{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:GBGEBQMNZT5PISFXYAYQ2C4CH7","short_pith_number":"pith:GBGEBQMN","canonical_record":{"source":{"id":"2505.15028","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-05-21T02:20:54Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"a07a192d8ea963a4f29cb567a2edb2f8b7f433860783bc33b0fdda1a6943dfad","abstract_canon_sha256":"f05d4ae92dc9d60332db959aa6e313c3e61ace3d50fa7f1be6f598475bbf5dce"},"schema_version":"1.0"},"canonical_sha256":"304c40c18dccfaf448b7c0310d0b823fdb87a6aaeb46cf1d33ac782991cf24b1","source":{"kind":"arxiv","id":"2505.15028","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.15028","created_at":"2026-07-05T11:06:39Z"},{"alias_kind":"arxiv_version","alias_value":"2505.15028v1","created_at":"2026-07-05T11:06:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.15028","created_at":"2026-07-05T11:06:39Z"},{"alias_kind":"pith_short_12","alias_value":"GBGEBQMNZT5P","created_at":"2026-07-05T11:06:39Z"},{"alias_kind":"pith_short_16","alias_value":"GBGEBQMNZT5PISFX","created_at":"2026-07-05T11:06:39Z"},{"alias_kind":"pith_short_8","alias_value":"GBGEBQMN","created_at":"2026-07-05T11:06:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:GBGEBQMNZT5PISFXYAYQ2C4CH7","target":"record","payload":{"canonical_record":{"source":{"id":"2505.15028","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-05-21T02:20:54Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"a07a192d8ea963a4f29cb567a2edb2f8b7f433860783bc33b0fdda1a6943dfad","abstract_canon_sha256":"f05d4ae92dc9d60332db959aa6e313c3e61ace3d50fa7f1be6f598475bbf5dce"},"schema_version":"1.0"},"canonical_sha256":"304c40c18dccfaf448b7c0310d0b823fdb87a6aaeb46cf1d33ac782991cf24b1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:06:39.517302Z","signature_b64":"Ked7CX15VWjVTQFapd3Jk4qCa68gcgQz3npxYi528QiVmprq6TR5vN7KpW5qP+nkpQiRBXvyGjAMqc9D6WoxCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"304c40c18dccfaf448b7c0310d0b823fdb87a6aaeb46cf1d33ac782991cf24b1","last_reissued_at":"2026-07-05T11:06:39.516848Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:06:39.516848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.15028","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":"2026-07-05T11:06:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"geHv6uGUMgYMixPCgLb4XGmgz4EfahEYKUllApLOe7Pk/xecRh5IH5xPO0KVJenz/OlTtPZSqVLlbAlQUqiDDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T11:48:49.230185Z"},"content_sha256":"82044ae51d6fdf10b93221f02f782981e252ea7386b16ed3bdca196597e673c8","schema_version":"1.0","event_id":"sha256:82044ae51d6fdf10b93221f02f782981e252ea7386b16ed3bdca196597e673c8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:GBGEBQMNZT5PISFXYAYQ2C4CH7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Analyzing Stellar and Interstellar Contributions to Polarization: Modeling Approaches for Hot Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A G Fullard, C Erba, D J Hillier, G V Panopoulou, P A Scowen, R Ignace","submitted_at":"2025-05-21T02:20:54Z","abstract_excerpt":"Linear polarimetry of unresolved stars is a powerful method for discerning or constraining the geometry of a source and its environment, since spherical sources produce no net polarization. However, a general challenge to interpreting intrinsic stellar polarization is the contribution to the signal by interstellar polarization (ISP). Here, we review methodologies for distinguishing the stellar signal from the interstellar contribution in the context of massive stars. We first characterize ISP with distance using a recent compilation of starlight polarization catalogs. Several scenarios involvi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.15028","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/2505.15028/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":"2026-07-05T11:06:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uQ0vCVmUH81Q2fA43yEftv+AdHpNtLSJf6fpX/Bel4Dbi9IDAgTNu3W3FQYbxvPcvQyG5eSitRwpn4TCnL8/Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T11:48:49.230865Z"},"content_sha256":"31ed68f04cfacd873c978519a62606e5c83f096041caa8216f3f5e2b4d8a6322","schema_version":"1.0","event_id":"sha256:31ed68f04cfacd873c978519a62606e5c83f096041caa8216f3f5e2b4d8a6322"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GBGEBQMNZT5PISFXYAYQ2C4CH7/bundle.json","state_url":"https://pith.science/pith/GBGEBQMNZT5PISFXYAYQ2C4CH7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GBGEBQMNZT5PISFXYAYQ2C4CH7/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":"2026-08-11T11:48:49Z","links":{"resolver":"https://pith.science/pith/GBGEBQMNZT5PISFXYAYQ2C4CH7","bundle":"https://pith.science/pith/GBGEBQMNZT5PISFXYAYQ2C4CH7/bundle.json","state":"https://pith.science/pith/GBGEBQMNZT5PISFXYAYQ2C4CH7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GBGEBQMNZT5PISFXYAYQ2C4CH7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:GBGEBQMNZT5PISFXYAYQ2C4CH7","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":"f05d4ae92dc9d60332db959aa6e313c3e61ace3d50fa7f1be6f598475bbf5dce","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-05-21T02:20:54Z","title_canon_sha256":"a07a192d8ea963a4f29cb567a2edb2f8b7f433860783bc33b0fdda1a6943dfad"},"schema_version":"1.0","source":{"id":"2505.15028","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.15028","created_at":"2026-07-05T11:06:39Z"},{"alias_kind":"arxiv_version","alias_value":"2505.15028v1","created_at":"2026-07-05T11:06:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.15028","created_at":"2026-07-05T11:06:39Z"},{"alias_kind":"pith_short_12","alias_value":"GBGEBQMNZT5P","created_at":"2026-07-05T11:06:39Z"},{"alias_kind":"pith_short_16","alias_value":"GBGEBQMNZT5PISFX","created_at":"2026-07-05T11:06:39Z"},{"alias_kind":"pith_short_8","alias_value":"GBGEBQMN","created_at":"2026-07-05T11:06:39Z"}],"graph_snapshots":[{"event_id":"sha256:31ed68f04cfacd873c978519a62606e5c83f096041caa8216f3f5e2b4d8a6322","target":"graph","created_at":"2026-07-05T11:06:39Z","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/2505.15028/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Linear polarimetry of unresolved stars is a powerful method for discerning or constraining the geometry of a source and its environment, since spherical sources produce no net polarization. However, a general challenge to interpreting intrinsic stellar polarization is the contribution to the signal by interstellar polarization (ISP). Here, we review methodologies for distinguishing the stellar signal from the interstellar contribution in the context of massive stars. We first characterize ISP with distance using a recent compilation of starlight polarization catalogs. Several scenarios involvi","authors_text":"A G Fullard, C Erba, D J Hillier, G V Panopoulou, P A Scowen, R Ignace","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-05-21T02:20:54Z","title":"Analyzing Stellar and Interstellar Contributions to Polarization: Modeling Approaches for Hot Stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.15028","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":"sha256:82044ae51d6fdf10b93221f02f782981e252ea7386b16ed3bdca196597e673c8","target":"record","created_at":"2026-07-05T11:06:39Z","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":"f05d4ae92dc9d60332db959aa6e313c3e61ace3d50fa7f1be6f598475bbf5dce","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-05-21T02:20:54Z","title_canon_sha256":"a07a192d8ea963a4f29cb567a2edb2f8b7f433860783bc33b0fdda1a6943dfad"},"schema_version":"1.0","source":{"id":"2505.15028","kind":"arxiv","version":1}},"canonical_sha256":"304c40c18dccfaf448b7c0310d0b823fdb87a6aaeb46cf1d33ac782991cf24b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"304c40c18dccfaf448b7c0310d0b823fdb87a6aaeb46cf1d33ac782991cf24b1","first_computed_at":"2026-07-05T11:06:39.516848Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:06:39.516848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ked7CX15VWjVTQFapd3Jk4qCa68gcgQz3npxYi528QiVmprq6TR5vN7KpW5qP+nkpQiRBXvyGjAMqc9D6WoxCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:06:39.517302Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.15028","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:82044ae51d6fdf10b93221f02f782981e252ea7386b16ed3bdca196597e673c8","sha256:31ed68f04cfacd873c978519a62606e5c83f096041caa8216f3f5e2b4d8a6322"],"state_sha256":"b6bf1b1979c51b96a4be68705034d988876b935fd77e31eb3adcaf09613019da"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GYo9gFHrtxtwnwifQMpegK2LjFObrw4b5Vf1xLLKgeSj818Np9AMGBhCdFYh5hi8sPGWH+umTOuSd5YH3BNaBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T11:48:49.234807Z","bundle_sha256":"d3ae399336f685a8bca5592878cee1f6eea3539a85d52d9da4fdc2b72bcca2ec"}}