{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:MKW4HMFLVSQIBNWSIDVTX3DGBT","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":"1dd2fb26401ccbce35424d75372dafc0b89c29844926493f890d1ab4b96eebee","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-12-14T00:10:25Z","title_canon_sha256":"b669cb9838886a4e1d9954e9e1a058176ce3054eeedc3e8f3a1b848383471b68"},"schema_version":"1.0","source":{"id":"astro-ph/9812253","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9812253","created_at":"2026-07-04T16:07:22Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9812253v1","created_at":"2026-07-04T16:07:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9812253","created_at":"2026-07-04T16:07:22Z"},{"alias_kind":"pith_short_12","alias_value":"MKW4HMFLVSQI","created_at":"2026-07-04T16:07:22Z"},{"alias_kind":"pith_short_16","alias_value":"MKW4HMFLVSQIBNWS","created_at":"2026-07-04T16:07:22Z"},{"alias_kind":"pith_short_8","alias_value":"MKW4HMFL","created_at":"2026-07-04T16:07:22Z"}],"graph_snapshots":[{"event_id":"sha256:0e3e71518d2704a50118d7ba476b3de4d90f6383869e4651dd4d0ac01ce6c4cf","target":"graph","created_at":"2026-07-04T16:07:22Z","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/astro-ph/9812253/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"IR and Radio band observations of heavily extinguished regions in starburst galaxies suggest a very high SN rate associated with such regions. Optically measured supernova (SN) rates may therefore underestimate the total SN rate by factors of up to 10, due to the high extinction to SNe in starburst regions. The IR/radio SN rates come from a variety of indirect means, however, which suffer from model dependence and other problems.\n  We describe a direct measurement of the SN rate from a regular patrol of starburst galaxies done with K' band imaging to minimize the effects of extinction. A colle","authors_text":"Brian M. Sutin, Bruce Grossan, Earl Spillar, Norbert Pirzkal, Paul Johnson, Robert Tripp","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1998-12-14T00:10:25Z","title":"An IR Search for Extinguished Supernovae in Starburst Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9812253","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:ef0cb80f7f750b26330152f7c7d6ed280355c8d84e80cb00393023ce5cb8a346","target":"record","created_at":"2026-07-04T16:07:22Z","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":"1dd2fb26401ccbce35424d75372dafc0b89c29844926493f890d1ab4b96eebee","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-12-14T00:10:25Z","title_canon_sha256":"b669cb9838886a4e1d9954e9e1a058176ce3054eeedc3e8f3a1b848383471b68"},"schema_version":"1.0","source":{"id":"astro-ph/9812253","kind":"arxiv","version":1}},"canonical_sha256":"62adc3b0abaca080b6d240eb3bec660ced14504438220b83e428d8dd8e196282","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"62adc3b0abaca080b6d240eb3bec660ced14504438220b83e428d8dd8e196282","first_computed_at":"2026-07-04T16:07:22.085629Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:07:22.085629Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2kSC6TLsY+C/KC04uFl8M/8xGD9DqYyUf7OygBkfQoRwJgxj6kxedEOiHHU9eiCjryvhsc1J9qvFQm6iM6JDDg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:07:22.086095Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9812253","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ef0cb80f7f750b26330152f7c7d6ed280355c8d84e80cb00393023ce5cb8a346","sha256:0e3e71518d2704a50118d7ba476b3de4d90f6383869e4651dd4d0ac01ce6c4cf"],"state_sha256":"ec5c6c010336ee0fd7e2d5104bd43952cc3194aa92f0eb906e9a682a127a3dcf"}