{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:SOIK445XTQ4HSAIOUULY3MV7A3","short_pith_number":"pith:SOIK445X","canonical_record":{"source":{"id":"1203.3242","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-15T00:34:58Z","cross_cats_sorted":[],"title_canon_sha256":"c1c348d10d666c7693e18fbc6b3c44020da563440316398c07a95f56e84614d1","abstract_canon_sha256":"002f595029d5eeac3f404bd93fe4dffccafdd17c764958edf2c802b71d7888b5"},"schema_version":"1.0"},"canonical_sha256":"9390ae73b79c3879010ea5178db2bf06d01dc8d7ce1ecf2195f0fedc502a9f9a","source":{"kind":"arxiv","id":"1203.3242","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.3242","created_at":"2026-05-18T01:58:08Z"},{"alias_kind":"arxiv_version","alias_value":"1203.3242v1","created_at":"2026-05-18T01:58:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.3242","created_at":"2026-05-18T01:58:08Z"},{"alias_kind":"pith_short_12","alias_value":"SOIK445XTQ4H","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"SOIK445XTQ4HSAIO","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"SOIK445X","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:SOIK445XTQ4HSAIOUULY3MV7A3","target":"record","payload":{"canonical_record":{"source":{"id":"1203.3242","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-15T00:34:58Z","cross_cats_sorted":[],"title_canon_sha256":"c1c348d10d666c7693e18fbc6b3c44020da563440316398c07a95f56e84614d1","abstract_canon_sha256":"002f595029d5eeac3f404bd93fe4dffccafdd17c764958edf2c802b71d7888b5"},"schema_version":"1.0"},"canonical_sha256":"9390ae73b79c3879010ea5178db2bf06d01dc8d7ce1ecf2195f0fedc502a9f9a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:08.582254Z","signature_b64":"ltiV88qSSDoG8fvJstGAfKnKZu8qQ1UYAblyu7uW7VdOkxqLFjxnYv5iw8nWwcLBzsc3NoDk2Z1IdGofhhwRDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9390ae73b79c3879010ea5178db2bf06d01dc8d7ce1ecf2195f0fedc502a9f9a","last_reissued_at":"2026-05-18T01:58:08.581655Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:08.581655Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.3242","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":"2026-05-18T01:58:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tymKPGiFP/7plaD6Y0t7W/rCghMbihXx0fguIbmmrbYgTULrdo6/BYv2urjiERvwnlP3yLV/y8xRsE5XIVCvBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T07:10:34.143136Z"},"content_sha256":"6528a86c5ac201ec84049fda4f12b2551a950faf7eebdc8ed64a920126e59fbc","schema_version":"1.0","event_id":"sha256:6528a86c5ac201ec84049fda4f12b2551a950faf7eebdc8ed64a920126e59fbc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:SOIK445XTQ4HSAIOUULY3MV7A3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Soft coronal X-rays from \\beta{} Pictoris","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. M. Lisse, H. M. G\\\"unther, J. H. M. M. Schmitt, J. J. Drake, J. Robrade, S. J. Wolk","submitted_at":"2012-03-15T00:34:58Z","abstract_excerpt":"A type stars are expected to be X-ray dark, yet weak emission has been detected from several objects in this class. We present new Chandra/HRC-I observations of the A5 V star \\beta{} Pictoris. It is clearly detected with a flux of 9+-2 10^{-4} counts/s. In comparison with previous data this constrains the emission mechanism and we find that the most likely explanation is an optically thin, collisionally dominated, thermal emission component with a temperature around 1.1 MK. We interpret this component as a very cool and dim corona, with \\log L_X/L_{bol}=-8.2 (0.2-2.0 keV). Thus, it seems that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.3242","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":"2026-05-18T01:58:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"57FaTYXtQVFZEEgCfioy/LeO6h3FaVFaCpORLyISY3jlt4xp4JkJxmFbNXnkCz7h7q9XfZ5G+9HMKTEsfY+TBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T07:10:34.143563Z"},"content_sha256":"8b7183a8e72701a18a97802e273198544797eff9fd9bad57d01c50c5c3543d39","schema_version":"1.0","event_id":"sha256:8b7183a8e72701a18a97802e273198544797eff9fd9bad57d01c50c5c3543d39"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SOIK445XTQ4HSAIOUULY3MV7A3/bundle.json","state_url":"https://pith.science/pith/SOIK445XTQ4HSAIOUULY3MV7A3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SOIK445XTQ4HSAIOUULY3MV7A3/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":"2026-06-04T07:10:34Z","links":{"resolver":"https://pith.science/pith/SOIK445XTQ4HSAIOUULY3MV7A3","bundle":"https://pith.science/pith/SOIK445XTQ4HSAIOUULY3MV7A3/bundle.json","state":"https://pith.science/pith/SOIK445XTQ4HSAIOUULY3MV7A3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SOIK445XTQ4HSAIOUULY3MV7A3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:SOIK445XTQ4HSAIOUULY3MV7A3","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":"002f595029d5eeac3f404bd93fe4dffccafdd17c764958edf2c802b71d7888b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-15T00:34:58Z","title_canon_sha256":"c1c348d10d666c7693e18fbc6b3c44020da563440316398c07a95f56e84614d1"},"schema_version":"1.0","source":{"id":"1203.3242","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.3242","created_at":"2026-05-18T01:58:08Z"},{"alias_kind":"arxiv_version","alias_value":"1203.3242v1","created_at":"2026-05-18T01:58:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.3242","created_at":"2026-05-18T01:58:08Z"},{"alias_kind":"pith_short_12","alias_value":"SOIK445XTQ4H","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"SOIK445XTQ4HSAIO","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"SOIK445X","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:8b7183a8e72701a18a97802e273198544797eff9fd9bad57d01c50c5c3543d39","target":"graph","created_at":"2026-05-18T01:58:08Z","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":"A type stars are expected to be X-ray dark, yet weak emission has been detected from several objects in this class. We present new Chandra/HRC-I observations of the A5 V star \\beta{} Pictoris. It is clearly detected with a flux of 9+-2 10^{-4} counts/s. In comparison with previous data this constrains the emission mechanism and we find that the most likely explanation is an optically thin, collisionally dominated, thermal emission component with a temperature around 1.1 MK. We interpret this component as a very cool and dim corona, with \\log L_X/L_{bol}=-8.2 (0.2-2.0 keV). Thus, it seems that ","authors_text":"C. M. Lisse, H. M. G\\\"unther, J. H. M. M. Schmitt, J. J. Drake, J. Robrade, S. J. Wolk","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-15T00:34:58Z","title":"Soft coronal X-rays from \\beta{} Pictoris"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.3242","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":"sha256:6528a86c5ac201ec84049fda4f12b2551a950faf7eebdc8ed64a920126e59fbc","target":"record","created_at":"2026-05-18T01:58:08Z","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":"002f595029d5eeac3f404bd93fe4dffccafdd17c764958edf2c802b71d7888b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-15T00:34:58Z","title_canon_sha256":"c1c348d10d666c7693e18fbc6b3c44020da563440316398c07a95f56e84614d1"},"schema_version":"1.0","source":{"id":"1203.3242","kind":"arxiv","version":1}},"canonical_sha256":"9390ae73b79c3879010ea5178db2bf06d01dc8d7ce1ecf2195f0fedc502a9f9a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9390ae73b79c3879010ea5178db2bf06d01dc8d7ce1ecf2195f0fedc502a9f9a","first_computed_at":"2026-05-18T01:58:08.581655Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:08.581655Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ltiV88qSSDoG8fvJstGAfKnKZu8qQ1UYAblyu7uW7VdOkxqLFjxnYv5iw8nWwcLBzsc3NoDk2Z1IdGofhhwRDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:08.582254Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.3242","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6528a86c5ac201ec84049fda4f12b2551a950faf7eebdc8ed64a920126e59fbc","sha256:8b7183a8e72701a18a97802e273198544797eff9fd9bad57d01c50c5c3543d39"],"state_sha256":"4af2e7cc04cbb3f9905b303231824152280b3cc6492883957ab1741801f94e08"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"INckg/5ipJgQhgSPKkTCk0MQvtCVSSi9cvJRyAJri1i8UwEesUjsND6edE3MIIgXvo8SlX4D/tz+G1nINrQPAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T07:10:34.147287Z","bundle_sha256":"998fbb82aef0a74fc6cb866581dc96630acc495ab412a42102d860ffaccbaaad"}}