{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:GIWCOASZ6H4Z5JTPUZGK23KX5W","short_pith_number":"pith:GIWCOASZ","canonical_record":{"source":{"id":"1203.2184","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-03-09T21:00:36Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"16adfaa474ffc1851cc6c38c9df09270a41112fb1a87c18a46fe11e2654c7af5","abstract_canon_sha256":"daab370d805a2befec43b15166bd7f082aa7925c1a432ec3121eefd5ae639576"},"schema_version":"1.0"},"canonical_sha256":"322c270259f1f99ea66fa64cad6d57eda4a4473976af780759712ffc150d55b8","source":{"kind":"arxiv","id":"1203.2184","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.2184","created_at":"2026-05-18T03:53:44Z"},{"alias_kind":"arxiv_version","alias_value":"1203.2184v2","created_at":"2026-05-18T03:53:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.2184","created_at":"2026-05-18T03:53:44Z"},{"alias_kind":"pith_short_12","alias_value":"GIWCOASZ6H4Z","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"GIWCOASZ6H4Z5JTP","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"GIWCOASZ","created_at":"2026-05-18T12:27:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:GIWCOASZ6H4Z5JTPUZGK23KX5W","target":"record","payload":{"canonical_record":{"source":{"id":"1203.2184","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-03-09T21:00:36Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"16adfaa474ffc1851cc6c38c9df09270a41112fb1a87c18a46fe11e2654c7af5","abstract_canon_sha256":"daab370d805a2befec43b15166bd7f082aa7925c1a432ec3121eefd5ae639576"},"schema_version":"1.0"},"canonical_sha256":"322c270259f1f99ea66fa64cad6d57eda4a4473976af780759712ffc150d55b8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:53:44.815170Z","signature_b64":"U9rJA6Cguf5hVNgppIRWgzKGa6ZLmZY7gTq64lOwjkcCok57o7jXDnq7qV3aHCNWYc8NUJNbtPUYIyGDCnxIDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"322c270259f1f99ea66fa64cad6d57eda4a4473976af780759712ffc150d55b8","last_reissued_at":"2026-05-18T03:53:44.814678Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:53:44.814678Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.2184","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":"2026-05-18T03:53:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T7ZXc9fIBTBm7LC92/FBSEMRcPI+J3GXsVXDQKqRVOWwfgX/HsmMHt164FN6eHBhG01BkN+zvsGICDwVXTDRDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:34:08.413078Z"},"content_sha256":"8e181d29dc880c97a3e916ea418e8d2898d4f47331b0ee2c40af33a16deb34db","schema_version":"1.0","event_id":"sha256:8e181d29dc880c97a3e916ea418e8d2898d4f47331b0ee2c40af33a16deb34db"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:GIWCOASZ6H4Z5JTPUZGK23KX5W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing axion-like particles with the ultraviolet photon polarization from active galactic nuclei in radio galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"A. Mirizzi, D. Horns, L. Maccione, M. Roncadelli","submitted_at":"2012-03-09T21:00:36Z","abstract_excerpt":"The mixing of photons with axion-like particles (ALPs) in the large-scale magnetic field $B$ changes the polarization angle of a linearly polarized photon beam from active galactic nuclei in radio galaxies as it propagates over cosmological distances. Using available ultraviolet polarization data concerning these sources we derive a new bound on the product of the photon-ALP coupling $g_{a\\gamma}$ times $B$. We find $g_{a\\gamma} B \\lesssim 10^{-11}$ GeV$^{-1}$ nG for ultralight ALPs with $m_a \\lesssim 10^{-15}$ eV. We compare our new bound with the ones present in the literature and we comment"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.2184","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":"2026-05-18T03:53:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8B7VlDzUfc1EjLr5s7ovHueYmu3TwctvziKX9PYd5jtV71gvx8NJXXuV9sE5+qgey27QoYs4pyo/T7v9s2ZuDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:34:08.413854Z"},"content_sha256":"b8bd135483401b80251dfe74ae6dd022d3c24aadcb6f6da78f33cc3741749d3a","schema_version":"1.0","event_id":"sha256:b8bd135483401b80251dfe74ae6dd022d3c24aadcb6f6da78f33cc3741749d3a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GIWCOASZ6H4Z5JTPUZGK23KX5W/bundle.json","state_url":"https://pith.science/pith/GIWCOASZ6H4Z5JTPUZGK23KX5W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GIWCOASZ6H4Z5JTPUZGK23KX5W/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":"2026-05-27T02:34:08Z","links":{"resolver":"https://pith.science/pith/GIWCOASZ6H4Z5JTPUZGK23KX5W","bundle":"https://pith.science/pith/GIWCOASZ6H4Z5JTPUZGK23KX5W/bundle.json","state":"https://pith.science/pith/GIWCOASZ6H4Z5JTPUZGK23KX5W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GIWCOASZ6H4Z5JTPUZGK23KX5W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:GIWCOASZ6H4Z5JTPUZGK23KX5W","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":"daab370d805a2befec43b15166bd7f082aa7925c1a432ec3121eefd5ae639576","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-03-09T21:00:36Z","title_canon_sha256":"16adfaa474ffc1851cc6c38c9df09270a41112fb1a87c18a46fe11e2654c7af5"},"schema_version":"1.0","source":{"id":"1203.2184","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.2184","created_at":"2026-05-18T03:53:44Z"},{"alias_kind":"arxiv_version","alias_value":"1203.2184v2","created_at":"2026-05-18T03:53:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.2184","created_at":"2026-05-18T03:53:44Z"},{"alias_kind":"pith_short_12","alias_value":"GIWCOASZ6H4Z","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"GIWCOASZ6H4Z5JTP","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"GIWCOASZ","created_at":"2026-05-18T12:27:06Z"}],"graph_snapshots":[{"event_id":"sha256:b8bd135483401b80251dfe74ae6dd022d3c24aadcb6f6da78f33cc3741749d3a","target":"graph","created_at":"2026-05-18T03:53:44Z","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 mixing of photons with axion-like particles (ALPs) in the large-scale magnetic field $B$ changes the polarization angle of a linearly polarized photon beam from active galactic nuclei in radio galaxies as it propagates over cosmological distances. Using available ultraviolet polarization data concerning these sources we derive a new bound on the product of the photon-ALP coupling $g_{a\\gamma}$ times $B$. We find $g_{a\\gamma} B \\lesssim 10^{-11}$ GeV$^{-1}$ nG for ultralight ALPs with $m_a \\lesssim 10^{-15}$ eV. We compare our new bound with the ones present in the literature and we comment","authors_text":"A. Mirizzi, D. Horns, L. Maccione, M. Roncadelli","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-03-09T21:00:36Z","title":"Probing axion-like particles with the ultraviolet photon polarization from active galactic nuclei in radio galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.2184","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":"sha256:8e181d29dc880c97a3e916ea418e8d2898d4f47331b0ee2c40af33a16deb34db","target":"record","created_at":"2026-05-18T03:53:44Z","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":"daab370d805a2befec43b15166bd7f082aa7925c1a432ec3121eefd5ae639576","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-03-09T21:00:36Z","title_canon_sha256":"16adfaa474ffc1851cc6c38c9df09270a41112fb1a87c18a46fe11e2654c7af5"},"schema_version":"1.0","source":{"id":"1203.2184","kind":"arxiv","version":2}},"canonical_sha256":"322c270259f1f99ea66fa64cad6d57eda4a4473976af780759712ffc150d55b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"322c270259f1f99ea66fa64cad6d57eda4a4473976af780759712ffc150d55b8","first_computed_at":"2026-05-18T03:53:44.814678Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:53:44.814678Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U9rJA6Cguf5hVNgppIRWgzKGa6ZLmZY7gTq64lOwjkcCok57o7jXDnq7qV3aHCNWYc8NUJNbtPUYIyGDCnxIDw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:53:44.815170Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.2184","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8e181d29dc880c97a3e916ea418e8d2898d4f47331b0ee2c40af33a16deb34db","sha256:b8bd135483401b80251dfe74ae6dd022d3c24aadcb6f6da78f33cc3741749d3a"],"state_sha256":"16babb46c61c800908b0aa4aba6ee2dfcd4a473427d2faeee66e3f4839b4af11"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eOMkQhdTkSiol9GzpQzAExk3gRz5Bst2aBKrayUjeQpPzyc9W40ryK/k+0j2LG+ne9mY6orqA7LpHgwn2fyyDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T02:34:08.417715Z","bundle_sha256":"04adf8754f97a55ecadbbc76204e1b5da91f5a0bacb1760a52a2149e2a162ca8"}}