{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:2OPZJ7NDULXFSUHC4WDEYUXEUF","short_pith_number":"pith:2OPZJ7ND","canonical_record":{"source":{"id":"1208.2834","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-08-14T11:41:10Z","cross_cats_sorted":[],"title_canon_sha256":"8a69254fbe0ab2b4c275548dd4f4b31496834d2ee97afae027271dd78d6c7dbb","abstract_canon_sha256":"e6db9bbd6d91549bd005c8854307a9b310b8eed98769f58baaaf93a8f764782e"},"schema_version":"1.0"},"canonical_sha256":"d39f94fda3a2ee5950e2e5864c52e4a173cd455e913abf0dfde9a251203af363","source":{"kind":"arxiv","id":"1208.2834","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.2834","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"arxiv_version","alias_value":"1208.2834v1","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.2834","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"pith_short_12","alias_value":"2OPZJ7NDULXF","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2OPZJ7NDULXFSUHC","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2OPZJ7ND","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:2OPZJ7NDULXFSUHC4WDEYUXEUF","target":"record","payload":{"canonical_record":{"source":{"id":"1208.2834","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-08-14T11:41:10Z","cross_cats_sorted":[],"title_canon_sha256":"8a69254fbe0ab2b4c275548dd4f4b31496834d2ee97afae027271dd78d6c7dbb","abstract_canon_sha256":"e6db9bbd6d91549bd005c8854307a9b310b8eed98769f58baaaf93a8f764782e"},"schema_version":"1.0"},"canonical_sha256":"d39f94fda3a2ee5950e2e5864c52e4a173cd455e913abf0dfde9a251203af363","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:55:16.125368Z","signature_b64":"+hZOj2ybDbrEizB8lW5bkSyxykoXhsraQ4gRE1uA29l5MhT+zsCiYpcQivt1bXp1cf2HgjoUk+0UK4PmnkWaDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d39f94fda3a2ee5950e2e5864c52e4a173cd455e913abf0dfde9a251203af363","last_reissued_at":"2026-05-18T01:55:16.124971Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:55:16.124971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.2834","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":"2026-05-18T01:55:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7rlb9/TXEahOT6mrv6WRf6uEtW0NRXRPdZCjczP6iYT5QETQYcRllWQw71yb8bPpWYxQpu2fnfXQSTbNehrlBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:55:52.431358Z"},"content_sha256":"61a8da2c3e767407b9d4d832bf266d81d12b8cad5f7ff88c33cad4223efc089b","schema_version":"1.0","event_id":"sha256:61a8da2c3e767407b9d4d832bf266d81d12b8cad5f7ff88c33cad4223efc089b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:2OPZJ7NDULXFSUHC4WDEYUXEUF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simultaneous UBVRI observations of the cataclysmic variable AE Aquarii: temperature and mass of fireballs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. Spassov, G. Y. Latev, K. A. Stoyanov, R. K. Zamanov, S. Boeva, S. V. Tsvetkova","submitted_at":"2012-08-14T11:41:10Z","abstract_excerpt":"We report simultaneous multicolour observations in 5 bands (UBVRI) of the flickering variability of the cataclysmic variable AE Aqr. Our aim is to estimate the parameters (colours, temperature, size) of the fireballs that produce the optical flares.\n  The observed rise time of the optical flares is in the interval 220 - 440 sec. We estimate the dereddened colours of the fireballs: (U-B)_0 in the range 0.8-1.4, (B-V)_0 ~ 0.03-0.24, (V-I)_0 ~ 0.26-0.78. We find for the fireballs a temperature in the range 10000 - 25000 K, mass (7-90).10^{19} g, size (3-7).10^9 cm (using a distance of d=86 pc). T"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.2834","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":"2026-05-18T01:55:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MPU8n1Nyw8jgqFA2fRYZ1NC+MRst9u8TP5UVkWqrGYszdiE1b59vF8haci8qFn3tH7fS6eo0MVVyF5jEouGhBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:55:52.431706Z"},"content_sha256":"f83b87b7de56959c4ba591bfa38c7a98de3805f21e4da434a9a94086a3f70297","schema_version":"1.0","event_id":"sha256:f83b87b7de56959c4ba591bfa38c7a98de3805f21e4da434a9a94086a3f70297"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2OPZJ7NDULXFSUHC4WDEYUXEUF/bundle.json","state_url":"https://pith.science/pith/2OPZJ7NDULXFSUHC4WDEYUXEUF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2OPZJ7NDULXFSUHC4WDEYUXEUF/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":"2026-06-01T15:55:52Z","links":{"resolver":"https://pith.science/pith/2OPZJ7NDULXFSUHC4WDEYUXEUF","bundle":"https://pith.science/pith/2OPZJ7NDULXFSUHC4WDEYUXEUF/bundle.json","state":"https://pith.science/pith/2OPZJ7NDULXFSUHC4WDEYUXEUF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2OPZJ7NDULXFSUHC4WDEYUXEUF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:2OPZJ7NDULXFSUHC4WDEYUXEUF","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":"e6db9bbd6d91549bd005c8854307a9b310b8eed98769f58baaaf93a8f764782e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-08-14T11:41:10Z","title_canon_sha256":"8a69254fbe0ab2b4c275548dd4f4b31496834d2ee97afae027271dd78d6c7dbb"},"schema_version":"1.0","source":{"id":"1208.2834","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.2834","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"arxiv_version","alias_value":"1208.2834v1","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.2834","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"pith_short_12","alias_value":"2OPZJ7NDULXF","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2OPZJ7NDULXFSUHC","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2OPZJ7ND","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:f83b87b7de56959c4ba591bfa38c7a98de3805f21e4da434a9a94086a3f70297","target":"graph","created_at":"2026-05-18T01:55:16Z","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 report simultaneous multicolour observations in 5 bands (UBVRI) of the flickering variability of the cataclysmic variable AE Aqr. Our aim is to estimate the parameters (colours, temperature, size) of the fireballs that produce the optical flares.\n  The observed rise time of the optical flares is in the interval 220 - 440 sec. We estimate the dereddened colours of the fireballs: (U-B)_0 in the range 0.8-1.4, (B-V)_0 ~ 0.03-0.24, (V-I)_0 ~ 0.26-0.78. We find for the fireballs a temperature in the range 10000 - 25000 K, mass (7-90).10^{19} g, size (3-7).10^9 cm (using a distance of d=86 pc). T","authors_text":"B. Spassov, G. Y. Latev, K. A. Stoyanov, R. K. Zamanov, S. Boeva, S. V. Tsvetkova","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-08-14T11:41:10Z","title":"Simultaneous UBVRI observations of the cataclysmic variable AE Aquarii: temperature and mass of fireballs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.2834","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":"sha256:61a8da2c3e767407b9d4d832bf266d81d12b8cad5f7ff88c33cad4223efc089b","target":"record","created_at":"2026-05-18T01:55:16Z","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":"e6db9bbd6d91549bd005c8854307a9b310b8eed98769f58baaaf93a8f764782e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-08-14T11:41:10Z","title_canon_sha256":"8a69254fbe0ab2b4c275548dd4f4b31496834d2ee97afae027271dd78d6c7dbb"},"schema_version":"1.0","source":{"id":"1208.2834","kind":"arxiv","version":1}},"canonical_sha256":"d39f94fda3a2ee5950e2e5864c52e4a173cd455e913abf0dfde9a251203af363","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d39f94fda3a2ee5950e2e5864c52e4a173cd455e913abf0dfde9a251203af363","first_computed_at":"2026-05-18T01:55:16.124971Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:55:16.124971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+hZOj2ybDbrEizB8lW5bkSyxykoXhsraQ4gRE1uA29l5MhT+zsCiYpcQivt1bXp1cf2HgjoUk+0UK4PmnkWaDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:55:16.125368Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.2834","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:61a8da2c3e767407b9d4d832bf266d81d12b8cad5f7ff88c33cad4223efc089b","sha256:f83b87b7de56959c4ba591bfa38c7a98de3805f21e4da434a9a94086a3f70297"],"state_sha256":"46a2e2c74c466b5fee285392ca8c57f4090bb4d63adc2f583bfbd13a118d0fa6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QvTuFOEjyAvKnBir4HGulnfFpBpTdIfqXlN/aRhG6i2+/znzxaCXtIwR03fRTnQ2yojtZYgjUT7JE/xtWSGYCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T15:55:52.434571Z","bundle_sha256":"8e3cdd44ae39f4b030522ce321399adaa32dc2710fc1a0d2697533e98ed4356a"}}