{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:TEDXFFH2QQTWZDNP6YEAEFUO3F","short_pith_number":"pith:TEDXFFH2","schema_version":"1.0","canonical_sha256":"99077294fa84276c8daff60802168ed95e1e7c513edfd97befa510210e4c9688","source":{"kind":"arxiv","id":"0910.3610","version":1},"attestation_state":"computed","paper":{"title":"High Resolution X-ray Imaging of Supernova Remnant 1987A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"B. M. Gaensler, C.-Y. Ng, D. N. Burrows, L. Staveley-Smith, P. O. Slane, R. N. Manchester, S. Park, S. S. Murray","submitted_at":"2009-10-19T19:53:33Z","abstract_excerpt":"We report observations of the remnant of Supernova 1987A with the High Resolution Camera (HRC) onboard the Chandra X-ray Observatory. A direct image from the HRC resolves the annular structure of the X-ray remnant, confirming the morphology previously inferred by deconvolution of lower resolution data from the Advanced CCD Imaging Spectrometer. Detailed spatial modeling shows that the a thin ring plus a thin shell gives statistically the best description of the overall remnant structure, and suggests an outer radius 0.96\" +/- 0.05\" +/- 0.03\" for the X-ray-emitting region, with the two uncertai"},"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":"0910.3610","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-19T19:53:33Z","cross_cats_sorted":[],"title_canon_sha256":"fd6a1c8f6360624e5c4092882ecce3a9cf7d601e659436b08ea46a9d5ca8f172","abstract_canon_sha256":"1809639e1c9701e628ae086d14ad4eacb906a5d09d356a3149691f623bfb19ea"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:18.304683Z","signature_b64":"GWD514gMPB7exar20LjvkWf64x/xWxIvqvnFoiWUzNXB/tb3V0QuhuG7YLsiFDDICsoPRoWAR9OYsCMaD3WUBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"99077294fa84276c8daff60802168ed95e1e7c513edfd97befa510210e4c9688","last_reissued_at":"2026-05-18T02:34:18.304224Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:18.304224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"High Resolution X-ray Imaging of Supernova Remnant 1987A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"B. M. Gaensler, C.-Y. Ng, D. N. Burrows, L. Staveley-Smith, P. O. Slane, R. N. Manchester, S. Park, S. S. Murray","submitted_at":"2009-10-19T19:53:33Z","abstract_excerpt":"We report observations of the remnant of Supernova 1987A with the High Resolution Camera (HRC) onboard the Chandra X-ray Observatory. A direct image from the HRC resolves the annular structure of the X-ray remnant, confirming the morphology previously inferred by deconvolution of lower resolution data from the Advanced CCD Imaging Spectrometer. Detailed spatial modeling shows that the a thin ring plus a thin shell gives statistically the best description of the overall remnant structure, and suggests an outer radius 0.96\" +/- 0.05\" +/- 0.03\" for the X-ray-emitting region, with the two uncertai"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.3610","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":"0910.3610","created_at":"2026-05-18T02:34:18.304284+00:00"},{"alias_kind":"arxiv_version","alias_value":"0910.3610v1","created_at":"2026-05-18T02:34:18.304284+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.3610","created_at":"2026-05-18T02:34:18.304284+00:00"},{"alias_kind":"pith_short_12","alias_value":"TEDXFFH2QQTW","created_at":"2026-05-18T12:26:01.383474+00:00"},{"alias_kind":"pith_short_16","alias_value":"TEDXFFH2QQTWZDNP","created_at":"2026-05-18T12:26:01.383474+00:00"},{"alias_kind":"pith_short_8","alias_value":"TEDXFFH2","created_at":"2026-05-18T12:26:01.383474+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/TEDXFFH2QQTWZDNP6YEAEFUO3F","json":"https://pith.science/pith/TEDXFFH2QQTWZDNP6YEAEFUO3F.json","graph_json":"https://pith.science/api/pith-number/TEDXFFH2QQTWZDNP6YEAEFUO3F/graph.json","events_json":"https://pith.science/api/pith-number/TEDXFFH2QQTWZDNP6YEAEFUO3F/events.json","paper":"https://pith.science/paper/TEDXFFH2"},"agent_actions":{"view_html":"https://pith.science/pith/TEDXFFH2QQTWZDNP6YEAEFUO3F","download_json":"https://pith.science/pith/TEDXFFH2QQTWZDNP6YEAEFUO3F.json","view_paper":"https://pith.science/paper/TEDXFFH2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0910.3610&json=true","fetch_graph":"https://pith.science/api/pith-number/TEDXFFH2QQTWZDNP6YEAEFUO3F/graph.json","fetch_events":"https://pith.science/api/pith-number/TEDXFFH2QQTWZDNP6YEAEFUO3F/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TEDXFFH2QQTWZDNP6YEAEFUO3F/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TEDXFFH2QQTWZDNP6YEAEFUO3F/action/storage_attestation","attest_author":"https://pith.science/pith/TEDXFFH2QQTWZDNP6YEAEFUO3F/action/author_attestation","sign_citation":"https://pith.science/pith/TEDXFFH2QQTWZDNP6YEAEFUO3F/action/citation_signature","submit_replication":"https://pith.science/pith/TEDXFFH2QQTWZDNP6YEAEFUO3F/action/replication_record"}},"created_at":"2026-05-18T02:34:18.304284+00:00","updated_at":"2026-05-18T02:34:18.304284+00:00"}