{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:BRX4FPEINCSZAOPI4UVV2XMJBB","short_pith_number":"pith:BRX4FPEI","canonical_record":{"source":{"id":"1503.09085","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-31T15:26:19Z","cross_cats_sorted":[],"title_canon_sha256":"4a9132973a9cba0495dc7d436b7f3369dcb3cbc5aa76706b0a74478d3fc31dac","abstract_canon_sha256":"8ea903e932a5a6117934ced74fc518ca50a8e33465aaa307c46cefeeae5693f7"},"schema_version":"1.0"},"canonical_sha256":"0c6fc2bc8868a59039e8e52b5d5d89086c0666892e925ad1dbcbd0fe4213d0b7","source":{"kind":"arxiv","id":"1503.09085","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.09085","created_at":"2026-05-18T01:59:36Z"},{"alias_kind":"arxiv_version","alias_value":"1503.09085v1","created_at":"2026-05-18T01:59:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.09085","created_at":"2026-05-18T01:59:36Z"},{"alias_kind":"pith_short_12","alias_value":"BRX4FPEINCSZ","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BRX4FPEINCSZAOPI","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BRX4FPEI","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:BRX4FPEINCSZAOPI4UVV2XMJBB","target":"record","payload":{"canonical_record":{"source":{"id":"1503.09085","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-31T15:26:19Z","cross_cats_sorted":[],"title_canon_sha256":"4a9132973a9cba0495dc7d436b7f3369dcb3cbc5aa76706b0a74478d3fc31dac","abstract_canon_sha256":"8ea903e932a5a6117934ced74fc518ca50a8e33465aaa307c46cefeeae5693f7"},"schema_version":"1.0"},"canonical_sha256":"0c6fc2bc8868a59039e8e52b5d5d89086c0666892e925ad1dbcbd0fe4213d0b7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:36.793134Z","signature_b64":"P8QOoDO/O4Soyoe4ioCEnwE/q4idcmI/i89dpGObNzrsiNYGVL/rfPUsvkXvwYBO6KbFLhx/731JC5oS+0BNDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c6fc2bc8868a59039e8e52b5d5d89086c0666892e925ad1dbcbd0fe4213d0b7","last_reissued_at":"2026-05-18T01:59:36.792694Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:36.792694Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.09085","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":"2026-05-18T01:59:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8bNviKNigR/TC7aDEQ+BddkZT2fzMlZA+nE9VhgAXvU2pYC25nMQWf9W2D6RcxAyjtQiTHBGo00s4RqbYN41AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T20:11:49.355101Z"},"content_sha256":"bbe21607270d0303ba7631954abae7cbff5e614cbfcc7d4bb5da77b3463f5fef","schema_version":"1.0","event_id":"sha256:bbe21607270d0303ba7631954abae7cbff5e614cbfcc7d4bb5da77b3463f5fef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:BRX4FPEINCSZAOPI4UVV2XMJBB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Structural glitches near the cores of red giants revealed by oscillations in g-mode period spacings from stellar models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"D. Stello, J. Christensen-Dalsgaard, M.S. Cunha, P.P. Avelino, R.H.D. Townsend","submitted_at":"2015-03-31T15:26:19Z","abstract_excerpt":"With recent advances in asteroseismology it is now possible to peer into the cores of red giants, potentially providing a way to study processes such as nuclear burning and mixing through their imprint as sharp structural variations -- glitches -- in the stellar cores. Here we show how such core glitches can affect the oscillations we observe in red giants. We derive an analytical expression describing the expected frequency pattern in the presence of a glitch. This formulation also accounts for the coupling between acoustic and gravity waves. From an extensive set of canonical stellar models "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.09085","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":"2026-05-18T01:59:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qJyE1xCui6P6SUowcP8tXO2ckqdFx+JA/m3e6vEVKA6B1xcO4ZLrM6C3t1WaSrOhLwcxW17vuvhzWdVj+8WyBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T20:11:49.355474Z"},"content_sha256":"9ce850cd07186279dc2d4c1351a678f9b1f6f34274f8b06296efe97fe5faed76","schema_version":"1.0","event_id":"sha256:9ce850cd07186279dc2d4c1351a678f9b1f6f34274f8b06296efe97fe5faed76"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BRX4FPEINCSZAOPI4UVV2XMJBB/bundle.json","state_url":"https://pith.science/pith/BRX4FPEINCSZAOPI4UVV2XMJBB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BRX4FPEINCSZAOPI4UVV2XMJBB/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":"2026-05-19T20:11:49Z","links":{"resolver":"https://pith.science/pith/BRX4FPEINCSZAOPI4UVV2XMJBB","bundle":"https://pith.science/pith/BRX4FPEINCSZAOPI4UVV2XMJBB/bundle.json","state":"https://pith.science/pith/BRX4FPEINCSZAOPI4UVV2XMJBB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BRX4FPEINCSZAOPI4UVV2XMJBB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:BRX4FPEINCSZAOPI4UVV2XMJBB","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":"8ea903e932a5a6117934ced74fc518ca50a8e33465aaa307c46cefeeae5693f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-31T15:26:19Z","title_canon_sha256":"4a9132973a9cba0495dc7d436b7f3369dcb3cbc5aa76706b0a74478d3fc31dac"},"schema_version":"1.0","source":{"id":"1503.09085","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.09085","created_at":"2026-05-18T01:59:36Z"},{"alias_kind":"arxiv_version","alias_value":"1503.09085v1","created_at":"2026-05-18T01:59:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.09085","created_at":"2026-05-18T01:59:36Z"},{"alias_kind":"pith_short_12","alias_value":"BRX4FPEINCSZ","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BRX4FPEINCSZAOPI","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BRX4FPEI","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:9ce850cd07186279dc2d4c1351a678f9b1f6f34274f8b06296efe97fe5faed76","target":"graph","created_at":"2026-05-18T01:59:36Z","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":"With recent advances in asteroseismology it is now possible to peer into the cores of red giants, potentially providing a way to study processes such as nuclear burning and mixing through their imprint as sharp structural variations -- glitches -- in the stellar cores. Here we show how such core glitches can affect the oscillations we observe in red giants. We derive an analytical expression describing the expected frequency pattern in the presence of a glitch. This formulation also accounts for the coupling between acoustic and gravity waves. From an extensive set of canonical stellar models ","authors_text":"D. Stello, J. Christensen-Dalsgaard, M.S. Cunha, P.P. Avelino, R.H.D. Townsend","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-31T15:26:19Z","title":"Structural glitches near the cores of red giants revealed by oscillations in g-mode period spacings from stellar models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.09085","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:bbe21607270d0303ba7631954abae7cbff5e614cbfcc7d4bb5da77b3463f5fef","target":"record","created_at":"2026-05-18T01:59:36Z","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":"8ea903e932a5a6117934ced74fc518ca50a8e33465aaa307c46cefeeae5693f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-31T15:26:19Z","title_canon_sha256":"4a9132973a9cba0495dc7d436b7f3369dcb3cbc5aa76706b0a74478d3fc31dac"},"schema_version":"1.0","source":{"id":"1503.09085","kind":"arxiv","version":1}},"canonical_sha256":"0c6fc2bc8868a59039e8e52b5d5d89086c0666892e925ad1dbcbd0fe4213d0b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c6fc2bc8868a59039e8e52b5d5d89086c0666892e925ad1dbcbd0fe4213d0b7","first_computed_at":"2026-05-18T01:59:36.792694Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:36.792694Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P8QOoDO/O4Soyoe4ioCEnwE/q4idcmI/i89dpGObNzrsiNYGVL/rfPUsvkXvwYBO6KbFLhx/731JC5oS+0BNDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:36.793134Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.09085","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bbe21607270d0303ba7631954abae7cbff5e614cbfcc7d4bb5da77b3463f5fef","sha256:9ce850cd07186279dc2d4c1351a678f9b1f6f34274f8b06296efe97fe5faed76"],"state_sha256":"73b5c1207ff08f1550050995e4acd0ad43f2abac3eafe1ab38474e9bd0560a22"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v8pRVWpddyG+j0IImJ/AQpYXTAr2pMAaRL6ExMso51JztGXrffSiycAVcPZOU2Z5vJtCj9qxHPE5r7KNngFVBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T20:11:49.361250Z","bundle_sha256":"b67e67da157d1ea5b69fa1ab44db48a8fb50f0a46ca7af333dcfe6d90f1f94b3"}}