{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:WQ4KDYBPB65MP6ADCMM5H2AX4L","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":"1a39d35b8cd40f85e3f4412f827a0091c80ee3ab8b6952e3d7eee39c26235f5f","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-01-18T19:00:05Z","title_canon_sha256":"467711f9d920409f5c70c17f99a3f9fbf486adef6e6494280393736d1c81a20c"},"schema_version":"1.0","source":{"id":"1701.05196","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.05196","created_at":"2026-05-18T00:50:17Z"},{"alias_kind":"arxiv_version","alias_value":"1701.05196v1","created_at":"2026-05-18T00:50:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.05196","created_at":"2026-05-18T00:50:17Z"},{"alias_kind":"pith_short_12","alias_value":"WQ4KDYBPB65M","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WQ4KDYBPB65MP6AD","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WQ4KDYBP","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:7dbe545d17f02b5bed3ab1454571da84d0734d7f445d4301b441501d2ef27167","target":"graph","created_at":"2026-05-18T00:50:17Z","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 a study of the continuum polarization over the 400--600 nm range of 19 Type Ia SNe obtained with FORS at the VLT. We separate them in those that show Na I D lines at the velocity of their hosts and those that do not. Continuum polarization of the sodium sample near maximum light displays a broad range of values, from extremely polarized cases like SN 2006X to almost unpolarized ones like SN 2011ae. The non--sodium sample shows, typically, smaller polarization values. The continuum polarization of the sodium sample in the 400--600 nm range is linear with wavelength and can be charact","authors_text":"A. Clocchiatti, D. Baade, E.Reilly, F. F\\\"orster, F. Patat, J.C. Wheele, J. Maund, J.R. Quinn, L. Wang, P. H\\\"oflich, P. Zelaya, S. Gonz\\'alez-Gait\\'an","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-01-18T19:00:05Z","title":"Continuum Foreground Polarization and Na~I Absorption in Type Ia SNe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.05196","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":"sha256:403c78a5cbc3af9f8a9b293e812d0a746964968838475638b97084a62363aef1","target":"record","created_at":"2026-05-18T00:50:17Z","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":"1a39d35b8cd40f85e3f4412f827a0091c80ee3ab8b6952e3d7eee39c26235f5f","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-01-18T19:00:05Z","title_canon_sha256":"467711f9d920409f5c70c17f99a3f9fbf486adef6e6494280393736d1c81a20c"},"schema_version":"1.0","source":{"id":"1701.05196","kind":"arxiv","version":1}},"canonical_sha256":"b438a1e02f0fbac7f8031319d3e817e2eb8cad86b41c0ef049a88921bb958ccb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b438a1e02f0fbac7f8031319d3e817e2eb8cad86b41c0ef049a88921bb958ccb","first_computed_at":"2026-05-18T00:50:17.119941Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:17.119941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FNZ6XDJEdldBgYHeEiG6566IfZRoonrUhfmrwCKPp7pPsBNk1/ihqMuHdwfEsegeNIubMfBJz91+ol73Fp7YAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:17.120573Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.05196","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:403c78a5cbc3af9f8a9b293e812d0a746964968838475638b97084a62363aef1","sha256:7dbe545d17f02b5bed3ab1454571da84d0734d7f445d4301b441501d2ef27167"],"state_sha256":"0a2b37a9db1cc7d6d217029525e3cde774aabf75e8feedaa600f253e3525a73f"}