{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:TFJ53R3YPZXLY5VDLPL27C2QTH","short_pith_number":"pith:TFJ53R3Y","canonical_record":{"source":{"id":"1809.07451","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-09-20T02:25:38Z","cross_cats_sorted":[],"title_canon_sha256":"56b8703dedc6d9ca493b65151acb9cddf4964f8d87d9a813d057b3efe774bd36","abstract_canon_sha256":"bf52ef1537e6e4d266520077223f78a521618d4f2f50c2bbc2a8c64c6e4e8427"},"schema_version":"1.0"},"canonical_sha256":"9953ddc7787e6ebc76a35bd7af8b5099e2f24779fdd8dd9f81dd5b305f91b9b6","source":{"kind":"arxiv","id":"1809.07451","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.07451","created_at":"2026-05-18T00:05:16Z"},{"alias_kind":"arxiv_version","alias_value":"1809.07451v1","created_at":"2026-05-18T00:05:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.07451","created_at":"2026-05-18T00:05:16Z"},{"alias_kind":"pith_short_12","alias_value":"TFJ53R3YPZXL","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"TFJ53R3YPZXLY5VD","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"TFJ53R3Y","created_at":"2026-05-18T12:32:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:TFJ53R3YPZXLY5VDLPL27C2QTH","target":"record","payload":{"canonical_record":{"source":{"id":"1809.07451","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-09-20T02:25:38Z","cross_cats_sorted":[],"title_canon_sha256":"56b8703dedc6d9ca493b65151acb9cddf4964f8d87d9a813d057b3efe774bd36","abstract_canon_sha256":"bf52ef1537e6e4d266520077223f78a521618d4f2f50c2bbc2a8c64c6e4e8427"},"schema_version":"1.0"},"canonical_sha256":"9953ddc7787e6ebc76a35bd7af8b5099e2f24779fdd8dd9f81dd5b305f91b9b6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:05:16.282549Z","signature_b64":"/tJX9HpUcUSStdJUasAiUTAa5AEXAjDJa8/qUKhbfBWf5R9VuE7KdfBR6sXvY/h2o7rzM/Bm1LMPRaIidCQdBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9953ddc7787e6ebc76a35bd7af8b5099e2f24779fdd8dd9f81dd5b305f91b9b6","last_reissued_at":"2026-05-18T00:05:16.281977Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:05:16.281977Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.07451","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":"2026-05-18T00:05:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nv3Uazf5J5DCn2RPQsqHRomREbEh1a1OLoBIzcHI8P87zVAoTplRYprLkJPHB9jk2zGp5cOv3menRwg8R9RPBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T00:59:11.807783Z"},"content_sha256":"70af575ac8cc66da446d00ea8ef1a12d9bc71478c10c7120a06ee48a692f906e","schema_version":"1.0","event_id":"sha256:70af575ac8cc66da446d00ea8ef1a12d9bc71478c10c7120a06ee48a692f906e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:TFJ53R3YPZXLY5VDLPL27C2QTH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alejandra D. Romero, Alejandro H. C\\'orsico, Ingrid Pelisoli, Leandro G. Althaus, S. O. Kepler","submitted_at":"2018-09-20T02:25:38Z","abstract_excerpt":"The Blue Large-Amplitude Pulsators (BLAPs) constitute a new class of pulsating stars. They are hot stars with effective temperatures of $T_{\\rm eff}\\sim 30\\,000$ K and surface gravities of $\\log g \\sim 4.9$, that pulsate with periods in the range $\\sim 20-40$ min. In Romero et al. (2018), we proposed that BLAPs are hot low-mass He-core pre-white dwarf (WD) stars that pulsate either in high-order non-radial $g$(gravity) modes or low-order radial modes, including the fundamental radial mode. The theoretical modes with periods in the observed range are unstable due to the $\\kappa$ mechanism assoc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.07451","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":"2026-05-18T00:05:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/AHAVtUynRPy6D05SBTJGwbQWEfMrQYTh2Yq3Zc3oo1ADPWwYB08Ku5AZr439UqTOI+v+gK7MTMvMb8qZfGyDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T00:59:11.808511Z"},"content_sha256":"6e1f41283de336549f83e8758c5b27add0b63ebc9726e17ad319e9ea96927c1e","schema_version":"1.0","event_id":"sha256:6e1f41283de336549f83e8758c5b27add0b63ebc9726e17ad319e9ea96927c1e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TFJ53R3YPZXLY5VDLPL27C2QTH/bundle.json","state_url":"https://pith.science/pith/TFJ53R3YPZXLY5VDLPL27C2QTH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TFJ53R3YPZXLY5VDLPL27C2QTH/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":"2026-06-10T00:59:11Z","links":{"resolver":"https://pith.science/pith/TFJ53R3YPZXLY5VDLPL27C2QTH","bundle":"https://pith.science/pith/TFJ53R3YPZXLY5VDLPL27C2QTH/bundle.json","state":"https://pith.science/pith/TFJ53R3YPZXLY5VDLPL27C2QTH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TFJ53R3YPZXLY5VDLPL27C2QTH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:TFJ53R3YPZXLY5VDLPL27C2QTH","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":"bf52ef1537e6e4d266520077223f78a521618d4f2f50c2bbc2a8c64c6e4e8427","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-09-20T02:25:38Z","title_canon_sha256":"56b8703dedc6d9ca493b65151acb9cddf4964f8d87d9a813d057b3efe774bd36"},"schema_version":"1.0","source":{"id":"1809.07451","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.07451","created_at":"2026-05-18T00:05:16Z"},{"alias_kind":"arxiv_version","alias_value":"1809.07451v1","created_at":"2026-05-18T00:05:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.07451","created_at":"2026-05-18T00:05:16Z"},{"alias_kind":"pith_short_12","alias_value":"TFJ53R3YPZXL","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"TFJ53R3YPZXLY5VD","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"TFJ53R3Y","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:6e1f41283de336549f83e8758c5b27add0b63ebc9726e17ad319e9ea96927c1e","target":"graph","created_at":"2026-05-18T00:05:16Z","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":"The Blue Large-Amplitude Pulsators (BLAPs) constitute a new class of pulsating stars. They are hot stars with effective temperatures of $T_{\\rm eff}\\sim 30\\,000$ K and surface gravities of $\\log g \\sim 4.9$, that pulsate with periods in the range $\\sim 20-40$ min. In Romero et al. (2018), we proposed that BLAPs are hot low-mass He-core pre-white dwarf (WD) stars that pulsate either in high-order non-radial $g$(gravity) modes or low-order radial modes, including the fundamental radial mode. The theoretical modes with periods in the observed range are unstable due to the $\\kappa$ mechanism assoc","authors_text":"Alejandra D. Romero, Alejandro H. C\\'orsico, Ingrid Pelisoli, Leandro G. Althaus, S. O. Kepler","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-09-20T02:25:38Z","title":"Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.07451","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":"sha256:70af575ac8cc66da446d00ea8ef1a12d9bc71478c10c7120a06ee48a692f906e","target":"record","created_at":"2026-05-18T00:05:16Z","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":"bf52ef1537e6e4d266520077223f78a521618d4f2f50c2bbc2a8c64c6e4e8427","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-09-20T02:25:38Z","title_canon_sha256":"56b8703dedc6d9ca493b65151acb9cddf4964f8d87d9a813d057b3efe774bd36"},"schema_version":"1.0","source":{"id":"1809.07451","kind":"arxiv","version":1}},"canonical_sha256":"9953ddc7787e6ebc76a35bd7af8b5099e2f24779fdd8dd9f81dd5b305f91b9b6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9953ddc7787e6ebc76a35bd7af8b5099e2f24779fdd8dd9f81dd5b305f91b9b6","first_computed_at":"2026-05-18T00:05:16.281977Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:05:16.281977Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/tJX9HpUcUSStdJUasAiUTAa5AEXAjDJa8/qUKhbfBWf5R9VuE7KdfBR6sXvY/h2o7rzM/Bm1LMPRaIidCQdBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:05:16.282549Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.07451","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:70af575ac8cc66da446d00ea8ef1a12d9bc71478c10c7120a06ee48a692f906e","sha256:6e1f41283de336549f83e8758c5b27add0b63ebc9726e17ad319e9ea96927c1e"],"state_sha256":"b3220b27397cd8704fef252b9e9ea4c5ada01549f2c23bb3a0350ef56f0b1922"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5k1gj4WvmPkgbySQTtz/WTNjmz0z2VLwKZjfcMKc49i+AyXtCleAdSNkOmwUPU1nBBgCcqnVkXPd0sukKpHJCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T00:59:11.812454Z","bundle_sha256":"3b425af25314bf460a3dd6a330685679fbca3eb47770392002e6408d115fe28a"}}