{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:2ZTUISWRRBXUYC6GUJTVWUD2OL","short_pith_number":"pith:2ZTUISWR","schema_version":"1.0","canonical_sha256":"d667444ad1886f4c0bc6a2675b507a72d7d47875d3b697174053b972357050f7","source":{"kind":"arxiv","id":"1608.08978","version":1},"attestation_state":"computed","paper":{"title":"The NuSTAR X-ray Spectrum of Hercules X-1: A Radiation-Dominated Radiative Shock","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Amy M. Gottlieb, Diana M. Marcu-Cheatham, Felix F\\\"urst, Fritz-Walter Schwarm, J\\\"orn Wilms, Katja Pottschmidt, Kent S. Wood, Michael T. Wolff, Paul B. Hemphill, Peter A. Becker","submitted_at":"2016-08-31T18:22:09Z","abstract_excerpt":"We report new spectral modeling of the accreting X-ray pulsar Hercules X- 1. Our radiation-dominated radiative shock model is an implementation of the analytic work of Becker & Wolff on Comptonized accretion flows onto magnetic neutron stars. We obtain a good fit to the spin-phase averaged 4 to 78 keV X-ray spectrum observed by the Nuclear Spectroscopic Telescope Array during a main- on phase of the Her X-1 35-day accretion disk precession period. This model allows us to estimate the accretion rate, the Comptonizing temperature of the radiating plasma, the radius of the magnetic polar cap, and"},"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":"1608.08978","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-31T18:22:09Z","cross_cats_sorted":[],"title_canon_sha256":"7c55624e792f2fc6aa3d0fe3268e9fa6211baefa74599f03cbbfe43d94c5f565","abstract_canon_sha256":"581c9c7612ad2f1d943c2c24a55f7c3b293d601bd6aabb21ca35158fcd66be59"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:59:19.537677Z","signature_b64":"uFQChIO17jK8zW08ZseS+C/e5ZS0qVBmlrzSGNoDYBhkgo+9LMPMQDi1KZFM2GtKKyMVBEP3RYKvMQFRzk5EBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d667444ad1886f4c0bc6a2675b507a72d7d47875d3b697174053b972357050f7","last_reissued_at":"2026-05-18T00:59:19.537003Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:59:19.537003Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The NuSTAR X-ray Spectrum of Hercules X-1: A Radiation-Dominated Radiative Shock","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Amy M. Gottlieb, Diana M. Marcu-Cheatham, Felix F\\\"urst, Fritz-Walter Schwarm, J\\\"orn Wilms, Katja Pottschmidt, Kent S. Wood, Michael T. Wolff, Paul B. Hemphill, Peter A. Becker","submitted_at":"2016-08-31T18:22:09Z","abstract_excerpt":"We report new spectral modeling of the accreting X-ray pulsar Hercules X- 1. Our radiation-dominated radiative shock model is an implementation of the analytic work of Becker & Wolff on Comptonized accretion flows onto magnetic neutron stars. We obtain a good fit to the spin-phase averaged 4 to 78 keV X-ray spectrum observed by the Nuclear Spectroscopic Telescope Array during a main- on phase of the Her X-1 35-day accretion disk precession period. This model allows us to estimate the accretion rate, the Comptonizing temperature of the radiating plasma, the radius of the magnetic polar cap, and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.08978","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":"1608.08978","created_at":"2026-05-18T00:59:19.537090+00:00"},{"alias_kind":"arxiv_version","alias_value":"1608.08978v1","created_at":"2026-05-18T00:59:19.537090+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.08978","created_at":"2026-05-18T00:59:19.537090+00:00"},{"alias_kind":"pith_short_12","alias_value":"2ZTUISWRRBXU","created_at":"2026-05-18T12:29:55.572404+00:00"},{"alias_kind":"pith_short_16","alias_value":"2ZTUISWRRBXUYC6G","created_at":"2026-05-18T12:29:55.572404+00:00"},{"alias_kind":"pith_short_8","alias_value":"2ZTUISWR","created_at":"2026-05-18T12:29:55.572404+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/2ZTUISWRRBXUYC6GUJTVWUD2OL","json":"https://pith.science/pith/2ZTUISWRRBXUYC6GUJTVWUD2OL.json","graph_json":"https://pith.science/api/pith-number/2ZTUISWRRBXUYC6GUJTVWUD2OL/graph.json","events_json":"https://pith.science/api/pith-number/2ZTUISWRRBXUYC6GUJTVWUD2OL/events.json","paper":"https://pith.science/paper/2ZTUISWR"},"agent_actions":{"view_html":"https://pith.science/pith/2ZTUISWRRBXUYC6GUJTVWUD2OL","download_json":"https://pith.science/pith/2ZTUISWRRBXUYC6GUJTVWUD2OL.json","view_paper":"https://pith.science/paper/2ZTUISWR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1608.08978&json=true","fetch_graph":"https://pith.science/api/pith-number/2ZTUISWRRBXUYC6GUJTVWUD2OL/graph.json","fetch_events":"https://pith.science/api/pith-number/2ZTUISWRRBXUYC6GUJTVWUD2OL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2ZTUISWRRBXUYC6GUJTVWUD2OL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2ZTUISWRRBXUYC6GUJTVWUD2OL/action/storage_attestation","attest_author":"https://pith.science/pith/2ZTUISWRRBXUYC6GUJTVWUD2OL/action/author_attestation","sign_citation":"https://pith.science/pith/2ZTUISWRRBXUYC6GUJTVWUD2OL/action/citation_signature","submit_replication":"https://pith.science/pith/2ZTUISWRRBXUYC6GUJTVWUD2OL/action/replication_record"}},"created_at":"2026-05-18T00:59:19.537090+00:00","updated_at":"2026-05-18T00:59:19.537090+00:00"}