{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1997:Y4THHZ6HUBWARDEGOEXNROZVGZ","short_pith_number":"pith:Y4THHZ6H","canonical_record":{"source":{"id":"astro-ph/9712018","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1997-12-01T22:22:01Z","cross_cats_sorted":[],"title_canon_sha256":"5f75366a664b5f8b107a853520dd6acd2c95dd1d8eba734a31bfdf813684cb59","abstract_canon_sha256":"8fed2348652682311ba6b09f2d6d38e70c82eea15a33f80775c3632e7060b962"},"schema_version":"1.0"},"canonical_sha256":"c72673e7c7a06c088c86712ed8bb35364776d61290a9c5555204f96670296253","source":{"kind":"arxiv","id":"astro-ph/9712018","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9712018","created_at":"2026-05-18T01:40:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9712018v1","created_at":"2026-05-18T01:40:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9712018","created_at":"2026-05-18T01:40:14Z"},{"alias_kind":"pith_short_12","alias_value":"Y4THHZ6HUBWA","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"Y4THHZ6HUBWARDEG","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"Y4THHZ6H","created_at":"2026-05-18T12:25:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1997:Y4THHZ6HUBWARDEGOEXNROZVGZ","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9712018","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1997-12-01T22:22:01Z","cross_cats_sorted":[],"title_canon_sha256":"5f75366a664b5f8b107a853520dd6acd2c95dd1d8eba734a31bfdf813684cb59","abstract_canon_sha256":"8fed2348652682311ba6b09f2d6d38e70c82eea15a33f80775c3632e7060b962"},"schema_version":"1.0"},"canonical_sha256":"c72673e7c7a06c088c86712ed8bb35364776d61290a9c5555204f96670296253","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:14.836845Z","signature_b64":"IowHRtka7b1IulPMX2re9eBgLCly/UbqdEjYz63FacfbWUlZzMvZkng1o1+16gKDLbIIcYvI0Kg/i7eozaz+Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c72673e7c7a06c088c86712ed8bb35364776d61290a9c5555204f96670296253","last_reissued_at":"2026-05-18T01:40:14.836366Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:14.836366Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9712018","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":"2026-05-18T01:40:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JKW0JmQeVTOtU2aoPKPynmBv107aUKMvGbxQ6+Ues7dVAidkkP1JVh5zYmsSC0AWU5XoSwkucE3PNGz9ViTRAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T01:12:06.835358Z"},"content_sha256":"61c156687d34ad33248071ddf89514c6053f4c05261a0ce47cf01307e941f23e","schema_version":"1.0","event_id":"sha256:61c156687d34ad33248071ddf89514c6053f4c05261a0ce47cf01307e941f23e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1997:Y4THHZ6HUBWARDEGOEXNROZVGZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Orbital Parameters for the Soft X-ray Transient 4U 1543-47: Evidence for a Black Hole","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Yale University, (3) Harvard-Smithsonian Center for Astrophysics, (4) Massachusetts Institute of Technology), Charles D. Bailyn (2), Jeffrey E. McClintock (3), Jerome A. Orosz (1), Raj K. Jain, Ronald A. Remillard (4) ((1) The Pennsylvania State University","submitted_at":"1997-12-01T22:22:01Z","abstract_excerpt":"(shortened) Spectroscopic observations of the soft X-ray transient 4U 1543-47 reveal a radial velocity curve with a period of P=1.123 +/- 0.008 days and a semi-amplitude of K_2 = 124 +/- 4 km/sec. The mass function is f(M) = 0.22 +/- 0.02 solar masses. We derive a distance of d = 9.1 +/-1.1 kpc if the secondary is on the main sequence. The V and I light curves exhibit two waves per orbital cycle with amplitudes of about 0.08 mag. We modeled the light curves as ellipsoidal variations in the secondary star and derive extreme inclination limits of 20 <= i <= 40 deg and formal 3 sigma limits of 24"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9712018","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":"2026-05-18T01:40:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l2UmD7/zuhYXSgG8T3S43c0aTOkwkxC0/c/WlehJ0fBSkfH3ICgxKicYtEvs9fbJqkura4WIxs97v+OwnFUXBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T01:12:06.835710Z"},"content_sha256":"918cc4124f5d4a2e6d7c2fd242b6db1a24d8901dea1edd299d393184d12636da","schema_version":"1.0","event_id":"sha256:918cc4124f5d4a2e6d7c2fd242b6db1a24d8901dea1edd299d393184d12636da"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y4THHZ6HUBWARDEGOEXNROZVGZ/bundle.json","state_url":"https://pith.science/pith/Y4THHZ6HUBWARDEGOEXNROZVGZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y4THHZ6HUBWARDEGOEXNROZVGZ/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":"2026-05-28T01:12:06Z","links":{"resolver":"https://pith.science/pith/Y4THHZ6HUBWARDEGOEXNROZVGZ","bundle":"https://pith.science/pith/Y4THHZ6HUBWARDEGOEXNROZVGZ/bundle.json","state":"https://pith.science/pith/Y4THHZ6HUBWARDEGOEXNROZVGZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y4THHZ6HUBWARDEGOEXNROZVGZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:Y4THHZ6HUBWARDEGOEXNROZVGZ","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":"8fed2348652682311ba6b09f2d6d38e70c82eea15a33f80775c3632e7060b962","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-12-01T22:22:01Z","title_canon_sha256":"5f75366a664b5f8b107a853520dd6acd2c95dd1d8eba734a31bfdf813684cb59"},"schema_version":"1.0","source":{"id":"astro-ph/9712018","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9712018","created_at":"2026-05-18T01:40:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9712018v1","created_at":"2026-05-18T01:40:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9712018","created_at":"2026-05-18T01:40:14Z"},{"alias_kind":"pith_short_12","alias_value":"Y4THHZ6HUBWA","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"Y4THHZ6HUBWARDEG","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"Y4THHZ6H","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:918cc4124f5d4a2e6d7c2fd242b6db1a24d8901dea1edd299d393184d12636da","target":"graph","created_at":"2026-05-18T01:40:14Z","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":"(shortened) Spectroscopic observations of the soft X-ray transient 4U 1543-47 reveal a radial velocity curve with a period of P=1.123 +/- 0.008 days and a semi-amplitude of K_2 = 124 +/- 4 km/sec. The mass function is f(M) = 0.22 +/- 0.02 solar masses. We derive a distance of d = 9.1 +/-1.1 kpc if the secondary is on the main sequence. The V and I light curves exhibit two waves per orbital cycle with amplitudes of about 0.08 mag. We modeled the light curves as ellipsoidal variations in the secondary star and derive extreme inclination limits of 20 <= i <= 40 deg and formal 3 sigma limits of 24","authors_text":"(2) Yale University, (3) Harvard-Smithsonian Center for Astrophysics, (4) Massachusetts Institute of Technology), Charles D. Bailyn (2), Jeffrey E. McClintock (3), Jerome A. Orosz (1), Raj K. Jain, Ronald A. Remillard (4) ((1) The Pennsylvania State University","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1997-12-01T22:22:01Z","title":"Orbital Parameters for the Soft X-ray Transient 4U 1543-47: Evidence for a Black Hole"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9712018","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":"sha256:61c156687d34ad33248071ddf89514c6053f4c05261a0ce47cf01307e941f23e","target":"record","created_at":"2026-05-18T01:40:14Z","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":"8fed2348652682311ba6b09f2d6d38e70c82eea15a33f80775c3632e7060b962","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-12-01T22:22:01Z","title_canon_sha256":"5f75366a664b5f8b107a853520dd6acd2c95dd1d8eba734a31bfdf813684cb59"},"schema_version":"1.0","source":{"id":"astro-ph/9712018","kind":"arxiv","version":1}},"canonical_sha256":"c72673e7c7a06c088c86712ed8bb35364776d61290a9c5555204f96670296253","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c72673e7c7a06c088c86712ed8bb35364776d61290a9c5555204f96670296253","first_computed_at":"2026-05-18T01:40:14.836366Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:14.836366Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IowHRtka7b1IulPMX2re9eBgLCly/UbqdEjYz63FacfbWUlZzMvZkng1o1+16gKDLbIIcYvI0Kg/i7eozaz+Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:14.836845Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9712018","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:61c156687d34ad33248071ddf89514c6053f4c05261a0ce47cf01307e941f23e","sha256:918cc4124f5d4a2e6d7c2fd242b6db1a24d8901dea1edd299d393184d12636da"],"state_sha256":"ac2a12bc377d387dd0ec3f939c125829807f1568d2496c6e8b1b6e51e62575cb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pnlCzBULTLo7ndH3o/6tEmBWko2HakoOrAwkUADMHBsOnQFdioL1W25WwXpb+tzZStEr2ndcFscmFdTlZ4vnBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T01:12:06.837735Z","bundle_sha256":"3bc3f6db5b4ff9c5b6bb3f86bb3b1022f0fb083c3f98cd521125bade9e6552f3"}}