{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:CI54JO5Y3D7BZF4BIUTPF7QB2W","short_pith_number":"pith:CI54JO5Y","schema_version":"1.0","canonical_sha256":"123bc4bbb8d8fe1c97814526f2fe01d589afad5e20c7bba3bc8545814297fe0b","source":{"kind":"arxiv","id":"1208.3045","version":1},"attestation_state":"computed","paper":{"title":"Modelling the Galactic distribution of free electrons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"D. H. F. M. Schnitzeler","submitted_at":"2012-08-15T07:05:51Z","abstract_excerpt":"In this paper we test 8 models of the free electron distribution in the Milky Way that have been published previously, and we introduce 4 additional models that explore the parameter space of possible models further. These new models consist of a simple exponential thick disk model, and updated versions of the models by Taylor & Cordes and Cordes & Lazio with more extended thick disks. The final model we introduce uses the observed H-alpha intensity as a proxy for the total electron column density, also known as the dispersion measure (DM). We use the latest available data sets of pulsars with"},"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":"1208.3045","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-08-15T07:05:51Z","cross_cats_sorted":[],"title_canon_sha256":"58d738207bb8cc11584125b2055ded128873c917b64b3f11a9822eacd8e35189","abstract_canon_sha256":"4f642d9dafbf2fb9bed625aeb646d134be271ba11983e42a8a6ec2d428da36f9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:55:15.758936Z","signature_b64":"UgbIDd18iUXX8ugf6CcaMyNoXml22H6heX1t1ZS29YLPFxgnxtyRqwElLh4SvkiewnuADU2wc+t3cMGYZHmkBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"123bc4bbb8d8fe1c97814526f2fe01d589afad5e20c7bba3bc8545814297fe0b","last_reissued_at":"2026-05-18T01:55:15.758505Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:55:15.758505Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Modelling the Galactic distribution of free electrons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"D. H. F. M. Schnitzeler","submitted_at":"2012-08-15T07:05:51Z","abstract_excerpt":"In this paper we test 8 models of the free electron distribution in the Milky Way that have been published previously, and we introduce 4 additional models that explore the parameter space of possible models further. These new models consist of a simple exponential thick disk model, and updated versions of the models by Taylor & Cordes and Cordes & Lazio with more extended thick disks. The final model we introduce uses the observed H-alpha intensity as a proxy for the total electron column density, also known as the dispersion measure (DM). We use the latest available data sets of pulsars with"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.3045","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":"1208.3045","created_at":"2026-05-18T01:55:15.758585+00:00"},{"alias_kind":"arxiv_version","alias_value":"1208.3045v1","created_at":"2026-05-18T01:55:15.758585+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.3045","created_at":"2026-05-18T01:55:15.758585+00:00"},{"alias_kind":"pith_short_12","alias_value":"CI54JO5Y3D7B","created_at":"2026-05-18T12:27:01.376967+00:00"},{"alias_kind":"pith_short_16","alias_value":"CI54JO5Y3D7BZF4B","created_at":"2026-05-18T12:27:01.376967+00:00"},{"alias_kind":"pith_short_8","alias_value":"CI54JO5Y","created_at":"2026-05-18T12:27:01.376967+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/CI54JO5Y3D7BZF4BIUTPF7QB2W","json":"https://pith.science/pith/CI54JO5Y3D7BZF4BIUTPF7QB2W.json","graph_json":"https://pith.science/api/pith-number/CI54JO5Y3D7BZF4BIUTPF7QB2W/graph.json","events_json":"https://pith.science/api/pith-number/CI54JO5Y3D7BZF4BIUTPF7QB2W/events.json","paper":"https://pith.science/paper/CI54JO5Y"},"agent_actions":{"view_html":"https://pith.science/pith/CI54JO5Y3D7BZF4BIUTPF7QB2W","download_json":"https://pith.science/pith/CI54JO5Y3D7BZF4BIUTPF7QB2W.json","view_paper":"https://pith.science/paper/CI54JO5Y","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1208.3045&json=true","fetch_graph":"https://pith.science/api/pith-number/CI54JO5Y3D7BZF4BIUTPF7QB2W/graph.json","fetch_events":"https://pith.science/api/pith-number/CI54JO5Y3D7BZF4BIUTPF7QB2W/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CI54JO5Y3D7BZF4BIUTPF7QB2W/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CI54JO5Y3D7BZF4BIUTPF7QB2W/action/storage_attestation","attest_author":"https://pith.science/pith/CI54JO5Y3D7BZF4BIUTPF7QB2W/action/author_attestation","sign_citation":"https://pith.science/pith/CI54JO5Y3D7BZF4BIUTPF7QB2W/action/citation_signature","submit_replication":"https://pith.science/pith/CI54JO5Y3D7BZF4BIUTPF7QB2W/action/replication_record"}},"created_at":"2026-05-18T01:55:15.758585+00:00","updated_at":"2026-05-18T01:55:15.758585+00:00"}