{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:ZPERUMEGSNUBJXIT73XFLYDEAP","short_pith_number":"pith:ZPERUMEG","schema_version":"1.0","canonical_sha256":"cbc91a3086936814dd13feee55e06403d687b478bb09c6a7b5b741ca9e924090","source":{"kind":"arxiv","id":"1007.4862","version":3},"attestation_state":"computed","paper":{"title":"No Indications of Axion-Like Particles From Fermi","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"Alexander V. Belikov, Dan Hooper, Lisa Goodenough","submitted_at":"2010-07-28T02:41:22Z","abstract_excerpt":"As very high energy (~100 GeV) gamma rays travel over cosmological distances, their flux is attenuated through interactions with the extragalactic background light. Observations of distant gamma ray sources at energies between ~200 GeV and a few TeV by ground-based gamma ray telescopes such as HESS, however, suggest that the universe is more transparent to very high energy photons than had been anticipated. One possible explanation for this is the existence of axion-like-particles (ALPs) which gamma rays can efficiently oscillate into, enabling them to travel cosmological distances without att"},"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":"1007.4862","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-07-28T02:41:22Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"fd9dfd53879bbde3bd532610687fbb0d996d520a5315782c4b1f9b40aaa35d29","abstract_canon_sha256":"c98c42207638538e5afb4dfab7751d8afdfe89c678048d548fb19d52f16b3307"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:25:28.212092Z","signature_b64":"gtLJpO0Oy+G3iWiKr4xrVyRFwOW07av+EKsLJ4z3QnnNM0PNUUMjOHAtfW25Zv63akDAr/PwkCtN2IOXpTz+Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cbc91a3086936814dd13feee55e06403d687b478bb09c6a7b5b741ca9e924090","last_reissued_at":"2026-05-18T04:25:28.211209Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:25:28.211209Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"No Indications of Axion-Like Particles From Fermi","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"Alexander V. Belikov, Dan Hooper, Lisa Goodenough","submitted_at":"2010-07-28T02:41:22Z","abstract_excerpt":"As very high energy (~100 GeV) gamma rays travel over cosmological distances, their flux is attenuated through interactions with the extragalactic background light. Observations of distant gamma ray sources at energies between ~200 GeV and a few TeV by ground-based gamma ray telescopes such as HESS, however, suggest that the universe is more transparent to very high energy photons than had been anticipated. One possible explanation for this is the existence of axion-like-particles (ALPs) which gamma rays can efficiently oscillate into, enabling them to travel cosmological distances without att"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.4862","kind":"arxiv","version":3},"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":"1007.4862","created_at":"2026-05-18T04:25:28.211373+00:00"},{"alias_kind":"arxiv_version","alias_value":"1007.4862v3","created_at":"2026-05-18T04:25:28.211373+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.4862","created_at":"2026-05-18T04:25:28.211373+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZPERUMEGSNUB","created_at":"2026-05-18T12:26:18.847500+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZPERUMEGSNUBJXIT","created_at":"2026-05-18T12:26:18.847500+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZPERUMEG","created_at":"2026-05-18T12:26:18.847500+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/ZPERUMEGSNUBJXIT73XFLYDEAP","json":"https://pith.science/pith/ZPERUMEGSNUBJXIT73XFLYDEAP.json","graph_json":"https://pith.science/api/pith-number/ZPERUMEGSNUBJXIT73XFLYDEAP/graph.json","events_json":"https://pith.science/api/pith-number/ZPERUMEGSNUBJXIT73XFLYDEAP/events.json","paper":"https://pith.science/paper/ZPERUMEG"},"agent_actions":{"view_html":"https://pith.science/pith/ZPERUMEGSNUBJXIT73XFLYDEAP","download_json":"https://pith.science/pith/ZPERUMEGSNUBJXIT73XFLYDEAP.json","view_paper":"https://pith.science/paper/ZPERUMEG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1007.4862&json=true","fetch_graph":"https://pith.science/api/pith-number/ZPERUMEGSNUBJXIT73XFLYDEAP/graph.json","fetch_events":"https://pith.science/api/pith-number/ZPERUMEGSNUBJXIT73XFLYDEAP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZPERUMEGSNUBJXIT73XFLYDEAP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZPERUMEGSNUBJXIT73XFLYDEAP/action/storage_attestation","attest_author":"https://pith.science/pith/ZPERUMEGSNUBJXIT73XFLYDEAP/action/author_attestation","sign_citation":"https://pith.science/pith/ZPERUMEGSNUBJXIT73XFLYDEAP/action/citation_signature","submit_replication":"https://pith.science/pith/ZPERUMEGSNUBJXIT73XFLYDEAP/action/replication_record"}},"created_at":"2026-05-18T04:25:28.211373+00:00","updated_at":"2026-05-18T04:25:28.211373+00:00"}