{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:5OHJPXRXM5EHTQZ7NJOLMKLLHH","short_pith_number":"pith:5OHJPXRX","schema_version":"1.0","canonical_sha256":"eb8e97de37674879c33f6a5cb6296b39d193385aca7f851a839fdf820b0e4997","source":{"kind":"arxiv","id":"2605.24145","version":1},"attestation_state":"computed","paper":{"title":"Inferring Neutron-Star Properties from Post-merger Gravitational-wave Spectra with Neural Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"gr-qc","authors_text":"Dimitrios Pesios, Nikolaos Stergioulas","submitted_at":"2026-05-22T19:07:00Z","abstract_excerpt":"We present a proof-of-concept study of the inverse problem of inferring neutron-star properties directly from the post-merger gravitational-wave spectrum of equal-mass binary neutron-star mergers. Using noise-free spectra from numerical-relativity catalogs, we train and compare three artificial-neural-network regression models and two multivariate linear-regression baselines to predict the stellar mass, $M$, the quadrupolar tidal deformability, $\\kappa_2^\\tau$, and the slope of the mass--radius relation, $dR/dM$. Since the inverse mapping is nonlinear and cannot be obtained by analytically inv"},"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":"2605.24145","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-05-22T19:07:00Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"09e11e6cf7b7419ac9a7475e0552828993ddb44bfb42078ec6df2fb70f469370","abstract_canon_sha256":"d6ccb404424dd8004a21979bc11d81bca8fe7b906d2d72430d46b3678c33455a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-26T01:02:48.624341Z","signature_b64":"mO9vSkhQ8oD9cCmS97ExHgqtk2HtqRXpAMdRt1fzaieu4iTKSZdTjKQWeSBRCisziajI2+PxIZ2G1/b7bfHrDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eb8e97de37674879c33f6a5cb6296b39d193385aca7f851a839fdf820b0e4997","last_reissued_at":"2026-05-26T01:02:48.623595Z","signature_status":"signed_v1","first_computed_at":"2026-05-26T01:02:48.623595Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Inferring Neutron-Star Properties from Post-merger Gravitational-wave Spectra with Neural Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"gr-qc","authors_text":"Dimitrios Pesios, Nikolaos Stergioulas","submitted_at":"2026-05-22T19:07:00Z","abstract_excerpt":"We present a proof-of-concept study of the inverse problem of inferring neutron-star properties directly from the post-merger gravitational-wave spectrum of equal-mass binary neutron-star mergers. Using noise-free spectra from numerical-relativity catalogs, we train and compare three artificial-neural-network regression models and two multivariate linear-regression baselines to predict the stellar mass, $M$, the quadrupolar tidal deformability, $\\kappa_2^\\tau$, and the slope of the mass--radius relation, $dR/dM$. Since the inverse mapping is nonlinear and cannot be obtained by analytically inv"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.24145","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/2605.24145/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":"2605.24145","created_at":"2026-05-26T01:02:48.623702+00:00"},{"alias_kind":"arxiv_version","alias_value":"2605.24145v1","created_at":"2026-05-26T01:02:48.623702+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.24145","created_at":"2026-05-26T01:02:48.623702+00:00"},{"alias_kind":"pith_short_12","alias_value":"5OHJPXRXM5EH","created_at":"2026-05-26T01:02:48.623702+00:00"},{"alias_kind":"pith_short_16","alias_value":"5OHJPXRXM5EHTQZ7","created_at":"2026-05-26T01:02:48.623702+00:00"},{"alias_kind":"pith_short_8","alias_value":"5OHJPXRX","created_at":"2026-05-26T01:02:48.623702+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/5OHJPXRXM5EHTQZ7NJOLMKLLHH","json":"https://pith.science/pith/5OHJPXRXM5EHTQZ7NJOLMKLLHH.json","graph_json":"https://pith.science/api/pith-number/5OHJPXRXM5EHTQZ7NJOLMKLLHH/graph.json","events_json":"https://pith.science/api/pith-number/5OHJPXRXM5EHTQZ7NJOLMKLLHH/events.json","paper":"https://pith.science/paper/5OHJPXRX"},"agent_actions":{"view_html":"https://pith.science/pith/5OHJPXRXM5EHTQZ7NJOLMKLLHH","download_json":"https://pith.science/pith/5OHJPXRXM5EHTQZ7NJOLMKLLHH.json","view_paper":"https://pith.science/paper/5OHJPXRX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2605.24145&json=true","fetch_graph":"https://pith.science/api/pith-number/5OHJPXRXM5EHTQZ7NJOLMKLLHH/graph.json","fetch_events":"https://pith.science/api/pith-number/5OHJPXRXM5EHTQZ7NJOLMKLLHH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5OHJPXRXM5EHTQZ7NJOLMKLLHH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5OHJPXRXM5EHTQZ7NJOLMKLLHH/action/storage_attestation","attest_author":"https://pith.science/pith/5OHJPXRXM5EHTQZ7NJOLMKLLHH/action/author_attestation","sign_citation":"https://pith.science/pith/5OHJPXRXM5EHTQZ7NJOLMKLLHH/action/citation_signature","submit_replication":"https://pith.science/pith/5OHJPXRXM5EHTQZ7NJOLMKLLHH/action/replication_record"}},"created_at":"2026-05-26T01:02:48.623702+00:00","updated_at":"2026-05-26T01:02:48.623702+00:00"}