{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:BYXM273JN53GESDJPQHRLSPWP7","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":"d206d6413ef7f7103c0a1ab2afec3d9c615d38b14f0a6b33476901661b4969bf","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-04-24T20:40:23Z","title_canon_sha256":"a364f8c9f0dcdcd3acfb6896badb0484a99ecdc6780521907b7141c6ca7e67be"},"schema_version":"1.0","source":{"id":"2304.13034","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.13034","created_at":"2026-07-05T06:04:38Z"},{"alias_kind":"arxiv_version","alias_value":"2304.13034v1","created_at":"2026-07-05T06:04:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.13034","created_at":"2026-07-05T06:04:38Z"},{"alias_kind":"pith_short_12","alias_value":"BYXM273JN53G","created_at":"2026-07-05T06:04:38Z"},{"alias_kind":"pith_short_16","alias_value":"BYXM273JN53GESDJ","created_at":"2026-07-05T06:04:38Z"},{"alias_kind":"pith_short_8","alias_value":"BYXM273J","created_at":"2026-07-05T06:04:38Z"}],"graph_snapshots":[{"event_id":"sha256:70ea246d648ac5da9691a42422aa1dcffc733431caeb5cb2e08bb22c74b9e2bb","target":"graph","created_at":"2026-07-05T06:04:38Z","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/2304.13034/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present multi-epoch spectropolarimetry and spectra for a sample of 14 Type IIn supernovae (SNe IIn). We find that after correcting for likely interstellar polarization, SNe IIn commonly show intrinsic continuum polarization of 1--3% at the time of peak optical luminosity, although a few show weaker or negligible polarization. While some SNe IIn have even stronger polarization at early times, their polarization tends to drop smoothly over several hundred days after peak. We find a tendency for the intrinsic polarization to be stronger at bluer wavelengths, especially at early times. While po","authors_text":"Christopher Bilinski, Douglas C. Leonard, G. Grant Williams, Jennifer Andrews, Jennifer L. Hoffman, Nathan Smith, Paul S. Smith, Peter Milne","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-04-24T20:40:23Z","title":"Multi-Epoch Spectropolarimetry for a Sample of Type IIn Supernovae: Persistent Asymmetry in Dusty Circumstellar Material"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.13034","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:df7e8496e8abe3ad16e2ce2f39829cb32a672ca760241aede74b56597f963164","target":"record","created_at":"2026-07-05T06:04:38Z","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":"d206d6413ef7f7103c0a1ab2afec3d9c615d38b14f0a6b33476901661b4969bf","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-04-24T20:40:23Z","title_canon_sha256":"a364f8c9f0dcdcd3acfb6896badb0484a99ecdc6780521907b7141c6ca7e67be"},"schema_version":"1.0","source":{"id":"2304.13034","kind":"arxiv","version":1}},"canonical_sha256":"0e2ecd7f696f766248697c0f15c9f67fc575af331802837c35d07da6fcce9944","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0e2ecd7f696f766248697c0f15c9f67fc575af331802837c35d07da6fcce9944","first_computed_at":"2026-07-05T06:04:38.873614Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:04:38.873614Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"77gKJTKup0hp+UBp29Fq15Vx6+Uf9zCUkKrBthB2MFj9dsO2by1kWf4C7szgxsAp6Q8kxeTsNm178c1hAstNAg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:04:38.874262Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.13034","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df7e8496e8abe3ad16e2ce2f39829cb32a672ca760241aede74b56597f963164","sha256:70ea246d648ac5da9691a42422aa1dcffc733431caeb5cb2e08bb22c74b9e2bb"],"state_sha256":"4fceb69327fcec0ab5a6d17e517c79e5c4c2d48b1c5d552ddf0682503ea8a13f"}