{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:4C6TJW63JMSOFDW3XT732LQAS3","short_pith_number":"pith:4C6TJW63","schema_version":"1.0","canonical_sha256":"e0bd34dbdb4b24e28edbbcffbd2e0096ec394bf0254af804b0c96e825a86713d","source":{"kind":"arxiv","id":"1408.2886","version":2},"attestation_state":"computed","paper":{"title":"2FGL J1653.6-0159: A New Low in Evaporating Pulsar Binary Periods","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Alexei V. Filippenko, Roger W. Romani, S. Bradley Cenko","submitted_at":"2014-08-13T00:25:36Z","abstract_excerpt":"We have identified an optical binary with orbital period P_b=4488s as the probable counterpart of the Fermi source 2FGL J1653.6-0159. Although pulsations have not yet been detected, the source properties are consistent with an evaporating millisecond pulsar binary; this P_b=75min is the record low for a spin-powered system. The heated side of the companion shows coherent radial velocity variations, with amplitude K=666.9+/-7.5 km/s for a large mass function of f(M)=1.60+/-0.05 M_sun. This heating suggests a pulsar luminosity ~3x10^34 erg/s. The colors and spectra show additional hard emission "},"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":"1408.2886","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-13T00:25:36Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"f48a18757f41c8f2bb30fa5a934a7640b5acd0a650135e0380f1404d8a1d121d","abstract_canon_sha256":"768d2ec6a8f420b96ef12b632abc786e6e8049fae03073b4b29b0fb4ddb4d481"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:21.120825Z","signature_b64":"nqIGO2ZXAvj0X/243oX3FrLgsMQip5r3tr1lyLsq3DFh08vE+3or4EF5pf44975q9aQz8ZZ19olegEHrbscuCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e0bd34dbdb4b24e28edbbcffbd2e0096ec394bf0254af804b0c96e825a86713d","last_reissued_at":"2026-05-18T01:42:21.120381Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:21.120381Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"2FGL J1653.6-0159: A New Low in Evaporating Pulsar Binary Periods","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Alexei V. Filippenko, Roger W. Romani, S. Bradley Cenko","submitted_at":"2014-08-13T00:25:36Z","abstract_excerpt":"We have identified an optical binary with orbital period P_b=4488s as the probable counterpart of the Fermi source 2FGL J1653.6-0159. Although pulsations have not yet been detected, the source properties are consistent with an evaporating millisecond pulsar binary; this P_b=75min is the record low for a spin-powered system. The heated side of the companion shows coherent radial velocity variations, with amplitude K=666.9+/-7.5 km/s for a large mass function of f(M)=1.60+/-0.05 M_sun. This heating suggests a pulsar luminosity ~3x10^34 erg/s. The colors and spectra show additional hard emission "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.2886","kind":"arxiv","version":2},"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":"1408.2886","created_at":"2026-05-18T01:42:21.120446+00:00"},{"alias_kind":"arxiv_version","alias_value":"1408.2886v2","created_at":"2026-05-18T01:42:21.120446+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.2886","created_at":"2026-05-18T01:42:21.120446+00:00"},{"alias_kind":"pith_short_12","alias_value":"4C6TJW63JMSO","created_at":"2026-05-18T12:28:14.216126+00:00"},{"alias_kind":"pith_short_16","alias_value":"4C6TJW63JMSOFDW3","created_at":"2026-05-18T12:28:14.216126+00:00"},{"alias_kind":"pith_short_8","alias_value":"4C6TJW63","created_at":"2026-05-18T12:28:14.216126+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/4C6TJW63JMSOFDW3XT732LQAS3","json":"https://pith.science/pith/4C6TJW63JMSOFDW3XT732LQAS3.json","graph_json":"https://pith.science/api/pith-number/4C6TJW63JMSOFDW3XT732LQAS3/graph.json","events_json":"https://pith.science/api/pith-number/4C6TJW63JMSOFDW3XT732LQAS3/events.json","paper":"https://pith.science/paper/4C6TJW63"},"agent_actions":{"view_html":"https://pith.science/pith/4C6TJW63JMSOFDW3XT732LQAS3","download_json":"https://pith.science/pith/4C6TJW63JMSOFDW3XT732LQAS3.json","view_paper":"https://pith.science/paper/4C6TJW63","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1408.2886&json=true","fetch_graph":"https://pith.science/api/pith-number/4C6TJW63JMSOFDW3XT732LQAS3/graph.json","fetch_events":"https://pith.science/api/pith-number/4C6TJW63JMSOFDW3XT732LQAS3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4C6TJW63JMSOFDW3XT732LQAS3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4C6TJW63JMSOFDW3XT732LQAS3/action/storage_attestation","attest_author":"https://pith.science/pith/4C6TJW63JMSOFDW3XT732LQAS3/action/author_attestation","sign_citation":"https://pith.science/pith/4C6TJW63JMSOFDW3XT732LQAS3/action/citation_signature","submit_replication":"https://pith.science/pith/4C6TJW63JMSOFDW3XT732LQAS3/action/replication_record"}},"created_at":"2026-05-18T01:42:21.120446+00:00","updated_at":"2026-05-18T01:42:21.120446+00:00"}