{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:7JRHGNMWZ6VKUR7O2XITIS2KXU","short_pith_number":"pith:7JRHGNMW","schema_version":"1.0","canonical_sha256":"fa62733596cfaaaa47eed5d1344b4abd1a238151a739428dd19486b213c3fbb5","source":{"kind":"arxiv","id":"0704.1388","version":1},"attestation_state":"computed","paper":{"title":"Why do some intermediate polars show soft X-ray emission? A survey of XMM-Newton spectra","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Coel Hellier (Keele University), P. A. Evans (Keele University, University of Leicester)","submitted_at":"2007-04-11T10:11:33Z","abstract_excerpt":"We make a systematic analysis of the XMM-Newton X-ray spectra of intermediate polars (IPs) and find that, contrary to the traditional picture, most show a soft blackbody component. We compare the results with those from AM Her stars and deduce that the blackbody emission arises from reprocessing of hard X-rays, rather than from the blobby accretion sometimes seen in AM Hers. Whether an IP shows a blackbody component appears to depend primarily on geometric factors: a blackbody is not seen in those that have accretion footprints that are always obscured by accretion curtains or are only visible"},"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":"0704.1388","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-04-11T10:11:33Z","cross_cats_sorted":[],"title_canon_sha256":"cf05ef695c89d721decca0b4a5ef0f1670e613b1942756cea55586714d1bad1e","abstract_canon_sha256":"cfb8b469db263df4f5c4adedc613421a16bcec835216e0d0af9fccff6aed593c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:44:12.873166Z","signature_b64":"6kT+U7EH8fLgeAh0Rghg3MPqHTvVJ5t41NqG7MCl3xURD7Fi4n2qj/mYgH2lyVItf9WqYeYkS4PUebUeElqbBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fa62733596cfaaaa47eed5d1344b4abd1a238151a739428dd19486b213c3fbb5","last_reissued_at":"2026-07-04T15:44:12.872793Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:44:12.872793Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Why do some intermediate polars show soft X-ray emission? A survey of XMM-Newton spectra","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Coel Hellier (Keele University), P. A. Evans (Keele University, University of Leicester)","submitted_at":"2007-04-11T10:11:33Z","abstract_excerpt":"We make a systematic analysis of the XMM-Newton X-ray spectra of intermediate polars (IPs) and find that, contrary to the traditional picture, most show a soft blackbody component. We compare the results with those from AM Her stars and deduce that the blackbody emission arises from reprocessing of hard X-rays, rather than from the blobby accretion sometimes seen in AM Hers. Whether an IP shows a blackbody component appears to depend primarily on geometric factors: a blackbody is not seen in those that have accretion footprints that are always obscured by accretion curtains or are only visible"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0704.1388","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0704.1388/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"0704.1388","created_at":"2026-07-04T15:44:12.872843+00:00"},{"alias_kind":"arxiv_version","alias_value":"0704.1388v1","created_at":"2026-07-04T15:44:12.872843+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0704.1388","created_at":"2026-07-04T15:44:12.872843+00:00"},{"alias_kind":"pith_short_12","alias_value":"7JRHGNMWZ6VK","created_at":"2026-07-04T15:44:12.872843+00:00"},{"alias_kind":"pith_short_16","alias_value":"7JRHGNMWZ6VKUR7O","created_at":"2026-07-04T15:44:12.872843+00:00"},{"alias_kind":"pith_short_8","alias_value":"7JRHGNMW","created_at":"2026-07-04T15:44:12.872843+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/7JRHGNMWZ6VKUR7O2XITIS2KXU","json":"https://pith.science/pith/7JRHGNMWZ6VKUR7O2XITIS2KXU.json","graph_json":"https://pith.science/api/pith-number/7JRHGNMWZ6VKUR7O2XITIS2KXU/graph.json","events_json":"https://pith.science/api/pith-number/7JRHGNMWZ6VKUR7O2XITIS2KXU/events.json","paper":"https://pith.science/paper/7JRHGNMW"},"agent_actions":{"view_html":"https://pith.science/pith/7JRHGNMWZ6VKUR7O2XITIS2KXU","download_json":"https://pith.science/pith/7JRHGNMWZ6VKUR7O2XITIS2KXU.json","view_paper":"https://pith.science/paper/7JRHGNMW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0704.1388&json=true","fetch_graph":"https://pith.science/api/pith-number/7JRHGNMWZ6VKUR7O2XITIS2KXU/graph.json","fetch_events":"https://pith.science/api/pith-number/7JRHGNMWZ6VKUR7O2XITIS2KXU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7JRHGNMWZ6VKUR7O2XITIS2KXU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7JRHGNMWZ6VKUR7O2XITIS2KXU/action/storage_attestation","attest_author":"https://pith.science/pith/7JRHGNMWZ6VKUR7O2XITIS2KXU/action/author_attestation","sign_citation":"https://pith.science/pith/7JRHGNMWZ6VKUR7O2XITIS2KXU/action/citation_signature","submit_replication":"https://pith.science/pith/7JRHGNMWZ6VKUR7O2XITIS2KXU/action/replication_record"}},"created_at":"2026-07-04T15:44:12.872843+00:00","updated_at":"2026-07-04T15:44:12.872843+00:00"}