{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GQOBG3W5FLGXLRTFC7TR7MPJWH","short_pith_number":"pith:GQOBG3W5","canonical_record":{"source":{"id":"1806.03650","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-10T12:46:23Z","cross_cats_sorted":[],"title_canon_sha256":"e9ad045fc67e169b6b02a039dbbf3e9e25580bb267b38e6f751496421f4ef7d3","abstract_canon_sha256":"b351c8db46a4b5cf46895913f9b32172f89381b0dc7ffb4efbce09247233bb8c"},"schema_version":"1.0"},"canonical_sha256":"341c136edd2acd75c66517e71fb1e9b1f68878167d1d6fe69794f80a9c432ca6","source":{"kind":"arxiv","id":"1806.03650","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.03650","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"arxiv_version","alias_value":"1806.03650v1","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.03650","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"pith_short_12","alias_value":"GQOBG3W5FLGX","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GQOBG3W5FLGXLRTF","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GQOBG3W5","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GQOBG3W5FLGXLRTFC7TR7MPJWH","target":"record","payload":{"canonical_record":{"source":{"id":"1806.03650","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-10T12:46:23Z","cross_cats_sorted":[],"title_canon_sha256":"e9ad045fc67e169b6b02a039dbbf3e9e25580bb267b38e6f751496421f4ef7d3","abstract_canon_sha256":"b351c8db46a4b5cf46895913f9b32172f89381b0dc7ffb4efbce09247233bb8c"},"schema_version":"1.0"},"canonical_sha256":"341c136edd2acd75c66517e71fb1e9b1f68878167d1d6fe69794f80a9c432ca6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:16.566916Z","signature_b64":"aCl9UlId58y96K25Y7e1cMlIwVxhybfmSZGAq2GRdBloT5NvChbuL90hbfEiE7/M+bfjcFHZjVpfbe8sy4jnDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"341c136edd2acd75c66517e71fb1e9b1f68878167d1d6fe69794f80a9c432ca6","last_reissued_at":"2026-05-18T00:12:16.566177Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:16.566177Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.03650","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":"2026-05-18T00:12:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MVbt//tT2HV1ohdvujKy+3U2DaFP+gii7RKjd4JZ1JfQKuPkG1tWUuNXc3bpwjhRen9fbXTovCdHzjUoqb/aAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:37:33.393135Z"},"content_sha256":"19f409b9d4f81baf9b0981014f884c023855c60c8b13018a7673c4b50bd827fa","schema_version":"1.0","event_id":"sha256:19f409b9d4f81baf9b0981014f884c023855c60c8b13018a7673c4b50bd827fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GQOBG3W5FLGXLRTFC7TR7MPJWH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Refined Search for Pulsations in White Dwarf Companions to Millisecond Pulsars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Gianninas, A. H. Corsico, Alekzander Kosakowski, J. J. Hermes, John Antoniadis, Leandro G. Althaus, Leila M. Calcaferro, M. J. Green, Mukremin Kilic, Warren R. Brown","submitted_at":"2018-06-10T12:46:23Z","abstract_excerpt":"We present optical high-speed photometry of three millisecond pulsars with low-mass ($< 0.3 M_{\\odot}$) white dwarf companions, bringing the total number of such systems with follow-up time-series photometry to five. We confirm the detection of pulsations in one system, the white dwarf companion to PSR J1738+0333, and show that the pulsation frequencies and amplitudes are variable over many months. A full asteroseismic analysis for this star is under-constrained, but the mode periods we observe are consistent with expectations for a $M_{\\star} = 0.16 - 0.19 M_{\\odot}$ white dwarf, as suggested"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.03650","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":""},"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":"2026-05-18T00:12:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oQ9oztZN3K5dMcH0lMPADlji7wJTqe516wuVTR7lUgcFeiDkIghEaGvOuNqVtjraHhC1TpH+tBOAXJvi6BMvBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:37:33.393503Z"},"content_sha256":"c0b74361c2d9c103f317fefb242169c3c797761ef2c28504c455268ee2a47f7a","schema_version":"1.0","event_id":"sha256:c0b74361c2d9c103f317fefb242169c3c797761ef2c28504c455268ee2a47f7a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GQOBG3W5FLGXLRTFC7TR7MPJWH/bundle.json","state_url":"https://pith.science/pith/GQOBG3W5FLGXLRTFC7TR7MPJWH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GQOBG3W5FLGXLRTFC7TR7MPJWH/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":"2026-06-01T23:37:33Z","links":{"resolver":"https://pith.science/pith/GQOBG3W5FLGXLRTFC7TR7MPJWH","bundle":"https://pith.science/pith/GQOBG3W5FLGXLRTFC7TR7MPJWH/bundle.json","state":"https://pith.science/pith/GQOBG3W5FLGXLRTFC7TR7MPJWH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GQOBG3W5FLGXLRTFC7TR7MPJWH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GQOBG3W5FLGXLRTFC7TR7MPJWH","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":"b351c8db46a4b5cf46895913f9b32172f89381b0dc7ffb4efbce09247233bb8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-10T12:46:23Z","title_canon_sha256":"e9ad045fc67e169b6b02a039dbbf3e9e25580bb267b38e6f751496421f4ef7d3"},"schema_version":"1.0","source":{"id":"1806.03650","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.03650","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"arxiv_version","alias_value":"1806.03650v1","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.03650","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"pith_short_12","alias_value":"GQOBG3W5FLGX","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GQOBG3W5FLGXLRTF","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GQOBG3W5","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:c0b74361c2d9c103f317fefb242169c3c797761ef2c28504c455268ee2a47f7a","target":"graph","created_at":"2026-05-18T00:12:16Z","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 present optical high-speed photometry of three millisecond pulsars with low-mass ($< 0.3 M_{\\odot}$) white dwarf companions, bringing the total number of such systems with follow-up time-series photometry to five. We confirm the detection of pulsations in one system, the white dwarf companion to PSR J1738+0333, and show that the pulsation frequencies and amplitudes are variable over many months. A full asteroseismic analysis for this star is under-constrained, but the mode periods we observe are consistent with expectations for a $M_{\\star} = 0.16 - 0.19 M_{\\odot}$ white dwarf, as suggested","authors_text":"A. Gianninas, A. H. Corsico, Alekzander Kosakowski, J. J. Hermes, John Antoniadis, Leandro G. Althaus, Leila M. Calcaferro, M. J. Green, Mukremin Kilic, Warren R. Brown","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-10T12:46:23Z","title":"A Refined Search for Pulsations in White Dwarf Companions to Millisecond Pulsars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.03650","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":"sha256:19f409b9d4f81baf9b0981014f884c023855c60c8b13018a7673c4b50bd827fa","target":"record","created_at":"2026-05-18T00:12:16Z","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":"b351c8db46a4b5cf46895913f9b32172f89381b0dc7ffb4efbce09247233bb8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-10T12:46:23Z","title_canon_sha256":"e9ad045fc67e169b6b02a039dbbf3e9e25580bb267b38e6f751496421f4ef7d3"},"schema_version":"1.0","source":{"id":"1806.03650","kind":"arxiv","version":1}},"canonical_sha256":"341c136edd2acd75c66517e71fb1e9b1f68878167d1d6fe69794f80a9c432ca6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"341c136edd2acd75c66517e71fb1e9b1f68878167d1d6fe69794f80a9c432ca6","first_computed_at":"2026-05-18T00:12:16.566177Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:16.566177Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aCl9UlId58y96K25Y7e1cMlIwVxhybfmSZGAq2GRdBloT5NvChbuL90hbfEiE7/M+bfjcFHZjVpfbe8sy4jnDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:16.566916Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.03650","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19f409b9d4f81baf9b0981014f884c023855c60c8b13018a7673c4b50bd827fa","sha256:c0b74361c2d9c103f317fefb242169c3c797761ef2c28504c455268ee2a47f7a"],"state_sha256":"0f948daafc14ffcd759f8eadce69a4443765c82fc51b8ce299447144ace2f73b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t7f2kAUk40USXedyfb5msHHdO5xEfSUWxuxx8poWaAx9sFi0us6Ffo7g9UGhRQfh48JGm6BZlhYqLQLgHRlICg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T23:37:33.395507Z","bundle_sha256":"3ddf9514353934d8a9e352bd1107577810e7ebc35cf647e887aa68b18700af10"}}