{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:W6GFA2UUUTBILLCDT57K4JSPXO","short_pith_number":"pith:W6GFA2UU","schema_version":"1.0","canonical_sha256":"b78c506a94a4c285ac439f7eae264fbbadb4835711a0d5a0a6c40d5d8d0b9725","source":{"kind":"arxiv","id":"1906.02203","version":1},"attestation_state":"computed","paper":{"title":"The dust content of the Crab Nebula","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"A. Bevan, F. Priestley, H. Chawner, H.L. Gomez, I. De Looze, M.F. Bietenholz, M.J. Barlow, M. Matsuura, R. Bandiera, R. Wesson","submitted_at":"2019-06-05T18:00:01Z","abstract_excerpt":"We have modelled the near-infrared to radio images of the Crab Nebula with a Bayesian SED model to simultaneously fit its synchrotron, interstellar and supernova dust emission. We infer an interstellar dust extinction map with an average $A_{\\text{V}}$=1.08$\\pm$0.38 mag, consistent with a small contribution (<22%) to the Crab's overall infrared emission. The Crab's supernova dust mass is estimated to be between 0.032 and 0.049 M$_{\\odot}$ (for amorphous carbon grains) with an average dust temperature $T_{\\text{dust}}$=41$\\pm$3K, corresponding to a dust condensation efficiency of 8-12%. This re"},"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":"1906.02203","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-06-05T18:00:01Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"db2bb170181b5c23a99b073792d67188dc31f5ce52db67fb2c46c63c2aa28634","abstract_canon_sha256":"2bbd5953e7dd68700e4f1a464be37f7f1c36ece500cde11808a832e5a4bb7c81"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:33.978250Z","signature_b64":"PFfEYm+xheJZMtkBOlyZ4TLlOP43Ag7FDF0r6Ls7tl2AS6XVoCkfQs//HztPopwNIBaKmNYJpgC8sOVOO3R8Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b78c506a94a4c285ac439f7eae264fbbadb4835711a0d5a0a6c40d5d8d0b9725","last_reissued_at":"2026-05-17T23:43:33.977755Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:33.977755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The dust content of the Crab Nebula","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"A. Bevan, F. Priestley, H. Chawner, H.L. Gomez, I. De Looze, M.F. Bietenholz, M.J. Barlow, M. Matsuura, R. Bandiera, R. Wesson","submitted_at":"2019-06-05T18:00:01Z","abstract_excerpt":"We have modelled the near-infrared to radio images of the Crab Nebula with a Bayesian SED model to simultaneously fit its synchrotron, interstellar and supernova dust emission. We infer an interstellar dust extinction map with an average $A_{\\text{V}}$=1.08$\\pm$0.38 mag, consistent with a small contribution (<22%) to the Crab's overall infrared emission. The Crab's supernova dust mass is estimated to be between 0.032 and 0.049 M$_{\\odot}$ (for amorphous carbon grains) with an average dust temperature $T_{\\text{dust}}$=41$\\pm$3K, corresponding to a dust condensation efficiency of 8-12%. This re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.02203","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":"1906.02203","created_at":"2026-05-17T23:43:33.977829+00:00"},{"alias_kind":"arxiv_version","alias_value":"1906.02203v1","created_at":"2026-05-17T23:43:33.977829+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.02203","created_at":"2026-05-17T23:43:33.977829+00:00"},{"alias_kind":"pith_short_12","alias_value":"W6GFA2UUUTBI","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_16","alias_value":"W6GFA2UUUTBILLCD","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_8","alias_value":"W6GFA2UU","created_at":"2026-05-18T12:33:30.264802+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/W6GFA2UUUTBILLCDT57K4JSPXO","json":"https://pith.science/pith/W6GFA2UUUTBILLCDT57K4JSPXO.json","graph_json":"https://pith.science/api/pith-number/W6GFA2UUUTBILLCDT57K4JSPXO/graph.json","events_json":"https://pith.science/api/pith-number/W6GFA2UUUTBILLCDT57K4JSPXO/events.json","paper":"https://pith.science/paper/W6GFA2UU"},"agent_actions":{"view_html":"https://pith.science/pith/W6GFA2UUUTBILLCDT57K4JSPXO","download_json":"https://pith.science/pith/W6GFA2UUUTBILLCDT57K4JSPXO.json","view_paper":"https://pith.science/paper/W6GFA2UU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1906.02203&json=true","fetch_graph":"https://pith.science/api/pith-number/W6GFA2UUUTBILLCDT57K4JSPXO/graph.json","fetch_events":"https://pith.science/api/pith-number/W6GFA2UUUTBILLCDT57K4JSPXO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/W6GFA2UUUTBILLCDT57K4JSPXO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/W6GFA2UUUTBILLCDT57K4JSPXO/action/storage_attestation","attest_author":"https://pith.science/pith/W6GFA2UUUTBILLCDT57K4JSPXO/action/author_attestation","sign_citation":"https://pith.science/pith/W6GFA2UUUTBILLCDT57K4JSPXO/action/citation_signature","submit_replication":"https://pith.science/pith/W6GFA2UUUTBILLCDT57K4JSPXO/action/replication_record"}},"created_at":"2026-05-17T23:43:33.977829+00:00","updated_at":"2026-05-17T23:43:33.977829+00:00"}