{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:DVNC6I4U43LJYKJNBNEEWOIHMS","short_pith_number":"pith:DVNC6I4U","schema_version":"1.0","canonical_sha256":"1d5a2f2394e6d69c292d0b484b3907648c76579d64af3b4c5ae3ee359a126de5","source":{"kind":"arxiv","id":"1810.12008","version":2},"attestation_state":"computed","paper":{"title":"Is there a polarization horizon?","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. S. Hill","submitted_at":"2018-10-29T09:09:31Z","abstract_excerpt":"Modern radio spectrometers make measurement of polarized intensity as a function of Faraday depth possible. I investigate the effect of depolarization along a model line of sight. I model sightlines with two components informed by observations: a diffuse interstellar medium with a lognormal electron density distribution and a narrow, denser component simulating a spiral arm or H~{\\sc ii} region, all with synchrotron-emitting gas mixed in. I then calculate the polarized intensity from 300-1800~MHz and calculate the resulting Faraday depth spectrum. The idealized synthetic observations show far "},"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":"1810.12008","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-10-29T09:09:31Z","cross_cats_sorted":[],"title_canon_sha256":"6e968146c1a103e937dd1ede0d8461101c5eef26def0ed644c417e7152b9950a","abstract_canon_sha256":"fd9943baae025bb85b4f0477dcf84fce75fa7de5b9b888dae418b6a0ea579338"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:27.699724Z","signature_b64":"GZOlYow0UCAxuSQduulFa1tuBz3fvRYGfzZz0ExQV3tmhMSRes3IP0c7T3EjZe9YMBQmXR9OVKysWgKcwyhjCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1d5a2f2394e6d69c292d0b484b3907648c76579d64af3b4c5ae3ee359a126de5","last_reissued_at":"2026-05-17T23:59:27.699311Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:27.699311Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Is there a polarization horizon?","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. S. Hill","submitted_at":"2018-10-29T09:09:31Z","abstract_excerpt":"Modern radio spectrometers make measurement of polarized intensity as a function of Faraday depth possible. I investigate the effect of depolarization along a model line of sight. I model sightlines with two components informed by observations: a diffuse interstellar medium with a lognormal electron density distribution and a narrow, denser component simulating a spiral arm or H~{\\sc ii} region, all with synchrotron-emitting gas mixed in. I then calculate the polarized intensity from 300-1800~MHz and calculate the resulting Faraday depth spectrum. The idealized synthetic observations show far "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.12008","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":"1810.12008","created_at":"2026-05-17T23:59:27.699380+00:00"},{"alias_kind":"arxiv_version","alias_value":"1810.12008v2","created_at":"2026-05-17T23:59:27.699380+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.12008","created_at":"2026-05-17T23:59:27.699380+00:00"},{"alias_kind":"pith_short_12","alias_value":"DVNC6I4U43LJ","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_16","alias_value":"DVNC6I4U43LJYKJN","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_8","alias_value":"DVNC6I4U","created_at":"2026-05-18T12:32:19.392346+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/DVNC6I4U43LJYKJNBNEEWOIHMS","json":"https://pith.science/pith/DVNC6I4U43LJYKJNBNEEWOIHMS.json","graph_json":"https://pith.science/api/pith-number/DVNC6I4U43LJYKJNBNEEWOIHMS/graph.json","events_json":"https://pith.science/api/pith-number/DVNC6I4U43LJYKJNBNEEWOIHMS/events.json","paper":"https://pith.science/paper/DVNC6I4U"},"agent_actions":{"view_html":"https://pith.science/pith/DVNC6I4U43LJYKJNBNEEWOIHMS","download_json":"https://pith.science/pith/DVNC6I4U43LJYKJNBNEEWOIHMS.json","view_paper":"https://pith.science/paper/DVNC6I4U","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1810.12008&json=true","fetch_graph":"https://pith.science/api/pith-number/DVNC6I4U43LJYKJNBNEEWOIHMS/graph.json","fetch_events":"https://pith.science/api/pith-number/DVNC6I4U43LJYKJNBNEEWOIHMS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DVNC6I4U43LJYKJNBNEEWOIHMS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DVNC6I4U43LJYKJNBNEEWOIHMS/action/storage_attestation","attest_author":"https://pith.science/pith/DVNC6I4U43LJYKJNBNEEWOIHMS/action/author_attestation","sign_citation":"https://pith.science/pith/DVNC6I4U43LJYKJNBNEEWOIHMS/action/citation_signature","submit_replication":"https://pith.science/pith/DVNC6I4U43LJYKJNBNEEWOIHMS/action/replication_record"}},"created_at":"2026-05-17T23:59:27.699380+00:00","updated_at":"2026-05-17T23:59:27.699380+00:00"}