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Motivated by the advent of sensitive new or planned X-ray telescopes such as the Nuclear Spectroscopic Telescope Array (NuSTAR) and the Large Observatory for X-ray Timing (LOFT), we revisit the prospects for the detection of X-ray decay lines from r-process nuclei in young or nearby supernova remnants"},"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":"1310.2950","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-10T20:02:24Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"59198412b2cb556cc68d53d7144a94c26ea2de6029f4d87bfa3370730f7ed968","abstract_canon_sha256":"53ef79b45336cb5538eab2eea2b5bf7e96a7019b0db1cbcc59edb4d77df9a536"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:06.771743Z","signature_b64":"godxxb7xVGHhDlWABhBRQlpP6fsrMNSRIsaGnJWb8KrVein7Tm3jtMeIkStbK+DbX8ybB6KQIkcJRZ6T+AuMDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"261331943477bd53fbd06127ef6a40ae2e9012614de7b3e8e22bab38cb99a2e1","last_reissued_at":"2026-05-18T01:47:06.771225Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:06.771225Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"X-ray Decay Lines from Heavy Nuclei in Supernova Remnants as a Probe of the r-Process Origin and the Birth Periods of Magnetars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Almudena Arcones, Brian D. 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