{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:IB3RRIQO4HNURIDOAXLR6LL6P7","short_pith_number":"pith:IB3RRIQO","schema_version":"1.0","canonical_sha256":"407718a20ee1db48a06e05d71f2d7e7ff60f08eb071f4afab24eb7599e00ff78","source":{"kind":"arxiv","id":"1507.04619","version":1},"attestation_state":"computed","paper":{"title":"The X-Ray Line Feature At 3.5 Kev In Galaxy Cluster Spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. Sylwester, J. Sylwester, K. J. H. Phillips","submitted_at":"2015-07-16T15:22:55Z","abstract_excerpt":"Recent work by Bulbul et al. and Boyarsky et al. has suggested that a line feature at approx. 3.5 keV in the X-ray spectra of galaxy clusters and individual galaxies seen with XMM-Newton is due to the decay of sterile neutrinos, a dark matter candidate. This identification has been criticized by Jeltema and Profumo on the grounds that model spectra suggest that atomic transitions in helium-like potassium (K XVIII) and chlorine (Cl XVI) are more likely to be the emitters. Here it is pointed out that the K XVIII lines have been observed in numerous solar flare spectra at high spectral resolution"},"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":"1507.04619","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-16T15:22:55Z","cross_cats_sorted":[],"title_canon_sha256":"0e2fbff3fcdb3bac02e96576cdde4f1b4f70d5d7a7f36b41db64f737a0d05411","abstract_canon_sha256":"0e952025cd411e12cd3254afc0ba63c8b453ceca196bd33eaf25934817825175"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:06.848375Z","signature_b64":"NufCxLrGoF6LuQ3Byai7ML60hIYIH0pDhoZ6aN55AZT50Warhfo+2dJ9SL/5YvRt9MCV7TYvz7i8HFaFE+ZgDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"407718a20ee1db48a06e05d71f2d7e7ff60f08eb071f4afab24eb7599e00ff78","last_reissued_at":"2026-05-18T01:35:06.847678Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:06.847678Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The X-Ray Line Feature At 3.5 Kev In Galaxy Cluster Spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. Sylwester, J. Sylwester, K. J. H. Phillips","submitted_at":"2015-07-16T15:22:55Z","abstract_excerpt":"Recent work by Bulbul et al. and Boyarsky et al. has suggested that a line feature at approx. 3.5 keV in the X-ray spectra of galaxy clusters and individual galaxies seen with XMM-Newton is due to the decay of sterile neutrinos, a dark matter candidate. This identification has been criticized by Jeltema and Profumo on the grounds that model spectra suggest that atomic transitions in helium-like potassium (K XVIII) and chlorine (Cl XVI) are more likely to be the emitters. Here it is pointed out that the K XVIII lines have been observed in numerous solar flare spectra at high spectral resolution"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.04619","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":"1507.04619","created_at":"2026-05-18T01:35:06.847786+00:00"},{"alias_kind":"arxiv_version","alias_value":"1507.04619v1","created_at":"2026-05-18T01:35:06.847786+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.04619","created_at":"2026-05-18T01:35:06.847786+00:00"},{"alias_kind":"pith_short_12","alias_value":"IB3RRIQO4HNU","created_at":"2026-05-18T12:29:25.134429+00:00"},{"alias_kind":"pith_short_16","alias_value":"IB3RRIQO4HNURIDO","created_at":"2026-05-18T12:29:25.134429+00:00"},{"alias_kind":"pith_short_8","alias_value":"IB3RRIQO","created_at":"2026-05-18T12:29:25.134429+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/IB3RRIQO4HNURIDOAXLR6LL6P7","json":"https://pith.science/pith/IB3RRIQO4HNURIDOAXLR6LL6P7.json","graph_json":"https://pith.science/api/pith-number/IB3RRIQO4HNURIDOAXLR6LL6P7/graph.json","events_json":"https://pith.science/api/pith-number/IB3RRIQO4HNURIDOAXLR6LL6P7/events.json","paper":"https://pith.science/paper/IB3RRIQO"},"agent_actions":{"view_html":"https://pith.science/pith/IB3RRIQO4HNURIDOAXLR6LL6P7","download_json":"https://pith.science/pith/IB3RRIQO4HNURIDOAXLR6LL6P7.json","view_paper":"https://pith.science/paper/IB3RRIQO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1507.04619&json=true","fetch_graph":"https://pith.science/api/pith-number/IB3RRIQO4HNURIDOAXLR6LL6P7/graph.json","fetch_events":"https://pith.science/api/pith-number/IB3RRIQO4HNURIDOAXLR6LL6P7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IB3RRIQO4HNURIDOAXLR6LL6P7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IB3RRIQO4HNURIDOAXLR6LL6P7/action/storage_attestation","attest_author":"https://pith.science/pith/IB3RRIQO4HNURIDOAXLR6LL6P7/action/author_attestation","sign_citation":"https://pith.science/pith/IB3RRIQO4HNURIDOAXLR6LL6P7/action/citation_signature","submit_replication":"https://pith.science/pith/IB3RRIQO4HNURIDOAXLR6LL6P7/action/replication_record"}},"created_at":"2026-05-18T01:35:06.847786+00:00","updated_at":"2026-05-18T01:35:06.847786+00:00"}