{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:IJO7FUOVPM22B3K62MNUSUUTRQ","short_pith_number":"pith:IJO7FUOV","schema_version":"1.0","canonical_sha256":"425df2d1d57b35a0ed5ed31b4952938c2a590295cba29e0c3e32037519f0da74","source":{"kind":"arxiv","id":"1908.10440","version":1},"attestation_state":"computed","paper":{"title":"Particle Probes with Superradiant Pulsars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","gr-qc","hep-th"],"primary_cat":"hep-ph","authors_text":"David E. Kaplan, Paul Riggins, Surjeet Rajendran","submitted_at":"2019-08-27T20:01:10Z","abstract_excerpt":"We demonstrate that rotational superradiance can be efficient in millisecond pulsars. Measurements from the two fastest known pulsars PSR J1748-2446ad and PSR B1937+21 can place bounds on bosons with masses below 10^{-11} eV. The bounds are maximally good at masses corresponding to the rotation rate of the star, where scalar interactions that mediate forces ~ 10^6 times weaker than gravity are ruled out, exceeding existing fifth force constraints by 3 orders of magnitude. For certain neutron star equations of state, these measurements would also constrain the QCD axion with masses between 5 10"},"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":"1908.10440","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-08-27T20:01:10Z","cross_cats_sorted":["astro-ph.HE","gr-qc","hep-th"],"title_canon_sha256":"40f8d6caafdcce5c180b7c2b6383f9246908b8f5b29b163794c313e81702e63f","abstract_canon_sha256":"b51a5e12c499335ee343e99aff88571fd6a752856fa3ecbc989cd41936e6bd6c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:00:17.263741Z","signature_b64":"Kzs20VRLg49d15BREbV9/qvqN3HIKFErXn6uNsKsxB5oFC09W5NxWUA0Wdip5yrqKkh05RR6++YJN6HPR2UEAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"425df2d1d57b35a0ed5ed31b4952938c2a590295cba29e0c3e32037519f0da74","last_reissued_at":"2026-07-05T00:00:17.263368Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:00:17.263368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Particle Probes with Superradiant Pulsars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","gr-qc","hep-th"],"primary_cat":"hep-ph","authors_text":"David E. Kaplan, Paul Riggins, Surjeet Rajendran","submitted_at":"2019-08-27T20:01:10Z","abstract_excerpt":"We demonstrate that rotational superradiance can be efficient in millisecond pulsars. Measurements from the two fastest known pulsars PSR J1748-2446ad and PSR B1937+21 can place bounds on bosons with masses below 10^{-11} eV. The bounds are maximally good at masses corresponding to the rotation rate of the star, where scalar interactions that mediate forces ~ 10^6 times weaker than gravity are ruled out, exceeding existing fifth force constraints by 3 orders of magnitude. For certain neutron star equations of state, these measurements would also constrain the QCD axion with masses between 5 10"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.10440","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/1908.10440/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":"1908.10440","created_at":"2026-07-05T00:00:17.263426+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.10440v1","created_at":"2026-07-05T00:00:17.263426+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.10440","created_at":"2026-07-05T00:00:17.263426+00:00"},{"alias_kind":"pith_short_12","alias_value":"IJO7FUOVPM22","created_at":"2026-07-05T00:00:17.263426+00:00"},{"alias_kind":"pith_short_16","alias_value":"IJO7FUOVPM22B3K6","created_at":"2026-07-05T00:00:17.263426+00:00"},{"alias_kind":"pith_short_8","alias_value":"IJO7FUOV","created_at":"2026-07-05T00:00:17.263426+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2512.13816","citing_title":"Stellar Superradiance and Low-Energy Absorption in Dense Nuclear Media","ref_index":51,"is_internal_anchor":false},{"citing_arxiv_id":"1501.06570","citing_title":"Superradiance -- the 2020 Edition","ref_index":277,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/IJO7FUOVPM22B3K62MNUSUUTRQ","json":"https://pith.science/pith/IJO7FUOVPM22B3K62MNUSUUTRQ.json","graph_json":"https://pith.science/api/pith-number/IJO7FUOVPM22B3K62MNUSUUTRQ/graph.json","events_json":"https://pith.science/api/pith-number/IJO7FUOVPM22B3K62MNUSUUTRQ/events.json","paper":"https://pith.science/paper/IJO7FUOV"},"agent_actions":{"view_html":"https://pith.science/pith/IJO7FUOVPM22B3K62MNUSUUTRQ","download_json":"https://pith.science/pith/IJO7FUOVPM22B3K62MNUSUUTRQ.json","view_paper":"https://pith.science/paper/IJO7FUOV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.10440&json=true","fetch_graph":"https://pith.science/api/pith-number/IJO7FUOVPM22B3K62MNUSUUTRQ/graph.json","fetch_events":"https://pith.science/api/pith-number/IJO7FUOVPM22B3K62MNUSUUTRQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IJO7FUOVPM22B3K62MNUSUUTRQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IJO7FUOVPM22B3K62MNUSUUTRQ/action/storage_attestation","attest_author":"https://pith.science/pith/IJO7FUOVPM22B3K62MNUSUUTRQ/action/author_attestation","sign_citation":"https://pith.science/pith/IJO7FUOVPM22B3K62MNUSUUTRQ/action/citation_signature","submit_replication":"https://pith.science/pith/IJO7FUOVPM22B3K62MNUSUUTRQ/action/replication_record"}},"created_at":"2026-07-05T00:00:17.263426+00:00","updated_at":"2026-07-05T00:00:17.263426+00:00"}