{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1995:XS6QCZMXPZXGKJANVSSNMPO6N6","short_pith_number":"pith:XS6QCZMX","canonical_record":{"source":{"id":"astro-ph/9502038","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-02-07T04:29:46Z","cross_cats_sorted":[],"title_canon_sha256":"e7a0938286624b215c2bbebf9eab285e1d5ca2228f906fa4ce0fc45c5102d2e2","abstract_canon_sha256":"c0df6f9645efcc98e42698d09ed6aae8eff6951c25a12db75c325a12f7d449db"},"schema_version":"1.0"},"canonical_sha256":"bcbd0165977e6e65240daca4d63dde6f883f43d182cbe7dbab5c8425257e7baa","source":{"kind":"arxiv","id":"astro-ph/9502038","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9502038","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9502038v1","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9502038","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"pith_short_12","alias_value":"XS6QCZMXPZXG","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"XS6QCZMXPZXGKJAN","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"XS6QCZMX","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1995:XS6QCZMXPZXGKJANVSSNMPO6N6","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9502038","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-02-07T04:29:46Z","cross_cats_sorted":[],"title_canon_sha256":"e7a0938286624b215c2bbebf9eab285e1d5ca2228f906fa4ce0fc45c5102d2e2","abstract_canon_sha256":"c0df6f9645efcc98e42698d09ed6aae8eff6951c25a12db75c325a12f7d449db"},"schema_version":"1.0"},"canonical_sha256":"bcbd0165977e6e65240daca4d63dde6f883f43d182cbe7dbab5c8425257e7baa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:42.357553Z","signature_b64":"DJxgd2cqUAADzplxwNl+qsMIZro6D5AbIlspZk0GN3FB2rxu09v2XlOVp15yRWIPaIdzk/2muY34diuHJVbgBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bcbd0165977e6e65240daca4d63dde6f883f43d182cbe7dbab5c8425257e7baa","last_reissued_at":"2026-05-18T01:07:42.356931Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:42.356931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9502038","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":"2026-05-18T01:07:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kiEkZH/kF9eXgpfgK0C/l4cUZN4CH3JJsvWU8itbQEDNn0Ol1PWkUZbpjdaV4tjLK9mSmsJzA9fzetu9vwRHBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:33:27.612851Z"},"content_sha256":"96a9458c99002dd58c726652ffba92c311b7ca726fb33b9085a97087bd82428a","schema_version":"1.0","event_id":"sha256:96a9458c99002dd58c726652ffba92c311b7ca726fb33b9085a97087bd82428a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1995:XS6QCZMXPZXGKJANVSSNMPO6N6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Luminous Companion to SGR 1806-20","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Caltech), G. Neugebauer (Palomar Observatory, K. Matthews, M. H. van Kerkwijk, S. R. Kulkarni","submitted_at":"1995-02-07T04:29:46Z","abstract_excerpt":"We have obtained infrared spectra of the star suggested to be the counterpart of the soft gamma-ray repeater (SGR) 1806-20. We found strong emission lines similar to those seen in the spectra of the rare Luminous Blue Variables and B[e] stars. A He I absorption line is also seen, from which we infer a spectral type O9--B2. This classification, in combination with the minimum distance of $\\simgt6$ kpc inferred from its extinction, makes the star one of the most luminous in the Galaxy. We infer that it is a companion to SGR 1806-20, and suggest that the presence of a companion is somehow related"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9502038","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":"2026-05-18T01:07:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zf3bZzBui8PyRMuSln17+fPRMaH+G4IHwNsS0PVLpKuQiKdWzgmGZHTbGl6nUkULg0FdY0LxjiuDyVqoh7AMAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:33:27.613216Z"},"content_sha256":"0c22f4fbf62c02b46cd1f7ad03d75100e20d9f8f7d3b0506c82b21c5cf2457eb","schema_version":"1.0","event_id":"sha256:0c22f4fbf62c02b46cd1f7ad03d75100e20d9f8f7d3b0506c82b21c5cf2457eb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XS6QCZMXPZXGKJANVSSNMPO6N6/bundle.json","state_url":"https://pith.science/pith/XS6QCZMXPZXGKJANVSSNMPO6N6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XS6QCZMXPZXGKJANVSSNMPO6N6/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":"2026-05-30T22:33:27Z","links":{"resolver":"https://pith.science/pith/XS6QCZMXPZXGKJANVSSNMPO6N6","bundle":"https://pith.science/pith/XS6QCZMXPZXGKJANVSSNMPO6N6/bundle.json","state":"https://pith.science/pith/XS6QCZMXPZXGKJANVSSNMPO6N6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XS6QCZMXPZXGKJANVSSNMPO6N6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:XS6QCZMXPZXGKJANVSSNMPO6N6","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":"c0df6f9645efcc98e42698d09ed6aae8eff6951c25a12db75c325a12f7d449db","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-02-07T04:29:46Z","title_canon_sha256":"e7a0938286624b215c2bbebf9eab285e1d5ca2228f906fa4ce0fc45c5102d2e2"},"schema_version":"1.0","source":{"id":"astro-ph/9502038","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9502038","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9502038v1","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9502038","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"pith_short_12","alias_value":"XS6QCZMXPZXG","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"XS6QCZMXPZXGKJAN","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"XS6QCZMX","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:0c22f4fbf62c02b46cd1f7ad03d75100e20d9f8f7d3b0506c82b21c5cf2457eb","target":"graph","created_at":"2026-05-18T01:07:42Z","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 have obtained infrared spectra of the star suggested to be the counterpart of the soft gamma-ray repeater (SGR) 1806-20. We found strong emission lines similar to those seen in the spectra of the rare Luminous Blue Variables and B[e] stars. A He I absorption line is also seen, from which we infer a spectral type O9--B2. This classification, in combination with the minimum distance of $\\simgt6$ kpc inferred from its extinction, makes the star one of the most luminous in the Galaxy. We infer that it is a companion to SGR 1806-20, and suggest that the presence of a companion is somehow related","authors_text":"Caltech), G. Neugebauer (Palomar Observatory, K. Matthews, M. H. van Kerkwijk, S. R. Kulkarni","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1995-02-07T04:29:46Z","title":"A Luminous Companion to SGR 1806-20"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9502038","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":"sha256:96a9458c99002dd58c726652ffba92c311b7ca726fb33b9085a97087bd82428a","target":"record","created_at":"2026-05-18T01:07:42Z","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":"c0df6f9645efcc98e42698d09ed6aae8eff6951c25a12db75c325a12f7d449db","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-02-07T04:29:46Z","title_canon_sha256":"e7a0938286624b215c2bbebf9eab285e1d5ca2228f906fa4ce0fc45c5102d2e2"},"schema_version":"1.0","source":{"id":"astro-ph/9502038","kind":"arxiv","version":1}},"canonical_sha256":"bcbd0165977e6e65240daca4d63dde6f883f43d182cbe7dbab5c8425257e7baa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bcbd0165977e6e65240daca4d63dde6f883f43d182cbe7dbab5c8425257e7baa","first_computed_at":"2026-05-18T01:07:42.356931Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:42.356931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DJxgd2cqUAADzplxwNl+qsMIZro6D5AbIlspZk0GN3FB2rxu09v2XlOVp15yRWIPaIdzk/2muY34diuHJVbgBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:42.357553Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9502038","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:96a9458c99002dd58c726652ffba92c311b7ca726fb33b9085a97087bd82428a","sha256:0c22f4fbf62c02b46cd1f7ad03d75100e20d9f8f7d3b0506c82b21c5cf2457eb"],"state_sha256":"1202c22e944ebecc7c0e6c84a29b1ea15ebbd0e54bf020626dbf2268f8d3629a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hv61LN46+7rEkZd5KvGXL8xD5aagfIjcjBh6GYJQoPa5E4HQTxNQsfeE7Fzd6lIEOG7rGUtkc0VGcm04nUiBDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T22:33:27.615351Z","bundle_sha256":"b3fcc8dad829e7b8365308be838248de3a49f712305a17e016cb6146f2394bc0"}}