{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:LEDNH2PSUO5RWXFA52VEB6IZB2","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":"597b126c594727126ee7bdc72223eaa6ce24bce53ad6482e13d7929c8b362b7c","cross_cats_sorted":["astro-ph.SR","gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-10-16T16:49:30Z","title_canon_sha256":"483910d384f6bec54818292aeaf87563fbba2180cf457e98a0d3e60a7c46b0ea"},"schema_version":"1.0","source":{"id":"1710.05828","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.05828","created_at":"2026-05-18T00:32:48Z"},{"alias_kind":"arxiv_version","alias_value":"1710.05828v1","created_at":"2026-05-18T00:32:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.05828","created_at":"2026-05-18T00:32:48Z"},{"alias_kind":"pith_short_12","alias_value":"LEDNH2PSUO5R","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LEDNH2PSUO5RWXFA","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LEDNH2PS","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:cd89c950dbc86757e3c578acd63ed1ce3bcb1e5b16e6ce42aa10ef671213d2e2","target":"graph","created_at":"2026-05-18T00:32:48Z","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 discuss the feasibility of using astrophysical observations of white dwarfs as probes of fundamental physics. We quantify the effects of varying fundamental couplings on the white dwarf mass-radius relation in a broad class of unification scenarios, both for the simple case of a polytropic stellar structure model and for more general models. Independent measurements of the mass and radius, together with direct spectroscopic measurements of the fine-structure constant in white dwarf atmospheres lead to constraints on combinations of the two phenomenological parameters describing the underlyi","authors_text":"C. J. A. P. Martins, D. M. N. Magano, J. M. A. Vilas Boas","cross_cats":["astro-ph.SR","gr-qc","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-10-16T16:49:30Z","title":"Current and Future White Dwarf Mass-radius Constraints on Varying Fundamental Couplings and Unification Scenarios"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.05828","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":"sha256:815d1521ab960187fd0b73159056cbb421b6751609d47a4d077659b9364a5578","target":"record","created_at":"2026-05-18T00:32:48Z","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":"597b126c594727126ee7bdc72223eaa6ce24bce53ad6482e13d7929c8b362b7c","cross_cats_sorted":["astro-ph.SR","gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-10-16T16:49:30Z","title_canon_sha256":"483910d384f6bec54818292aeaf87563fbba2180cf457e98a0d3e60a7c46b0ea"},"schema_version":"1.0","source":{"id":"1710.05828","kind":"arxiv","version":1}},"canonical_sha256":"5906d3e9f2a3bb1b5ca0eeaa40f9190eab1fc95784160455f495bebdc26f151f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5906d3e9f2a3bb1b5ca0eeaa40f9190eab1fc95784160455f495bebdc26f151f","first_computed_at":"2026-05-18T00:32:48.038195Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:48.038195Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UiYuIHY4n8fxE8Wd6nKlgNORjzOX+4hzL9RB4koo3mq2zgw6bKmU/mZlKEhZ9lVhYsP0JJiHhOb8m5tRE9XjBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:48.039072Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.05828","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:815d1521ab960187fd0b73159056cbb421b6751609d47a4d077659b9364a5578","sha256:cd89c950dbc86757e3c578acd63ed1ce3bcb1e5b16e6ce42aa10ef671213d2e2"],"state_sha256":"c40f6664f0f29c67306c117fd0d98f7bac496d47929d31be6e0cc125a8b7e38f"}