{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:ZZRU4SAPPE6PTTZGKYTDMI6PT7","short_pith_number":"pith:ZZRU4SAP","schema_version":"1.0","canonical_sha256":"ce634e480f793cf9cf2656263623cf9fcf08b77c93baab92ad6155c69aeb8929","source":{"kind":"arxiv","id":"1812.06108","version":1},"attestation_state":"computed","paper":{"title":"Multitude of iron lines including a Compton scattered component in OAO 1657--415 detected with Chandra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Biswajit Paul, Gayathri Raman, Pragati Pradhan","submitted_at":"2018-12-14T19:01:06Z","abstract_excerpt":"We present a high resolution X-ray spectrum of the accreting X-ray pulsar, OAO 1657--415 with HETG+ACIS-S onboard \\emph{Chandra},revealing the presence of a broad line component around $\\sim$ 6.3 keV associated with the neutral iron K$_\\alpha$ line at 6.4 \\rm{keV}. This is interpreted as Compton shoulder arising from the Compton scattering of the 6.4 \\rm{keV} fluorescence photons making OAO 1657--415 the second accreting neutron star where such a feature is detected. A Compton shoulder reveals the presence of dense matter surrounding the X-ray source. We did not detect any periodicity in the l"},"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":"1812.06108","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-12-14T19:01:06Z","cross_cats_sorted":[],"title_canon_sha256":"7763b29ef1ae8976ddb9b7b14a6f5f7074e177114e56427a063691deeea71226","abstract_canon_sha256":"98542e3916c11a7d39cbf70766c5752a60ff9a7efb02c810cfef85a131e2e4c4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:53.413412Z","signature_b64":"ShL/uPOMdexRSOYpbm/XE/SJUBZdOka9WDCenQa1E4CYVMlqBF3e7yShU24uEANEfLqYul8qLWguHNj+/bGkAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce634e480f793cf9cf2656263623cf9fcf08b77c93baab92ad6155c69aeb8929","last_reissued_at":"2026-05-17T23:55:53.412800Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:53.412800Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Multitude of iron lines including a Compton scattered component in OAO 1657--415 detected with Chandra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Biswajit Paul, Gayathri Raman, Pragati Pradhan","submitted_at":"2018-12-14T19:01:06Z","abstract_excerpt":"We present a high resolution X-ray spectrum of the accreting X-ray pulsar, OAO 1657--415 with HETG+ACIS-S onboard \\emph{Chandra},revealing the presence of a broad line component around $\\sim$ 6.3 keV associated with the neutral iron K$_\\alpha$ line at 6.4 \\rm{keV}. This is interpreted as Compton shoulder arising from the Compton scattering of the 6.4 \\rm{keV} fluorescence photons making OAO 1657--415 the second accreting neutron star where such a feature is detected. A Compton shoulder reveals the presence of dense matter surrounding the X-ray source. We did not detect any periodicity in the l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.06108","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":"1812.06108","created_at":"2026-05-17T23:55:53.412889+00:00"},{"alias_kind":"arxiv_version","alias_value":"1812.06108v1","created_at":"2026-05-17T23:55:53.412889+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.06108","created_at":"2026-05-17T23:55:53.412889+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZZRU4SAPPE6P","created_at":"2026-05-18T12:33:07.085635+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZZRU4SAPPE6PTTZG","created_at":"2026-05-18T12:33:07.085635+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZZRU4SAP","created_at":"2026-05-18T12:33:07.085635+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/ZZRU4SAPPE6PTTZGKYTDMI6PT7","json":"https://pith.science/pith/ZZRU4SAPPE6PTTZGKYTDMI6PT7.json","graph_json":"https://pith.science/api/pith-number/ZZRU4SAPPE6PTTZGKYTDMI6PT7/graph.json","events_json":"https://pith.science/api/pith-number/ZZRU4SAPPE6PTTZGKYTDMI6PT7/events.json","paper":"https://pith.science/paper/ZZRU4SAP"},"agent_actions":{"view_html":"https://pith.science/pith/ZZRU4SAPPE6PTTZGKYTDMI6PT7","download_json":"https://pith.science/pith/ZZRU4SAPPE6PTTZGKYTDMI6PT7.json","view_paper":"https://pith.science/paper/ZZRU4SAP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1812.06108&json=true","fetch_graph":"https://pith.science/api/pith-number/ZZRU4SAPPE6PTTZGKYTDMI6PT7/graph.json","fetch_events":"https://pith.science/api/pith-number/ZZRU4SAPPE6PTTZGKYTDMI6PT7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZZRU4SAPPE6PTTZGKYTDMI6PT7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZZRU4SAPPE6PTTZGKYTDMI6PT7/action/storage_attestation","attest_author":"https://pith.science/pith/ZZRU4SAPPE6PTTZGKYTDMI6PT7/action/author_attestation","sign_citation":"https://pith.science/pith/ZZRU4SAPPE6PTTZGKYTDMI6PT7/action/citation_signature","submit_replication":"https://pith.science/pith/ZZRU4SAPPE6PTTZGKYTDMI6PT7/action/replication_record"}},"created_at":"2026-05-17T23:55:53.412889+00:00","updated_at":"2026-05-17T23:55:53.412889+00:00"}