{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:MELAI6NHRQKKD5BJX7K56A33FZ","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":"e9c55474caf33229bfac7fcbccb23e14d0b771f9429e6a89d0a8f712397d2a91","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-05-15T17:08:42Z","title_canon_sha256":"6672b9c60520a51b71b37700d04f91adadc3833d7fbdbc9e9eb5826f5fb2d17e"},"schema_version":"1.0","source":{"id":"astro-ph/0305283","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0305283","created_at":"2026-07-04T16:37:08Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0305283v1","created_at":"2026-07-04T16:37:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0305283","created_at":"2026-07-04T16:37:08Z"},{"alias_kind":"pith_short_12","alias_value":"MELAI6NHRQKK","created_at":"2026-07-04T16:37:08Z"},{"alias_kind":"pith_short_16","alias_value":"MELAI6NHRQKKD5BJ","created_at":"2026-07-04T16:37:08Z"},{"alias_kind":"pith_short_8","alias_value":"MELAI6NH","created_at":"2026-07-04T16:37:08Z"}],"graph_snapshots":[{"event_id":"sha256:026027b3d50fe0ea218c7c09d55c6ab44e44cb071a2b6086fafba81507702d8e","target":"graph","created_at":"2026-07-04T16:37:08Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0305283/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"RX J0806+15 has recently been identified as the binary system with the shortest known orbital period. We present a series of observations of RX J0806+15 including new optical observations taken one month apart. Using these observations and archival data we find that the period of this system is decreasing over time. Our measurements imply f_dot = 6.11x10^-16 Hz/s, which is in agreement with a rate expected from the gravitational radiation for two white dwarfs orbiting at a given period. However, a smaller value of f_dot = 3.14x10^-16 Hz/s cannot be ruled out. Our result supports the idea that ","authors_text":"Arto Jarvinen, Gavin Ramsay, Kinwah Wu, Linnea Hjalmarsdotter, Mark Cropper, Pasi Hakala, Silva Jarvinen","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-05-15T17:08:42Z","title":"Spin up in RX J0806+15 - the shortest period binary"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0305283","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":"sha256:63b7508d97f1a3cced18bd475eab403437a55179fd9b54b02577a842d450c1ff","target":"record","created_at":"2026-07-04T16:37:08Z","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":"e9c55474caf33229bfac7fcbccb23e14d0b771f9429e6a89d0a8f712397d2a91","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-05-15T17:08:42Z","title_canon_sha256":"6672b9c60520a51b71b37700d04f91adadc3833d7fbdbc9e9eb5826f5fb2d17e"},"schema_version":"1.0","source":{"id":"astro-ph/0305283","kind":"arxiv","version":1}},"canonical_sha256":"61160479a78c14a1f429bfd5df037b2e7cc5a45d2dfc724901545e033b6dda7f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"61160479a78c14a1f429bfd5df037b2e7cc5a45d2dfc724901545e033b6dda7f","first_computed_at":"2026-07-04T16:37:08.822066Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:37:08.822066Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C9DwmrIqbusxTCQoCfOX353Kp1ay4yhGlqtA+2h6Z+iUD9gpQj974U6OQ3+WtQtTGb4xv/dQFl0kIkLIaAadAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:37:08.822495Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0305283","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:63b7508d97f1a3cced18bd475eab403437a55179fd9b54b02577a842d450c1ff","sha256:026027b3d50fe0ea218c7c09d55c6ab44e44cb071a2b6086fafba81507702d8e"],"state_sha256":"8447b76063c8387abf0672d4ac28eec3944dd2e9b771a95cc3c0f58281893529"}