{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:YNU7DVOIGHWUHGYZ5U5OFSJIQD","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"39e2e013dbcb7e3419662539a09a2c53053b9d54bd9537a782fec08c31fd5cb5","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-05-15T16:49:50Z","title_canon_sha256":"212feafa5fa20fbccc081e58394a2d8b5d606fb000d8e13f15cc988fe1a48b08"},"schema_version":"1.0","source":{"id":"1405.3908","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.3908","created_at":"2026-05-18T01:43:12Z"},{"alias_kind":"arxiv_version","alias_value":"1405.3908v1","created_at":"2026-05-18T01:43:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.3908","created_at":"2026-05-18T01:43:12Z"},{"alias_kind":"pith_short_12","alias_value":"YNU7DVOIGHWU","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"YNU7DVOIGHWUHGYZ","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"YNU7DVOI","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:4d7f9ca0a0b3d72066a0e7b6321e699c4833113cc93770e9a64cc117ccdb4f4a","target":"graph","created_at":"2026-05-18T01:43:12Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We construct a complete, hard X-ray flux-limited sample of intermediate polars (IPs) from the Swift-BAT 70-month survey, by imposing selection cuts in flux and Galactic latitude ($F_X > 2.5 \\times 10^{-11}\\,\\mathrm{erg\\,cm^{-2}s^{-1}}$ at 14--195~keV, and $|b|>5^\\circ$). We then use it to estimate the space density ($\\rho$) of IPs. Assuming that this sample of 15 long-period systems is representative of the intrinsic IP population, the space density of long-period IPs is $1^{+1}_{-0.5} \\times 10^{-7}\\,\\mathrm{pc^{-3}}$. The Swift-BAT data also allow us to place upper limits on the size of a hy","authors_text":"Koji Mukai, Magaretha L. Pretorius","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-05-15T16:49:50Z","title":"Constraints on the space density of intermediate polars from the Swift-BAT survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.3908","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5a388a527f22a0eff85024613eabe75ed8c9266f48642fa0fc4b957cec29fe91","target":"record","created_at":"2026-05-18T01:43:12Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"39e2e013dbcb7e3419662539a09a2c53053b9d54bd9537a782fec08c31fd5cb5","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-05-15T16:49:50Z","title_canon_sha256":"212feafa5fa20fbccc081e58394a2d8b5d606fb000d8e13f15cc988fe1a48b08"},"schema_version":"1.0","source":{"id":"1405.3908","kind":"arxiv","version":1}},"canonical_sha256":"c369f1d5c831ed439b19ed3ae2c92880fd13a4c936f75cb390031ef69b4c0031","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c369f1d5c831ed439b19ed3ae2c92880fd13a4c936f75cb390031ef69b4c0031","first_computed_at":"2026-05-18T01:43:12.049071Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:12.049071Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BweHXKtwDiUgpDSdiG0SYxnFze/ToEg4Js8phDGlNOYadxN0Gwe3TJ3HxzJ/7O9B2CI1I1XBNCHebiU0K8BwDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:12.049759Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.3908","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a388a527f22a0eff85024613eabe75ed8c9266f48642fa0fc4b957cec29fe91","sha256:4d7f9ca0a0b3d72066a0e7b6321e699c4833113cc93770e9a64cc117ccdb4f4a"],"state_sha256":"ff7562bdb35034d21db3b0c1c889395cefda6b70f8944feaf494ca1b76ae065d"}