{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:SZUR3RYWUOXZQGZZQ737C446H6","short_pith_number":"pith:SZUR3RYW","canonical_record":{"source":{"id":"1011.5235","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-11-23T21:14:22Z","cross_cats_sorted":[],"title_canon_sha256":"f129293a7224663a36c994fdc0a5c80e1de935a4565a42122231f3e7b9ff72cd","abstract_canon_sha256":"9476a7229259900ebdd0aba007cc94533dafad4b570937077b167db283089b65"},"schema_version":"1.0"},"canonical_sha256":"96691dc716a3af981b3987f7f1739e3faa059636c5db28e9b3e915675e9c7209","source":{"kind":"arxiv","id":"1011.5235","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.5235","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"arxiv_version","alias_value":"1011.5235v1","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.5235","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"pith_short_12","alias_value":"SZUR3RYWUOXZ","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"SZUR3RYWUOXZQGZZ","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"SZUR3RYW","created_at":"2026-05-18T12:26:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:SZUR3RYWUOXZQGZZQ737C446H6","target":"record","payload":{"canonical_record":{"source":{"id":"1011.5235","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-11-23T21:14:22Z","cross_cats_sorted":[],"title_canon_sha256":"f129293a7224663a36c994fdc0a5c80e1de935a4565a42122231f3e7b9ff72cd","abstract_canon_sha256":"9476a7229259900ebdd0aba007cc94533dafad4b570937077b167db283089b65"},"schema_version":"1.0"},"canonical_sha256":"96691dc716a3af981b3987f7f1739e3faa059636c5db28e9b3e915675e9c7209","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:41.638506Z","signature_b64":"L2owmbyDAQY0CEpgx99GoNO8ivsFaUcM7dVAGBsrfcca3MK5UT5moqjbLZ6wY9KzfOvyS/SMSi6MRM73ETffBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"96691dc716a3af981b3987f7f1739e3faa059636c5db28e9b3e915675e9c7209","last_reissued_at":"2026-05-18T02:04:41.637771Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:41.637771Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1011.5235","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":"2026-05-18T02:04:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M/uRDbEUHvT0wgvNxo5oSoMTGJDdTyiOX3MpGVuS+Xyrsb4pBnYEIFlfGKDkKw4ueegyi2yoTKfG7f3kj+KIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T17:34:50.191444Z"},"content_sha256":"e1c14343b4b619e0030f07c8b1d9831d67a66ea0fa2ebc7ed437167f296259ba","schema_version":"1.0","event_id":"sha256:e1c14343b4b619e0030f07c8b1d9831d67a66ea0fa2ebc7ed437167f296259ba"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:SZUR3RYWUOXZQGZZQ737C446H6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A stellar prominence in the white dwarf/red dwarf binary QS Vir: evidence for a detached system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. T. G\\\"ansicke, C. Tappert, S. G. Parsons, T. R. Marsh","submitted_at":"2010-11-23T21:14:22Z","abstract_excerpt":"Using high resolution UVES spectra of the eclipsing Post Common Envelope Binary QS Vir we detect material along the line of sight to the white dwarf at orbital phase $\\phi=0.16$. We ascribe this to a stellar prominence originating from the M dwarf secondary star which passes in front of the white dwarf at this phase. This creates sharp absorption features in the hydrogen Balmer series and Ca II H and K lines. The small size of the white dwarf allows us to place tight constraints on the column density of hydrogen in the n=2 level of log_(10)(N_2) = 14.10 +/- 0.03 cm^(-2) and, assuming local the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.5235","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":"2026-05-18T02:04:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wzh8Wbh20d292e5stD7ru8atavx9UeU/4QJ8BjG0wpdUiW5D1kFP6a+PAPievsIZ6zLq+pDVKJOCCc8glIAMCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T17:34:50.192108Z"},"content_sha256":"66b1bce775943225a9019775d2a1577e17aa8b8b68de1ad6b7eb7d37208cd5a0","schema_version":"1.0","event_id":"sha256:66b1bce775943225a9019775d2a1577e17aa8b8b68de1ad6b7eb7d37208cd5a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SZUR3RYWUOXZQGZZQ737C446H6/bundle.json","state_url":"https://pith.science/pith/SZUR3RYWUOXZQGZZQ737C446H6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SZUR3RYWUOXZQGZZQ737C446H6/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":"2026-05-31T17:34:50Z","links":{"resolver":"https://pith.science/pith/SZUR3RYWUOXZQGZZQ737C446H6","bundle":"https://pith.science/pith/SZUR3RYWUOXZQGZZQ737C446H6/bundle.json","state":"https://pith.science/pith/SZUR3RYWUOXZQGZZQ737C446H6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SZUR3RYWUOXZQGZZQ737C446H6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:SZUR3RYWUOXZQGZZQ737C446H6","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":"9476a7229259900ebdd0aba007cc94533dafad4b570937077b167db283089b65","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-11-23T21:14:22Z","title_canon_sha256":"f129293a7224663a36c994fdc0a5c80e1de935a4565a42122231f3e7b9ff72cd"},"schema_version":"1.0","source":{"id":"1011.5235","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.5235","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"arxiv_version","alias_value":"1011.5235v1","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.5235","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"pith_short_12","alias_value":"SZUR3RYWUOXZ","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"SZUR3RYWUOXZQGZZ","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"SZUR3RYW","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:66b1bce775943225a9019775d2a1577e17aa8b8b68de1ad6b7eb7d37208cd5a0","target":"graph","created_at":"2026-05-18T02:04:41Z","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":"Using high resolution UVES spectra of the eclipsing Post Common Envelope Binary QS Vir we detect material along the line of sight to the white dwarf at orbital phase $\\phi=0.16$. We ascribe this to a stellar prominence originating from the M dwarf secondary star which passes in front of the white dwarf at this phase. This creates sharp absorption features in the hydrogen Balmer series and Ca II H and K lines. The small size of the white dwarf allows us to place tight constraints on the column density of hydrogen in the n=2 level of log_(10)(N_2) = 14.10 +/- 0.03 cm^(-2) and, assuming local the","authors_text":"B. T. G\\\"ansicke, C. Tappert, S. G. Parsons, T. R. Marsh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-11-23T21:14:22Z","title":"A stellar prominence in the white dwarf/red dwarf binary QS Vir: evidence for a detached system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.5235","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:e1c14343b4b619e0030f07c8b1d9831d67a66ea0fa2ebc7ed437167f296259ba","target":"record","created_at":"2026-05-18T02:04:41Z","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":"9476a7229259900ebdd0aba007cc94533dafad4b570937077b167db283089b65","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-11-23T21:14:22Z","title_canon_sha256":"f129293a7224663a36c994fdc0a5c80e1de935a4565a42122231f3e7b9ff72cd"},"schema_version":"1.0","source":{"id":"1011.5235","kind":"arxiv","version":1}},"canonical_sha256":"96691dc716a3af981b3987f7f1739e3faa059636c5db28e9b3e915675e9c7209","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"96691dc716a3af981b3987f7f1739e3faa059636c5db28e9b3e915675e9c7209","first_computed_at":"2026-05-18T02:04:41.637771Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:41.637771Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L2owmbyDAQY0CEpgx99GoNO8ivsFaUcM7dVAGBsrfcca3MK5UT5moqjbLZ6wY9KzfOvyS/SMSi6MRM73ETffBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:41.638506Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.5235","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e1c14343b4b619e0030f07c8b1d9831d67a66ea0fa2ebc7ed437167f296259ba","sha256:66b1bce775943225a9019775d2a1577e17aa8b8b68de1ad6b7eb7d37208cd5a0"],"state_sha256":"16c2ecf9b677f28e3975bfdcfc18f077e7d7a18694c557ccbceccb8366889f07"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/jk1SFc+Gts/VocXcaSdMRrr6p8TcPGy0Z2Dm7C1iW/Fy1XkrtC1PEQXQV9UDkMRVjgasY1ZGEs9oS8daLZTDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T17:34:50.196249Z","bundle_sha256":"ffe7b9f6f9ce1020eee6fd84cc0a1f630c54b312dbae0786d1ed58edb5846330"}}