{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:YSL4BAIHJQE4F2ADSCMQZ6NT4K","short_pith_number":"pith:YSL4BAIH","schema_version":"1.0","canonical_sha256":"c497c081074c09c2e80390990cf9b3e2bbfc91ec3caddc8c513512bfa93ddcaf","source":{"kind":"arxiv","id":"1203.6629","version":1},"attestation_state":"computed","paper":{"title":"Swift X-Ray Upper Limits on Type Ia Supernova Environments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Brock R. Russell, Stefan Immler","submitted_at":"2012-03-29T19:09:16Z","abstract_excerpt":"We have considered 53 Type Ia supernovae (SNe Ia) observed by the Swift X-Ray Telescope (XRT). None of the SNe Ia are individually detected at any time or in stacked images. Using these data and assuming that the SNe Ia are a homogeneous class of objects, we have calculated upper limits to the X- ray luminosity (0.2 - 10 keV) and mass-loss rate of L0.2-10 < 1.7\\times1038 erg s-1 and M \\cdot < 1.1\\times10-6 M\\odot yr-1 \\times(vw)/(10 km s-1), respectively. The results exclude massive or evolved stars as the companion objects in SNe Ia progenitor systems, but allow the possibility of main sequen"},"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":"1203.6629","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-03-29T19:09:16Z","cross_cats_sorted":[],"title_canon_sha256":"ec5b7647d9443ca7c3224f3e3b39996dc12e955c5d2459af2688246eb710c2a4","abstract_canon_sha256":"1b70ad2f0739f8775ad04a39f7e1af11317575f27de08497b2f77e4d992854ed"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:59:02.017506Z","signature_b64":"UuJZRPbSfkwQEjq0pF+Tbbvg/bBkDKQVjqTdlTf+A5j7LFVAa8/8PqtcMurKYQ6EiWkqVJjWeGv5m3V/jrG5BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c497c081074c09c2e80390990cf9b3e2bbfc91ec3caddc8c513512bfa93ddcaf","last_reissued_at":"2026-05-18T03:59:02.016774Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:59:02.016774Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Swift X-Ray Upper Limits on Type Ia Supernova Environments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Brock R. Russell, Stefan Immler","submitted_at":"2012-03-29T19:09:16Z","abstract_excerpt":"We have considered 53 Type Ia supernovae (SNe Ia) observed by the Swift X-Ray Telescope (XRT). None of the SNe Ia are individually detected at any time or in stacked images. Using these data and assuming that the SNe Ia are a homogeneous class of objects, we have calculated upper limits to the X- ray luminosity (0.2 - 10 keV) and mass-loss rate of L0.2-10 < 1.7\\times1038 erg s-1 and M \\cdot < 1.1\\times10-6 M\\odot yr-1 \\times(vw)/(10 km s-1), respectively. The results exclude massive or evolved stars as the companion objects in SNe Ia progenitor systems, but allow the possibility of main sequen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.6629","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":"1203.6629","created_at":"2026-05-18T03:59:02.016886+00:00"},{"alias_kind":"arxiv_version","alias_value":"1203.6629v1","created_at":"2026-05-18T03:59:02.016886+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.6629","created_at":"2026-05-18T03:59:02.016886+00:00"},{"alias_kind":"pith_short_12","alias_value":"YSL4BAIHJQE4","created_at":"2026-05-18T12:27:30.460161+00:00"},{"alias_kind":"pith_short_16","alias_value":"YSL4BAIHJQE4F2AD","created_at":"2026-05-18T12:27:30.460161+00:00"},{"alias_kind":"pith_short_8","alias_value":"YSL4BAIH","created_at":"2026-05-18T12:27:30.460161+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/YSL4BAIHJQE4F2ADSCMQZ6NT4K","json":"https://pith.science/pith/YSL4BAIHJQE4F2ADSCMQZ6NT4K.json","graph_json":"https://pith.science/api/pith-number/YSL4BAIHJQE4F2ADSCMQZ6NT4K/graph.json","events_json":"https://pith.science/api/pith-number/YSL4BAIHJQE4F2ADSCMQZ6NT4K/events.json","paper":"https://pith.science/paper/YSL4BAIH"},"agent_actions":{"view_html":"https://pith.science/pith/YSL4BAIHJQE4F2ADSCMQZ6NT4K","download_json":"https://pith.science/pith/YSL4BAIHJQE4F2ADSCMQZ6NT4K.json","view_paper":"https://pith.science/paper/YSL4BAIH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1203.6629&json=true","fetch_graph":"https://pith.science/api/pith-number/YSL4BAIHJQE4F2ADSCMQZ6NT4K/graph.json","fetch_events":"https://pith.science/api/pith-number/YSL4BAIHJQE4F2ADSCMQZ6NT4K/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YSL4BAIHJQE4F2ADSCMQZ6NT4K/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YSL4BAIHJQE4F2ADSCMQZ6NT4K/action/storage_attestation","attest_author":"https://pith.science/pith/YSL4BAIHJQE4F2ADSCMQZ6NT4K/action/author_attestation","sign_citation":"https://pith.science/pith/YSL4BAIHJQE4F2ADSCMQZ6NT4K/action/citation_signature","submit_replication":"https://pith.science/pith/YSL4BAIHJQE4F2ADSCMQZ6NT4K/action/replication_record"}},"created_at":"2026-05-18T03:59:02.016886+00:00","updated_at":"2026-05-18T03:59:02.016886+00:00"}