{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:66LZJCOHHJAWMWYTL3IPELIME4","short_pith_number":"pith:66LZJCOH","schema_version":"1.0","canonical_sha256":"f7979489c73a41665b135ed0f22d0c27224055293c9ccd82b8730ba501c36c6e","source":{"kind":"arxiv","id":"0809.1694","version":1},"attestation_state":"computed","paper":{"title":"Extremely Anisotropic Scintillations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Ger de Bruyn (ASTRON, Hayley Bignall (Curtin Uni), Kapteyn), Mark Walker (Manly Astrophysics)","submitted_at":"2008-09-10T00:28:36Z","abstract_excerpt":"A small number of quasars exhibit interstellar scintillation on time-scales less than an hour; their scintillation patterns are all known to be anisotropic. Here we consider a totally anisotropic model in which the scintillation pattern is effectively one-dimensional. For the persistent rapid scintillators J1819+3845 and PKS1257-326 we show that this model offers a good description of the two-station time-delay measurements and the annual cycle in the scintillation time-scale. Generalising the model to finite anisotropy yields a better match to the data but the improvement is not significant a"},"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":"0809.1694","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-10T00:28:36Z","cross_cats_sorted":[],"title_canon_sha256":"d46263d84738d588b078f8003a9a0ea45cac3547de659ff3ab1119956f915909","abstract_canon_sha256":"f059ef7a7b297a1e325aba3ebdf8bd2e17255c70f0944294bbd71bc2c41bfe8b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:15:35.054144Z","signature_b64":"GFI1e7pXgCzFlKxQ+KB0gEro7tDG3U+Ls+Fc5EQfH9pi0urn3hDDMFc4S96rbbxPzfJ0yK/3sGWZcrp6ynCkCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7979489c73a41665b135ed0f22d0c27224055293c9ccd82b8730ba501c36c6e","last_reissued_at":"2026-05-18T02:15:35.053719Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:15:35.053719Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Extremely Anisotropic Scintillations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Ger de Bruyn (ASTRON, Hayley Bignall (Curtin Uni), Kapteyn), Mark Walker (Manly Astrophysics)","submitted_at":"2008-09-10T00:28:36Z","abstract_excerpt":"A small number of quasars exhibit interstellar scintillation on time-scales less than an hour; their scintillation patterns are all known to be anisotropic. Here we consider a totally anisotropic model in which the scintillation pattern is effectively one-dimensional. For the persistent rapid scintillators J1819+3845 and PKS1257-326 we show that this model offers a good description of the two-station time-delay measurements and the annual cycle in the scintillation time-scale. Generalising the model to finite anisotropy yields a better match to the data but the improvement is not significant a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0809.1694","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":"0809.1694","created_at":"2026-05-18T02:15:35.053781+00:00"},{"alias_kind":"arxiv_version","alias_value":"0809.1694v1","created_at":"2026-05-18T02:15:35.053781+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0809.1694","created_at":"2026-05-18T02:15:35.053781+00:00"},{"alias_kind":"pith_short_12","alias_value":"66LZJCOHHJAW","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_16","alias_value":"66LZJCOHHJAWMWYT","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_8","alias_value":"66LZJCOH","created_at":"2026-05-18T12:25:56.245647+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/66LZJCOHHJAWMWYTL3IPELIME4","json":"https://pith.science/pith/66LZJCOHHJAWMWYTL3IPELIME4.json","graph_json":"https://pith.science/api/pith-number/66LZJCOHHJAWMWYTL3IPELIME4/graph.json","events_json":"https://pith.science/api/pith-number/66LZJCOHHJAWMWYTL3IPELIME4/events.json","paper":"https://pith.science/paper/66LZJCOH"},"agent_actions":{"view_html":"https://pith.science/pith/66LZJCOHHJAWMWYTL3IPELIME4","download_json":"https://pith.science/pith/66LZJCOHHJAWMWYTL3IPELIME4.json","view_paper":"https://pith.science/paper/66LZJCOH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0809.1694&json=true","fetch_graph":"https://pith.science/api/pith-number/66LZJCOHHJAWMWYTL3IPELIME4/graph.json","fetch_events":"https://pith.science/api/pith-number/66LZJCOHHJAWMWYTL3IPELIME4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/66LZJCOHHJAWMWYTL3IPELIME4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/66LZJCOHHJAWMWYTL3IPELIME4/action/storage_attestation","attest_author":"https://pith.science/pith/66LZJCOHHJAWMWYTL3IPELIME4/action/author_attestation","sign_citation":"https://pith.science/pith/66LZJCOHHJAWMWYTL3IPELIME4/action/citation_signature","submit_replication":"https://pith.science/pith/66LZJCOHHJAWMWYTL3IPELIME4/action/replication_record"}},"created_at":"2026-05-18T02:15:35.053781+00:00","updated_at":"2026-05-18T02:15:35.053781+00:00"}