{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:RDSVD3TNUI7VYPONYZI2UVIHWY","short_pith_number":"pith:RDSVD3TN","schema_version":"1.0","canonical_sha256":"88e551ee6da23f5c3dcdc651aa5507b61e03730e2b044067c71759a1c444dad0","source":{"kind":"arxiv","id":"1503.07173","version":1},"attestation_state":"computed","paper":{"title":"Old supernova dust factory revealed at the Galactic center","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Joseph D. Adams, Mark R. Morris, Ryan M. Lau, Terry L. Herter, Zhiyuan Li","submitted_at":"2015-03-24T20:00:25Z","abstract_excerpt":"Dust formation in supernova ejecta is currently the leading candidate to explain the large quantities of dust observed in the distant, early Universe. However, it is unclear whether the ejecta-formed dust can survive the hot interior of the supernova remnant (SNR). We present infrared observations of ~0.02 $M_\\odot$ of warm (~100 K) dust seen near the center of the ~10,000 yr-old Sgr A East SNR at the Galactic center. Our findings signify the detection of dust within an older SNR that is expanding into a relatively dense surrounding medium ($n_e$ ~ 100 $\\mathrm{cm}^{-3}$) and has survived the "},"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":"1503.07173","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-24T20:00:25Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"74979717f922f5aaabb2b0501ade7190175b61facd681b95616c72c3a906fc25","abstract_canon_sha256":"e6f8dfe7b18e7316d68e016475ac15ad33883c6aa325be5e7c6a7e7d5d108e13"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:20:28.129604Z","signature_b64":"jKoPPQjLaqO+ZoFa7ACqyCLxQwBgBOTRRlkPn7ubbixazuIrGefQGbVU1M4ELlaXe4F2whr9CIh3WxsLVOI7DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"88e551ee6da23f5c3dcdc651aa5507b61e03730e2b044067c71759a1c444dad0","last_reissued_at":"2026-05-18T02:20:28.129120Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:20:28.129120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Old supernova dust factory revealed at the Galactic center","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Joseph D. Adams, Mark R. Morris, Ryan M. Lau, Terry L. Herter, Zhiyuan Li","submitted_at":"2015-03-24T20:00:25Z","abstract_excerpt":"Dust formation in supernova ejecta is currently the leading candidate to explain the large quantities of dust observed in the distant, early Universe. However, it is unclear whether the ejecta-formed dust can survive the hot interior of the supernova remnant (SNR). We present infrared observations of ~0.02 $M_\\odot$ of warm (~100 K) dust seen near the center of the ~10,000 yr-old Sgr A East SNR at the Galactic center. Our findings signify the detection of dust within an older SNR that is expanding into a relatively dense surrounding medium ($n_e$ ~ 100 $\\mathrm{cm}^{-3}$) and has survived the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07173","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":"1503.07173","created_at":"2026-05-18T02:20:28.129191+00:00"},{"alias_kind":"arxiv_version","alias_value":"1503.07173v1","created_at":"2026-05-18T02:20:28.129191+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07173","created_at":"2026-05-18T02:20:28.129191+00:00"},{"alias_kind":"pith_short_12","alias_value":"RDSVD3TNUI7V","created_at":"2026-05-18T12:29:39.896362+00:00"},{"alias_kind":"pith_short_16","alias_value":"RDSVD3TNUI7VYPON","created_at":"2026-05-18T12:29:39.896362+00:00"},{"alias_kind":"pith_short_8","alias_value":"RDSVD3TN","created_at":"2026-05-18T12:29:39.896362+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/RDSVD3TNUI7VYPONYZI2UVIHWY","json":"https://pith.science/pith/RDSVD3TNUI7VYPONYZI2UVIHWY.json","graph_json":"https://pith.science/api/pith-number/RDSVD3TNUI7VYPONYZI2UVIHWY/graph.json","events_json":"https://pith.science/api/pith-number/RDSVD3TNUI7VYPONYZI2UVIHWY/events.json","paper":"https://pith.science/paper/RDSVD3TN"},"agent_actions":{"view_html":"https://pith.science/pith/RDSVD3TNUI7VYPONYZI2UVIHWY","download_json":"https://pith.science/pith/RDSVD3TNUI7VYPONYZI2UVIHWY.json","view_paper":"https://pith.science/paper/RDSVD3TN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1503.07173&json=true","fetch_graph":"https://pith.science/api/pith-number/RDSVD3TNUI7VYPONYZI2UVIHWY/graph.json","fetch_events":"https://pith.science/api/pith-number/RDSVD3TNUI7VYPONYZI2UVIHWY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RDSVD3TNUI7VYPONYZI2UVIHWY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RDSVD3TNUI7VYPONYZI2UVIHWY/action/storage_attestation","attest_author":"https://pith.science/pith/RDSVD3TNUI7VYPONYZI2UVIHWY/action/author_attestation","sign_citation":"https://pith.science/pith/RDSVD3TNUI7VYPONYZI2UVIHWY/action/citation_signature","submit_replication":"https://pith.science/pith/RDSVD3TNUI7VYPONYZI2UVIHWY/action/replication_record"}},"created_at":"2026-05-18T02:20:28.129191+00:00","updated_at":"2026-05-18T02:20:28.129191+00:00"}