{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:QLNG43A5EOVZ62W5OZFATVDEBH","short_pith_number":"pith:QLNG43A5","canonical_record":{"source":{"id":"astro-ph/9606149","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-06-24T16:25:22Z","cross_cats_sorted":[],"title_canon_sha256":"9aae8c885e15b37afe04cbcfcb020b7d7080e06c3f5189a7cd73d3bc4aef1afc","abstract_canon_sha256":"99d7196a59d7b6d9c61522c70df2cb33cd185663adfdfcd87d48e81dfa8571ed"},"schema_version":"1.0"},"canonical_sha256":"82da6e6c1d23ab9f6add764a09d46409f2a833b0138b4bab429f4b0f30f53923","source":{"kind":"arxiv","id":"astro-ph/9606149","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9606149","created_at":"2026-05-18T04:21:40Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9606149v1","created_at":"2026-05-18T04:21:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9606149","created_at":"2026-05-18T04:21:40Z"},{"alias_kind":"pith_short_12","alias_value":"QLNG43A5EOVZ","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"QLNG43A5EOVZ62W5","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"QLNG43A5","created_at":"2026-05-18T12:25:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:QLNG43A5EOVZ62W5OZFATVDEBH","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9606149","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-06-24T16:25:22Z","cross_cats_sorted":[],"title_canon_sha256":"9aae8c885e15b37afe04cbcfcb020b7d7080e06c3f5189a7cd73d3bc4aef1afc","abstract_canon_sha256":"99d7196a59d7b6d9c61522c70df2cb33cd185663adfdfcd87d48e81dfa8571ed"},"schema_version":"1.0"},"canonical_sha256":"82da6e6c1d23ab9f6add764a09d46409f2a833b0138b4bab429f4b0f30f53923","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:21:40.623295Z","signature_b64":"iVqYBUHXxX1mXn0GNdhxNOQVBrBeVOhNdB0cesqBEhGJKZUb7xmR/4oZRI9qGJPexCMaxTPFlD+tJDAFKm7YAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"82da6e6c1d23ab9f6add764a09d46409f2a833b0138b4bab429f4b0f30f53923","last_reissued_at":"2026-05-18T04:21:40.622598Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:21:40.622598Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9606149","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":"2026-05-18T04:21:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ruy85Hujz350zOvqPHn4LrMCSCgVkn6Hg+OPDEsvhFWh8pNssntzQNA873YPRZfVKpFTmet0H3DwhI5q8Q0VDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T11:30:36.468325Z"},"content_sha256":"444c0afee3a4e97fe54f46d9626fe8aa89fe9ddad2fbaa1be9f21d962648fe59","schema_version":"1.0","event_id":"sha256:444c0afee3a4e97fe54f46d9626fe8aa89fe9ddad2fbaa1be9f21d962648fe59"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:QLNG43A5EOVZ62W5OZFATVDEBH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The X-ray lightcurve of SN 1987A","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Max Planck Institut fuer extraterrestrische Physik), B. Aschenbach (2), G. Hasinger (1), J. Tr\\\"umper(2) ((1) Astrophysikalisches Institut Potsdam","submitted_at":"1996-06-24T16:25:22Z","abstract_excerpt":"X-ray observations of SN 1987A in the Magellanic Clouds have been performed throughout the ROSAT mission, using the PSPC and the HRI detectors. We present the X-ray light curve based on all observations in the years 1991-1995. For the first time a significant increase of the X-ray flux from SN 1987A can be seen, corresponding to X-ray luminosities (0.5-2 keV) of 0.8 - 2.2 X 10**34 erg/s about 4 - 8 years after the explosion. SN 1987A is surrounded by a ringlike nebula, which is thought to form the interface between the blue-supergiant wind and the denser red-supergiant wind of the progenitor. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9606149","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":"2026-05-18T04:21:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7RMQweXHYiQlpD7vlAS+N7nXIS1SjZFIE+agrxbIMWDUNtgqos/01t57NWmJ2i+JOiyqIVJOBfaANxQjALHaCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T11:30:36.468670Z"},"content_sha256":"e9de2b0d7e720648c65986b8e6af7336b4dea23deec5257c83c7e278bbd56d4e","schema_version":"1.0","event_id":"sha256:e9de2b0d7e720648c65986b8e6af7336b4dea23deec5257c83c7e278bbd56d4e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QLNG43A5EOVZ62W5OZFATVDEBH/bundle.json","state_url":"https://pith.science/pith/QLNG43A5EOVZ62W5OZFATVDEBH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QLNG43A5EOVZ62W5OZFATVDEBH/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":"2026-06-29T11:30:36Z","links":{"resolver":"https://pith.science/pith/QLNG43A5EOVZ62W5OZFATVDEBH","bundle":"https://pith.science/pith/QLNG43A5EOVZ62W5OZFATVDEBH/bundle.json","state":"https://pith.science/pith/QLNG43A5EOVZ62W5OZFATVDEBH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QLNG43A5EOVZ62W5OZFATVDEBH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:QLNG43A5EOVZ62W5OZFATVDEBH","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":"99d7196a59d7b6d9c61522c70df2cb33cd185663adfdfcd87d48e81dfa8571ed","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-06-24T16:25:22Z","title_canon_sha256":"9aae8c885e15b37afe04cbcfcb020b7d7080e06c3f5189a7cd73d3bc4aef1afc"},"schema_version":"1.0","source":{"id":"astro-ph/9606149","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9606149","created_at":"2026-05-18T04:21:40Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9606149v1","created_at":"2026-05-18T04:21:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9606149","created_at":"2026-05-18T04:21:40Z"},{"alias_kind":"pith_short_12","alias_value":"QLNG43A5EOVZ","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"QLNG43A5EOVZ62W5","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"QLNG43A5","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:e9de2b0d7e720648c65986b8e6af7336b4dea23deec5257c83c7e278bbd56d4e","target":"graph","created_at":"2026-05-18T04:21:40Z","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":"X-ray observations of SN 1987A in the Magellanic Clouds have been performed throughout the ROSAT mission, using the PSPC and the HRI detectors. We present the X-ray light curve based on all observations in the years 1991-1995. For the first time a significant increase of the X-ray flux from SN 1987A can be seen, corresponding to X-ray luminosities (0.5-2 keV) of 0.8 - 2.2 X 10**34 erg/s about 4 - 8 years after the explosion. SN 1987A is surrounded by a ringlike nebula, which is thought to form the interface between the blue-supergiant wind and the denser red-supergiant wind of the progenitor. ","authors_text":"(2) Max Planck Institut fuer extraterrestrische Physik), B. Aschenbach (2), G. Hasinger (1), J. Tr\\\"umper(2) ((1) Astrophysikalisches Institut Potsdam","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1996-06-24T16:25:22Z","title":"The X-ray lightcurve of SN 1987A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9606149","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":"sha256:444c0afee3a4e97fe54f46d9626fe8aa89fe9ddad2fbaa1be9f21d962648fe59","target":"record","created_at":"2026-05-18T04:21:40Z","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":"99d7196a59d7b6d9c61522c70df2cb33cd185663adfdfcd87d48e81dfa8571ed","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-06-24T16:25:22Z","title_canon_sha256":"9aae8c885e15b37afe04cbcfcb020b7d7080e06c3f5189a7cd73d3bc4aef1afc"},"schema_version":"1.0","source":{"id":"astro-ph/9606149","kind":"arxiv","version":1}},"canonical_sha256":"82da6e6c1d23ab9f6add764a09d46409f2a833b0138b4bab429f4b0f30f53923","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"82da6e6c1d23ab9f6add764a09d46409f2a833b0138b4bab429f4b0f30f53923","first_computed_at":"2026-05-18T04:21:40.622598Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:21:40.622598Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iVqYBUHXxX1mXn0GNdhxNOQVBrBeVOhNdB0cesqBEhGJKZUb7xmR/4oZRI9qGJPexCMaxTPFlD+tJDAFKm7YAw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:21:40.623295Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9606149","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:444c0afee3a4e97fe54f46d9626fe8aa89fe9ddad2fbaa1be9f21d962648fe59","sha256:e9de2b0d7e720648c65986b8e6af7336b4dea23deec5257c83c7e278bbd56d4e"],"state_sha256":"f15d45cf4bacbcd743f4cb30e86f1425d3508d134832f2d6c2bf01c438a10960"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gvMsaTqqNHCeYOVxRMqZFEkBUqS/jldXRhUCCHtWAS+aD/mqsBsm+w4T6oT+j1TJlbwNMjA9jgldiwcqAu/hAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T11:30:36.470559Z","bundle_sha256":"52c3341e30049095e8ba3ad6ca7c67cf94fbb6c611b14f8929e6aded21da3bbc"}}