{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:JATTGDAZSJFK7AHVWEU6QWA42F","short_pith_number":"pith:JATTGDAZ","schema_version":"1.0","canonical_sha256":"4827330c19924aaf80f5b129e8581cd16159ead6d6b891a7f17052e2c7cc28ed","source":{"kind":"arxiv","id":"1810.09058","version":2},"attestation_state":"computed","paper":{"title":"Wave asymptotics and their application to astrophysical plasma lensing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Gianfranco Grillo, James Cordes","submitted_at":"2018-10-22T02:04:05Z","abstract_excerpt":"Plasma lensing events can have significant observational consequences, including flux density modulations and perturbations in pulse arrival times. In this paper we develop and apply a formalism that extends geometrical optics to describe the effects of two dimensional plasma lenses of arbitrary shape. We apply insights from catastrophe theory and the study of uniform asymptotic expansions of integrals to describe the lensing amplification close to fold caustics and in shadow regions, and explore the effects of image appearance and disappearance at caustics in the time of arrival (TOA) perturb"},"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":"1810.09058","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-10-22T02:04:05Z","cross_cats_sorted":[],"title_canon_sha256":"5b32766f60c8b72598cca2bea58df7f1c78d01e83f35b5664d6b4e1e7dcd6c92","abstract_canon_sha256":"402f1466f86f39249287c6482f05ef0fab5849c1cdace5faf3889e9f0273a28a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:02:08.805438Z","signature_b64":"2tSX3nE/GMxSaENy9XKOBBJZye5tjGnoDS02VkZ+ZdVSUh+WmqBzMkyqpXYjUamDp+JdsZgGlelEfad9jygzAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4827330c19924aaf80f5b129e8581cd16159ead6d6b891a7f17052e2c7cc28ed","last_reissued_at":"2026-05-18T00:02:08.804720Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:02:08.804720Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Wave asymptotics and their application to astrophysical plasma lensing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Gianfranco Grillo, James Cordes","submitted_at":"2018-10-22T02:04:05Z","abstract_excerpt":"Plasma lensing events can have significant observational consequences, including flux density modulations and perturbations in pulse arrival times. In this paper we develop and apply a formalism that extends geometrical optics to describe the effects of two dimensional plasma lenses of arbitrary shape. We apply insights from catastrophe theory and the study of uniform asymptotic expansions of integrals to describe the lensing amplification close to fold caustics and in shadow regions, and explore the effects of image appearance and disappearance at caustics in the time of arrival (TOA) perturb"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.09058","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1810.09058","created_at":"2026-05-18T00:02:08.804840+00:00"},{"alias_kind":"arxiv_version","alias_value":"1810.09058v2","created_at":"2026-05-18T00:02:08.804840+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.09058","created_at":"2026-05-18T00:02:08.804840+00:00"},{"alias_kind":"pith_short_12","alias_value":"JATTGDAZSJFK","created_at":"2026-05-18T12:32:31.084164+00:00"},{"alias_kind":"pith_short_16","alias_value":"JATTGDAZSJFK7AHV","created_at":"2026-05-18T12:32:31.084164+00:00"},{"alias_kind":"pith_short_8","alias_value":"JATTGDAZ","created_at":"2026-05-18T12:32:31.084164+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2407.04097","citing_title":"Simulating FRB Morphologies and Coherent Phase Correlation Signatures from Multi-Plane Astrophysical Lensing","ref_index":20,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JATTGDAZSJFK7AHVWEU6QWA42F","json":"https://pith.science/pith/JATTGDAZSJFK7AHVWEU6QWA42F.json","graph_json":"https://pith.science/api/pith-number/JATTGDAZSJFK7AHVWEU6QWA42F/graph.json","events_json":"https://pith.science/api/pith-number/JATTGDAZSJFK7AHVWEU6QWA42F/events.json","paper":"https://pith.science/paper/JATTGDAZ"},"agent_actions":{"view_html":"https://pith.science/pith/JATTGDAZSJFK7AHVWEU6QWA42F","download_json":"https://pith.science/pith/JATTGDAZSJFK7AHVWEU6QWA42F.json","view_paper":"https://pith.science/paper/JATTGDAZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1810.09058&json=true","fetch_graph":"https://pith.science/api/pith-number/JATTGDAZSJFK7AHVWEU6QWA42F/graph.json","fetch_events":"https://pith.science/api/pith-number/JATTGDAZSJFK7AHVWEU6QWA42F/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JATTGDAZSJFK7AHVWEU6QWA42F/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JATTGDAZSJFK7AHVWEU6QWA42F/action/storage_attestation","attest_author":"https://pith.science/pith/JATTGDAZSJFK7AHVWEU6QWA42F/action/author_attestation","sign_citation":"https://pith.science/pith/JATTGDAZSJFK7AHVWEU6QWA42F/action/citation_signature","submit_replication":"https://pith.science/pith/JATTGDAZSJFK7AHVWEU6QWA42F/action/replication_record"}},"created_at":"2026-05-18T00:02:08.804840+00:00","updated_at":"2026-05-18T00:02:08.804840+00:00"}