{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:UDTCRAZTLUXYF4FYQLCJJ3OGH2","short_pith_number":"pith:UDTCRAZT","canonical_record":{"source":{"id":"astro-ph/0309164","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-09-05T00:40:41Z","cross_cats_sorted":[],"title_canon_sha256":"29f994d4186041a6406e3f9c6e6c3c65a437d43ab916117c5307ef23b1b933ec","abstract_canon_sha256":"e3fd83721d9bb253376fe111c634e96f986f7917c5697eb526243b3fdf3767ba"},"schema_version":"1.0"},"canonical_sha256":"a0e62883335d2f82f0b882c494edc63ea1c779eee6defc6df18c92b6f8c65f6e","source":{"kind":"arxiv","id":"astro-ph/0309164","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0309164","created_at":"2026-05-18T01:40:38Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0309164v1","created_at":"2026-05-18T01:40:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0309164","created_at":"2026-05-18T01:40:38Z"},{"alias_kind":"pith_short_12","alias_value":"UDTCRAZTLUXY","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"UDTCRAZTLUXYF4FY","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"UDTCRAZT","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:UDTCRAZTLUXYF4FYQLCJJ3OGH2","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0309164","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-09-05T00:40:41Z","cross_cats_sorted":[],"title_canon_sha256":"29f994d4186041a6406e3f9c6e6c3c65a437d43ab916117c5307ef23b1b933ec","abstract_canon_sha256":"e3fd83721d9bb253376fe111c634e96f986f7917c5697eb526243b3fdf3767ba"},"schema_version":"1.0"},"canonical_sha256":"a0e62883335d2f82f0b882c494edc63ea1c779eee6defc6df18c92b6f8c65f6e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:38.266877Z","signature_b64":"q1UxU0kgIRONfA/ND9f8nFnLqJmv+nKUiPiKbj6powCM+BWODY1GuK1elac35+5Iukxb5daka5I/fMVjUWUQAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a0e62883335d2f82f0b882c494edc63ea1c779eee6defc6df18c92b6f8c65f6e","last_reissued_at":"2026-05-18T01:40:38.266269Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:38.266269Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0309164","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":"2026-05-18T01:40:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XhVVJkRivXmPgMEKa7TaxpyvbrZa3KssdY8uNGFaMdujChaRAa8eMRsi0EZV/eSvp0ujVXdeVwf+NdoLOpOHBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:49:08.599572Z"},"content_sha256":"24cd078796d9a5a8ba70c364a668cd7a2bf023158d0a9184e7972b4b068faa1b","schema_version":"1.0","event_id":"sha256:24cd078796d9a5a8ba70c364a668cd7a2bf023158d0a9184e7972b4b068faa1b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:UDTCRAZTLUXYF4FYQLCJJ3OGH2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chandra Observations of a Young Embedded Magnetic B Star in the rho Ophiuchus Cloud","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Kenji Hamaguchi, Kensuke Imanishi, Michael F. Corcoran","submitted_at":"2003-09-05T00:40:41Z","abstract_excerpt":"This paper reports on an analysis of two Chandra X-ray observations of the young magnetic B star rho Ophiuchus S1. X-ray emission from the star was detected in both observations. The average flux was almost the same in both, but during each observation the flux showed significant time variations by a factor of two on timescales of 20-40 ks. Each spectrum could be fit by either an absorbed power-law model with a photon index of ~3 or a thin-thermal plasma model with a temperature of ~2 keV and an extremely low metal abundance (<~0.1 solar). The spectrum of the first observation has a weak-line "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0309164","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":"2026-05-18T01:40:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uFH1vNyF3yT1tBH1fY8JKSx53eMZskSqeQ1I23/+zguxJ1H4MGhYoSbcbsO9Si7tFU/fifpnytCal6EAclmGBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:49:08.599942Z"},"content_sha256":"0a75237bdb2faa20df1d16e577f690205e01772c66052c838058571375dc89d4","schema_version":"1.0","event_id":"sha256:0a75237bdb2faa20df1d16e577f690205e01772c66052c838058571375dc89d4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UDTCRAZTLUXYF4FYQLCJJ3OGH2/bundle.json","state_url":"https://pith.science/pith/UDTCRAZTLUXYF4FYQLCJJ3OGH2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UDTCRAZTLUXYF4FYQLCJJ3OGH2/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":"2026-06-01T15:49:08Z","links":{"resolver":"https://pith.science/pith/UDTCRAZTLUXYF4FYQLCJJ3OGH2","bundle":"https://pith.science/pith/UDTCRAZTLUXYF4FYQLCJJ3OGH2/bundle.json","state":"https://pith.science/pith/UDTCRAZTLUXYF4FYQLCJJ3OGH2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UDTCRAZTLUXYF4FYQLCJJ3OGH2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:UDTCRAZTLUXYF4FYQLCJJ3OGH2","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":"e3fd83721d9bb253376fe111c634e96f986f7917c5697eb526243b3fdf3767ba","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-09-05T00:40:41Z","title_canon_sha256":"29f994d4186041a6406e3f9c6e6c3c65a437d43ab916117c5307ef23b1b933ec"},"schema_version":"1.0","source":{"id":"astro-ph/0309164","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0309164","created_at":"2026-05-18T01:40:38Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0309164v1","created_at":"2026-05-18T01:40:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0309164","created_at":"2026-05-18T01:40:38Z"},{"alias_kind":"pith_short_12","alias_value":"UDTCRAZTLUXY","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"UDTCRAZTLUXYF4FY","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"UDTCRAZT","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:0a75237bdb2faa20df1d16e577f690205e01772c66052c838058571375dc89d4","target":"graph","created_at":"2026-05-18T01:40:38Z","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":"This paper reports on an analysis of two Chandra X-ray observations of the young magnetic B star rho Ophiuchus S1. X-ray emission from the star was detected in both observations. The average flux was almost the same in both, but during each observation the flux showed significant time variations by a factor of two on timescales of 20-40 ks. Each spectrum could be fit by either an absorbed power-law model with a photon index of ~3 or a thin-thermal plasma model with a temperature of ~2 keV and an extremely low metal abundance (<~0.1 solar). The spectrum of the first observation has a weak-line ","authors_text":"Kenji Hamaguchi, Kensuke Imanishi, Michael F. Corcoran","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-09-05T00:40:41Z","title":"Chandra Observations of a Young Embedded Magnetic B Star in the rho Ophiuchus Cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0309164","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":"sha256:24cd078796d9a5a8ba70c364a668cd7a2bf023158d0a9184e7972b4b068faa1b","target":"record","created_at":"2026-05-18T01:40:38Z","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":"e3fd83721d9bb253376fe111c634e96f986f7917c5697eb526243b3fdf3767ba","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-09-05T00:40:41Z","title_canon_sha256":"29f994d4186041a6406e3f9c6e6c3c65a437d43ab916117c5307ef23b1b933ec"},"schema_version":"1.0","source":{"id":"astro-ph/0309164","kind":"arxiv","version":1}},"canonical_sha256":"a0e62883335d2f82f0b882c494edc63ea1c779eee6defc6df18c92b6f8c65f6e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a0e62883335d2f82f0b882c494edc63ea1c779eee6defc6df18c92b6f8c65f6e","first_computed_at":"2026-05-18T01:40:38.266269Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:38.266269Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"q1UxU0kgIRONfA/ND9f8nFnLqJmv+nKUiPiKbj6powCM+BWODY1GuK1elac35+5Iukxb5daka5I/fMVjUWUQAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:38.266877Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0309164","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:24cd078796d9a5a8ba70c364a668cd7a2bf023158d0a9184e7972b4b068faa1b","sha256:0a75237bdb2faa20df1d16e577f690205e01772c66052c838058571375dc89d4"],"state_sha256":"53f68eee86909b6433b19160aa8f2a03cedae8088d6f5c5d11c7e65b9092637e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UhpnwF1mjzb6hc24SXPUJYiLCxESSBSB+lMDYd+g0YO3WXK981u3uL3aSC3bdtgv/5xaTscmBwTTQxlweBaVAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T15:49:08.602707Z","bundle_sha256":"b025456b878e620e8c5c697d69fa0d01e67143078c473c285c94b83b8538bdec"}}