205a67a965ef27ed2a84a94d2f3776eedc"},"schema_version":"1.0"},"canonical_sha256":"173537c4687f268993052905995987aad3f51de2209e31c95fceda1964c500fb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:00.990587Z","signature_b64":"sSzIvQLD3aWqK9mrk79gzkftVpChzJ5UC/JKUNiBHuyvcyF+S/v87vc1llfqJ0rG4BtSWKW3nW0NM9O1XlUeDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"173537c4687f268993052905995987aad3f51de2209e31c95fceda1964c500fb","last_reissued_at":"2026-05-18T02:12:00.989775Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:00.989775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0909.0297","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":"2026-05-18T02:12:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D7qf8IPMjuOJFw2H2fQo/gYjTdBixaq95k6gUAvIosffqJ6yyu/2j+LDAUtYQrdrQPpA289vDurTeKmB5HG+Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T05:32:20.562194Z"},"content_sha256":"a6d1fdbe300354a413ae3c6f756c64194b64d36b68e290a2e4aadd0ce97ef063","schema_version":"1.0","event_id":"sha256:a6d1fdbe300354a413ae3c6f756c64194b64d36b68e290a2e4aadd0ce97ef063"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:C42TPRDIP4TITEYFFECZSWMHVL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Polarimetry and the High-Energy Emission Mechanisms in Quasar Jets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"A. Martel, C. C. Cheung, C. M. Urry, C. P. O'Dea, D. Axon, D. M. Worrall, E. S. Perlman, L. Stawarz, M. Begelman, M. Birkinshaw, M. Cara, M. Georganopoulos, P. Coppi, R. M. Sambruna, S. A. Baum, S. Jester, W. B. Sparks, Y. Uchiyama","submitted_at":"2009-09-01T23:59:56Z","abstract_excerpt":"The emission mechanisms in extragalactic jets include synchrotron and various inverse-Compton processes. At low (radio through infrared) energies, it is widely agreed that synchrotron emission dominates in both low-power (FR I) and high-power (FR II and quasar) jets, because of the power-law nature of the spectra observed and high polarizations. However, at higher energies, the emission mechanism for high-power jets at kpc scales is hotly debated. Two mechanisms have been proposed: either inverse-Compton of cosmic microwave background photons or synchrotron emission from a second, high-energy "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.0297","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":"2026-05-18T02:12:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5yLGL/qB08lvSzCitTGRD16AzP3qgkysqDVjCsGCDEOXlG2EcQWXvOaEZRz4afJ8JCkhjjyxHYF3PErJBVPvBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T05:32:20.562647Z"},"content_sha256":"71aff97fd616b0815d6d9f92f2c1caa02ebe280a9e534cbe69d6543aef76bba5","schema_version":"1.0","event_id":"sha256:71aff97fd616b0815d6d9f92f2c1caa02ebe280a9e534cbe69d6543aef76bba5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C42TPRDIP4TITEYFFECZSWMHVL/bundle.json","state_url":"https://pith.science/pith/C42TPRDIP4TITEYFFECZSWMHVL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C42TPRDIP4TITEYFFECZSWMHVL/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":"2026-05-19T05:32:20Z","links":{"resolver":"https://pith.science/pith/C42TPRDIP4TITEYFFECZSWMHVL","bundle":"https://pith.science/pith/C42TPRDIP4TITEYFFECZSWMHVL/bundle.json","state":"https://pith.science/pith/C42TPRDIP4TITEYFFECZSWMHVL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C42TPRDIP4TITEYFFECZSWMHVL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:C42TPRDIP4TITEYFFECZSWMHVL","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":"79ec8a7db6f20845382ed0e809489f205a67a965ef27ed2a84a94d2f3776eedc","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-09-01T23:59:56Z","title_canon_sha256":"311f7a18e6d97f8850e8beee2851b9fddeef77c0edab6ad8ea8373e4a7e3dc30"},"schema_version":"1.0","source":{"id":"0909.0297","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.0297","created_at":"2026-05-18T02:12:00Z"},{"alias_kind":"arxiv_version","alias_value":"0909.0297v1","created_at":"2026-05-18T02:12:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.0297","created_at":"2026-05-18T02:12:00Z"},{"alias_kind":"pith_short_12","alias_value":"C42TPRDIP4TI","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"C42TPRDIP4TITEYF","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"C42TPRDI","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:71aff97fd616b0815d6d9f92f2c1caa02ebe280a9e534cbe69d6543aef76bba5","target":"graph","created_at":"2026-05-18T02:12:00Z","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":"The emission mechanisms in extragalactic jets include synchrotron and various inverse-Compton processes. At low (radio through infrared) energies, it is widely agreed that synchrotron emission dominates in both low-power (FR I) and high-power (FR II and quasar) jets, because of the power-law nature of the spectra observed and high polarizations. However, at higher energies, the emission mechanism for high-power jets at kpc scales is hotly debated. Two mechanisms have been proposed: either inverse-Compton of cosmic microwave background photons or synchrotron emission from a second, high-energy ","authors_text":"A. Martel, C. C. Cheung, C. M. Urry, C. P. O'Dea, D. Axon, D. M. Worrall, E. S. Perlman, L. Stawarz, M. Begelman, M. Birkinshaw, M. Cara, M. Georganopoulos, P. Coppi, R. M. Sambruna, S. A. Baum, S. Jester, W. B. Sparks, Y. Uchiyama","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-09-01T23:59:56Z","title":"Polarimetry and the High-Energy Emission Mechanisms in Quasar Jets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.0297","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:a6d1fdbe300354a413ae3c6f756c64194b64d36b68e290a2e4aadd0ce97ef063","target":"record","created_at":"2026-05-18T02:12:00Z","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":"79ec8a7db6f20845382ed0e809489f205a67a965ef27ed2a84a94d2f3776eedc","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-09-01T23:59:56Z","title_canon_sha256":"311f7a18e6d97f8850e8beee2851b9fddeef77c0edab6ad8ea8373e4a7e3dc30"},"schema_version":"1.0","source":{"id":"0909.0297","kind":"arxiv","version":1}},"canonical_sha256":"173537c4687f268993052905995987aad3f51de2209e31c95fceda1964c500fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"173537c4687f268993052905995987aad3f51de2209e31c95fceda1964c500fb","first_computed_at":"2026-05-18T02:12:00.989775Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:00.989775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sSzIvQLD3aWqK9mrk79gzkftVpChzJ5UC/JKUNiBHuyvcyF+S/v87vc1llfqJ0rG4BtSWKW3nW0NM9O1XlUeDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:00.990587Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.0297","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a6d1fdbe300354a413ae3c6f756c64194b64d36b68e290a2e4aadd0ce97ef063","sha256:71aff97fd616b0815d6d9f92f2c1caa02ebe280a9e534cbe69d6543aef76bba5"],"state_sha256":"c6b02a083ac4b3ea42f218184a9578f0bb2af9f1a85247e2f208af1092c18c02"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"So7anscDeLiNENkJAnD/zx9MTbMkJ98ajqpkzuggoIH+j7Mxe27F8KRDn3d+didTBzJNs87RLG+sdOEVc4HnDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T05:32:20.564610Z","bundle_sha256":"49824f84c54ce82144df9847a4440f994b1503fb550b0efc1126f505fc5f505e"}}