{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:5GRW5Y4K2EMVKXTXAEMG7IBZWQ","short_pith_number":"pith:5GRW5Y4K","schema_version":"1.0","canonical_sha256":"e9a36ee38ad119555e7701186fa039b4082da8b7ad4037bc9eb6bb54156ea61e","source":{"kind":"arxiv","id":"1808.04989","version":1},"attestation_state":"computed","paper":{"title":"Densities Probed by Coronal Type III Radio Burst Imaging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Iver H. Cairns, John Morgan, Patrick I. McCauley","submitted_at":"2018-08-15T07:31:48Z","abstract_excerpt":"We present coronal density profiles derived from low-frequency (80-240 MHz) imaging of three type III solar radio bursts observed at the limb by the Murchison Widefield Array (MWA). Each event is associated with a white light streamer at larger heights and is plausibly associated with thin extreme ultraviolet rays at lower heights. Assuming harmonic plasma emission, we find average electron densities of 1.8 x10^8 cm^-3 down to 0.20 x10^8 cm^-3 at heights of 1.3 to 1.9 solar radii. These values represent roughly 2.4-5.4x enhancements over canonical background levels and are comparable to the hi"},"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":"1808.04989","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-08-15T07:31:48Z","cross_cats_sorted":[],"title_canon_sha256":"d51a944a9df193efa62e28546af5d83a683bab76889a11f825ff4918fe1c10a6","abstract_canon_sha256":"2fc109b611b4d06a5fdd904bae813fa4631b5718fb88dbd952cc4b2fb6f8c461"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:15.374853Z","signature_b64":"4E3F8k6Ss4HfpXb/CPwwWBm6tW0rujRo8ixhtoN7OdjDgJKVWvMq1ilG6/dohetwfqk77xWM5WIFG8WmsFYsBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e9a36ee38ad119555e7701186fa039b4082da8b7ad4037bc9eb6bb54156ea61e","last_reissued_at":"2026-05-18T00:03:15.374246Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:15.374246Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Densities Probed by Coronal Type III Radio Burst Imaging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Iver H. Cairns, John Morgan, Patrick I. McCauley","submitted_at":"2018-08-15T07:31:48Z","abstract_excerpt":"We present coronal density profiles derived from low-frequency (80-240 MHz) imaging of three type III solar radio bursts observed at the limb by the Murchison Widefield Array (MWA). Each event is associated with a white light streamer at larger heights and is plausibly associated with thin extreme ultraviolet rays at lower heights. Assuming harmonic plasma emission, we find average electron densities of 1.8 x10^8 cm^-3 down to 0.20 x10^8 cm^-3 at heights of 1.3 to 1.9 solar radii. These values represent roughly 2.4-5.4x enhancements over canonical background levels and are comparable to the hi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.04989","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":"1808.04989","created_at":"2026-05-18T00:03:15.374363+00:00"},{"alias_kind":"arxiv_version","alias_value":"1808.04989v1","created_at":"2026-05-18T00:03:15.374363+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.04989","created_at":"2026-05-18T00:03:15.374363+00:00"},{"alias_kind":"pith_short_12","alias_value":"5GRW5Y4K2EMV","created_at":"2026-05-18T12:32:08.215937+00:00"},{"alias_kind":"pith_short_16","alias_value":"5GRW5Y4K2EMVKXTX","created_at":"2026-05-18T12:32:08.215937+00:00"},{"alias_kind":"pith_short_8","alias_value":"5GRW5Y4K","created_at":"2026-05-18T12:32:08.215937+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/5GRW5Y4K2EMVKXTXAEMG7IBZWQ","json":"https://pith.science/pith/5GRW5Y4K2EMVKXTXAEMG7IBZWQ.json","graph_json":"https://pith.science/api/pith-number/5GRW5Y4K2EMVKXTXAEMG7IBZWQ/graph.json","events_json":"https://pith.science/api/pith-number/5GRW5Y4K2EMVKXTXAEMG7IBZWQ/events.json","paper":"https://pith.science/paper/5GRW5Y4K"},"agent_actions":{"view_html":"https://pith.science/pith/5GRW5Y4K2EMVKXTXAEMG7IBZWQ","download_json":"https://pith.science/pith/5GRW5Y4K2EMVKXTXAEMG7IBZWQ.json","view_paper":"https://pith.science/paper/5GRW5Y4K","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1808.04989&json=true","fetch_graph":"https://pith.science/api/pith-number/5GRW5Y4K2EMVKXTXAEMG7IBZWQ/graph.json","fetch_events":"https://pith.science/api/pith-number/5GRW5Y4K2EMVKXTXAEMG7IBZWQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5GRW5Y4K2EMVKXTXAEMG7IBZWQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5GRW5Y4K2EMVKXTXAEMG7IBZWQ/action/storage_attestation","attest_author":"https://pith.science/pith/5GRW5Y4K2EMVKXTXAEMG7IBZWQ/action/author_attestation","sign_citation":"https://pith.science/pith/5GRW5Y4K2EMVKXTXAEMG7IBZWQ/action/citation_signature","submit_replication":"https://pith.science/pith/5GRW5Y4K2EMVKXTXAEMG7IBZWQ/action/replication_record"}},"created_at":"2026-05-18T00:03:15.374363+00:00","updated_at":"2026-05-18T00:03:15.374363+00:00"}