{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:IYHOORLK2LP2AQJN4HBXYY52YC","short_pith_number":"pith:IYHOORLK","schema_version":"1.0","canonical_sha256":"460ee7456ad2dfa0412de1c37c63bac0aeecf37192fc8a0e5a998dc45bcbac89","source":{"kind":"arxiv","id":"1102.1177","version":1},"attestation_state":"computed","paper":{"title":"Evidence for an axion-like particle from blazar spectra?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"Alessandro de Angelis, Giorgio Galanti, Marco Roncadelli, Massimo Persic","submitted_at":"2011-02-06T17:29:55Z","abstract_excerpt":"Observations with the Imaging Atmospheric Cherenkov Telescopes H.E.S.S., MAGIC, CANGAROO III and VERITAS have shown that the Universe is more transparent than expected to gamma rays above 100GeV. As a natural explanation, the DARMA scenario has previously been proposed, wherein photons can oscillate into a new very light axionlike particle and vice-versa in the presence of cosmic magnetic fields. Here we demonstrate that the most recent observations further support the DARMA scenario, thereby making the existence of a very light axion-like particle more likely."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1102.1177","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-06T17:29:55Z","cross_cats_sorted":["astro-ph.CO","hep-ph"],"title_canon_sha256":"b1a9a7e715d1633278f6fbe6d69aaf64727a7fe4244a88282d1eb2e17cc44963","abstract_canon_sha256":"177072d104709886b587b9775772f4f6655656b48af6f3f414e486682020650b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:54.842210Z","signature_b64":"5YA1rRAtP4M8qXH6UYq3TzIx/6qxxF1EaOdANjFDJVO3GGR/VsQ45OO7IWT3E0ZSTjMpPV52YihN1Zuo1W1AAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"460ee7456ad2dfa0412de1c37c63bac0aeecf37192fc8a0e5a998dc45bcbac89","last_reissued_at":"2026-05-18T04:29:54.841640Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:54.841640Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Evidence for an axion-like particle from blazar spectra?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"Alessandro de Angelis, Giorgio Galanti, Marco Roncadelli, Massimo Persic","submitted_at":"2011-02-06T17:29:55Z","abstract_excerpt":"Observations with the Imaging Atmospheric Cherenkov Telescopes H.E.S.S., MAGIC, CANGAROO III and VERITAS have shown that the Universe is more transparent than expected to gamma rays above 100GeV. As a natural explanation, the DARMA scenario has previously been proposed, wherein photons can oscillate into a new very light axionlike particle and vice-versa in the presence of cosmic magnetic fields. Here we demonstrate that the most recent observations further support the DARMA scenario, thereby making the existence of a very light axion-like particle more likely."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.1177","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1102.1177","created_at":"2026-05-18T04:29:54.841714+00:00"},{"alias_kind":"arxiv_version","alias_value":"1102.1177v1","created_at":"2026-05-18T04:29:54.841714+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.1177","created_at":"2026-05-18T04:29:54.841714+00:00"},{"alias_kind":"pith_short_12","alias_value":"IYHOORLK2LP2","created_at":"2026-05-18T12:26:32.869790+00:00"},{"alias_kind":"pith_short_16","alias_value":"IYHOORLK2LP2AQJN","created_at":"2026-05-18T12:26:32.869790+00:00"},{"alias_kind":"pith_short_8","alias_value":"IYHOORLK","created_at":"2026-05-18T12:26:32.869790+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/IYHOORLK2LP2AQJN4HBXYY52YC","json":"https://pith.science/pith/IYHOORLK2LP2AQJN4HBXYY52YC.json","graph_json":"https://pith.science/api/pith-number/IYHOORLK2LP2AQJN4HBXYY52YC/graph.json","events_json":"https://pith.science/api/pith-number/IYHOORLK2LP2AQJN4HBXYY52YC/events.json","paper":"https://pith.science/paper/IYHOORLK"},"agent_actions":{"view_html":"https://pith.science/pith/IYHOORLK2LP2AQJN4HBXYY52YC","download_json":"https://pith.science/pith/IYHOORLK2LP2AQJN4HBXYY52YC.json","view_paper":"https://pith.science/paper/IYHOORLK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1102.1177&json=true","fetch_graph":"https://pith.science/api/pith-number/IYHOORLK2LP2AQJN4HBXYY52YC/graph.json","fetch_events":"https://pith.science/api/pith-number/IYHOORLK2LP2AQJN4HBXYY52YC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IYHOORLK2LP2AQJN4HBXYY52YC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IYHOORLK2LP2AQJN4HBXYY52YC/action/storage_attestation","attest_author":"https://pith.science/pith/IYHOORLK2LP2AQJN4HBXYY52YC/action/author_attestation","sign_citation":"https://pith.science/pith/IYHOORLK2LP2AQJN4HBXYY52YC/action/citation_signature","submit_replication":"https://pith.science/pith/IYHOORLK2LP2AQJN4HBXYY52YC/action/replication_record"}},"created_at":"2026-05-18T04:29:54.841714+00:00","updated_at":"2026-05-18T04:29:54.841714+00:00"}