{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:DW4XIVULEGEFEFVTX6GZF22SLJ","short_pith_number":"pith:DW4XIVUL","canonical_record":{"source":{"id":"2509.03001","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-09-03T04:23:45Z","cross_cats_sorted":[],"title_canon_sha256":"4e0f377643d4faa9dd7172b9328a7a7c4c6ba1eda9871db187c6aa923893753d","abstract_canon_sha256":"437b5968c388532dd46d494b334711e19c5142de7d61d1665f46bbf4f3bc28e1"},"schema_version":"1.0"},"canonical_sha256":"1db974568b21885216b3bf8d92eb525a4d7c7f85fe51db020759468285ad5f59","source":{"kind":"arxiv","id":"2509.03001","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.03001","created_at":"2026-07-05T12:04:01Z"},{"alias_kind":"arxiv_version","alias_value":"2509.03001v1","created_at":"2026-07-05T12:04:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.03001","created_at":"2026-07-05T12:04:01Z"},{"alias_kind":"pith_short_12","alias_value":"DW4XIVULEGEF","created_at":"2026-07-05T12:04:01Z"},{"alias_kind":"pith_short_16","alias_value":"DW4XIVULEGEFEFVT","created_at":"2026-07-05T12:04:01Z"},{"alias_kind":"pith_short_8","alias_value":"DW4XIVUL","created_at":"2026-07-05T12:04:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:DW4XIVULEGEFEFVTX6GZF22SLJ","target":"record","payload":{"canonical_record":{"source":{"id":"2509.03001","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-09-03T04:23:45Z","cross_cats_sorted":[],"title_canon_sha256":"4e0f377643d4faa9dd7172b9328a7a7c4c6ba1eda9871db187c6aa923893753d","abstract_canon_sha256":"437b5968c388532dd46d494b334711e19c5142de7d61d1665f46bbf4f3bc28e1"},"schema_version":"1.0"},"canonical_sha256":"1db974568b21885216b3bf8d92eb525a4d7c7f85fe51db020759468285ad5f59","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:04:01.680259Z","signature_b64":"YXS3seoMQB9mWxiLvVQq4c04zmx/5P55OrcT3Ak+Plajt3AxjOxnuVnU0phAc+CNdeMl/YjN2tFgfB/sQ3XyBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1db974568b21885216b3bf8d92eb525a4d7c7f85fe51db020759468285ad5f59","last_reissued_at":"2026-07-05T12:04:01.679523Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:04:01.679523Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.03001","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T12:04:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aeRKxx17Ona0eREtRASTcikXfJaSEDwxbw+uEJ7JV8CJTN42VPeOrkrbuaP0S1xeaRroYtXfhO0EcpSH5na1Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T19:43:30.305803Z"},"content_sha256":"36351ba917e971235471c4e684091eb923794370a3524ba1f8b1512fdce1a6d0","schema_version":"1.0","event_id":"sha256:36351ba917e971235471c4e684091eb923794370a3524ba1f8b1512fdce1a6d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:DW4XIVULEGEFEFVTX6GZF22SLJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low-frequency observations of low-mass binary systems with neutron star candidates","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Elena Brylyakova, Gayane Tyul'basheva, Marina Afonina, Sergei B. Popov, Sergei Tyul'bashev","submitted_at":"2025-09-03T04:23:45Z","abstract_excerpt":"Recently, astrometric and spectroscopic observations resulted in the discovery of several low-mass binaries with invisible components, which are expected to be compact objects. In about two dozen cases, the masses of these components are consistent with neutron stars. We use low-frequency archival data obtained with the Large Phased Array in Pushchino to search for radio emission from five of these systems. For all the systems, we do not detect persistent or periodic emission. In one case (2MASS J1527+3536), we identify a single radio burst with a flux of 13 Jy and a duration of 0.13 s. Howeve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.03001","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/2509.03001/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T12:04:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+OFpIi1YwXJCV4YNj8DoPMl+LkN2NDK70bFfQGYhUaXE2G/NqM9mrOxrjxLaA0VP1O7moQZxzvOX5H9QMEjrAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T19:43:30.306385Z"},"content_sha256":"43a8a8893c78a142c59bc83da1a37e7f8f5841b5eba7e68f77de8b4b64c15ad7","schema_version":"1.0","event_id":"sha256:43a8a8893c78a142c59bc83da1a37e7f8f5841b5eba7e68f77de8b4b64c15ad7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DW4XIVULEGEFEFVTX6GZF22SLJ/bundle.json","state_url":"https://pith.science/pith/DW4XIVULEGEFEFVTX6GZF22SLJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DW4XIVULEGEFEFVTX6GZF22SLJ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-05T19:43:30Z","links":{"resolver":"https://pith.science/pith/DW4XIVULEGEFEFVTX6GZF22SLJ","bundle":"https://pith.science/pith/DW4XIVULEGEFEFVTX6GZF22SLJ/bundle.json","state":"https://pith.science/pith/DW4XIVULEGEFEFVTX6GZF22SLJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DW4XIVULEGEFEFVTX6GZF22SLJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:DW4XIVULEGEFEFVTX6GZF22SLJ","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":"437b5968c388532dd46d494b334711e19c5142de7d61d1665f46bbf4f3bc28e1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-09-03T04:23:45Z","title_canon_sha256":"4e0f377643d4faa9dd7172b9328a7a7c4c6ba1eda9871db187c6aa923893753d"},"schema_version":"1.0","source":{"id":"2509.03001","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.03001","created_at":"2026-07-05T12:04:01Z"},{"alias_kind":"arxiv_version","alias_value":"2509.03001v1","created_at":"2026-07-05T12:04:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.03001","created_at":"2026-07-05T12:04:01Z"},{"alias_kind":"pith_short_12","alias_value":"DW4XIVULEGEF","created_at":"2026-07-05T12:04:01Z"},{"alias_kind":"pith_short_16","alias_value":"DW4XIVULEGEFEFVT","created_at":"2026-07-05T12:04:01Z"},{"alias_kind":"pith_short_8","alias_value":"DW4XIVUL","created_at":"2026-07-05T12:04:01Z"}],"graph_snapshots":[{"event_id":"sha256:43a8a8893c78a142c59bc83da1a37e7f8f5841b5eba7e68f77de8b4b64c15ad7","target":"graph","created_at":"2026-07-05T12:04:01Z","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/2509.03001/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recently, astrometric and spectroscopic observations resulted in the discovery of several low-mass binaries with invisible components, which are expected to be compact objects. In about two dozen cases, the masses of these components are consistent with neutron stars. We use low-frequency archival data obtained with the Large Phased Array in Pushchino to search for radio emission from five of these systems. For all the systems, we do not detect persistent or periodic emission. In one case (2MASS J1527+3536), we identify a single radio burst with a flux of 13 Jy and a duration of 0.13 s. Howeve","authors_text":"Elena Brylyakova, Gayane Tyul'basheva, Marina Afonina, Sergei B. Popov, Sergei Tyul'bashev","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-09-03T04:23:45Z","title":"Low-frequency observations of low-mass binary systems with neutron star candidates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.03001","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":"sha256:36351ba917e971235471c4e684091eb923794370a3524ba1f8b1512fdce1a6d0","target":"record","created_at":"2026-07-05T12:04:01Z","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":"437b5968c388532dd46d494b334711e19c5142de7d61d1665f46bbf4f3bc28e1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-09-03T04:23:45Z","title_canon_sha256":"4e0f377643d4faa9dd7172b9328a7a7c4c6ba1eda9871db187c6aa923893753d"},"schema_version":"1.0","source":{"id":"2509.03001","kind":"arxiv","version":1}},"canonical_sha256":"1db974568b21885216b3bf8d92eb525a4d7c7f85fe51db020759468285ad5f59","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1db974568b21885216b3bf8d92eb525a4d7c7f85fe51db020759468285ad5f59","first_computed_at":"2026-07-05T12:04:01.679523Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:04:01.679523Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YXS3seoMQB9mWxiLvVQq4c04zmx/5P55OrcT3Ak+Plajt3AxjOxnuVnU0phAc+CNdeMl/YjN2tFgfB/sQ3XyBg==","signature_status":"signed_v1","signed_at":"2026-07-05T12:04:01.680259Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.03001","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:36351ba917e971235471c4e684091eb923794370a3524ba1f8b1512fdce1a6d0","sha256:43a8a8893c78a142c59bc83da1a37e7f8f5841b5eba7e68f77de8b4b64c15ad7"],"state_sha256":"3fd12d42ddc9c39f0905112a522dd01faf5a42cb8ab2faf34efc73a5cc691709"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A19dy2tvN3nnM6CNodpONKfDV/q/QMuBFkJW5/k1pr4lDhMu1IKAQfUEq5NpHld1sZjntPvnb66yM4drkHQYCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T19:43:30.312435Z","bundle_sha256":"f3ab9bd6420c9c618db10f6d695f01fc1a8a1ddd206be093d5b0f46f2be66340"}}