{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:R2QEOWK4OOVCWMJNSQF2CDIIJX","short_pith_number":"pith:R2QEOWK4","canonical_record":{"source":{"id":"0806.3888","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-06-24T13:29:09Z","cross_cats_sorted":[],"title_canon_sha256":"5ff9e81532250effeb6bb50c28fce20ee80d725c5607f56fd0850ed25953e7f1","abstract_canon_sha256":"32f77dcd50ad50146bfc97c2b447673b1253b01840b26522c91b63557ddbbf8c"},"schema_version":"1.0"},"canonical_sha256":"8ea047595c73aa2b312d940ba10d084dc53d95ce6f44ba6454e51e81a312115f","source":{"kind":"arxiv","id":"0806.3888","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0806.3888","created_at":"2026-05-18T04:24:45Z"},{"alias_kind":"arxiv_version","alias_value":"0806.3888v1","created_at":"2026-05-18T04:24:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0806.3888","created_at":"2026-05-18T04:24:45Z"},{"alias_kind":"pith_short_12","alias_value":"R2QEOWK4OOVC","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"R2QEOWK4OOVCWMJN","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"R2QEOWK4","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:R2QEOWK4OOVCWMJNSQF2CDIIJX","target":"record","payload":{"canonical_record":{"source":{"id":"0806.3888","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-06-24T13:29:09Z","cross_cats_sorted":[],"title_canon_sha256":"5ff9e81532250effeb6bb50c28fce20ee80d725c5607f56fd0850ed25953e7f1","abstract_canon_sha256":"32f77dcd50ad50146bfc97c2b447673b1253b01840b26522c91b63557ddbbf8c"},"schema_version":"1.0"},"canonical_sha256":"8ea047595c73aa2b312d940ba10d084dc53d95ce6f44ba6454e51e81a312115f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:24:45.559665Z","signature_b64":"AFaEgZdP0HNXjdfGxc59NKCthiTrYn9XAhK6PiLzLRiIj/8SRkECpFIJ9GM4A56Y/cw3qZvVkHi7+RVbSpcMAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8ea047595c73aa2b312d940ba10d084dc53d95ce6f44ba6454e51e81a312115f","last_reissued_at":"2026-05-18T04:24:45.559009Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:24:45.559009Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0806.3888","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":"2026-05-18T04:24:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ofnl8Sjf8OZ/M9K3T5yuQq5R+HUqQtbmS5ZJcJ6OLjcZKg5ASTfWYEgLVoJ41Wq8ehrkQC1HSzjS0pyLgGX6Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T14:41:27.469436Z"},"content_sha256":"3923d3764be1c8b0923bc44b72e637bced7286341c335fc5f0bb7ef6b6f1c742","schema_version":"1.0","event_id":"sha256:3923d3764be1c8b0923bc44b72e637bced7286341c335fc5f0bb7ef6b6f1c742"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:R2QEOWK4OOVCWMJNSQF2CDIIJX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Faint Galactic X-ray Binaries","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"CfA), D. Steeghs (Warwick, M.A.P. Torres (CfA), P.G. Jonker (SRON & CfA)","submitted_at":"2008-06-24T13:29:09Z","abstract_excerpt":"We present a short overview of the properties of faint Galactic X-ray binaries. We place emphasis on current classification scenarios. One of the important parameters for the faint sources is their intrinsic luminosity. In the case of low-mass X-ray binaries it has recently been realised that besides a phase of radius expansion, the duration of type I X-ray bursts can be used as a primer for the source luminosity in some cases. Further, we show that a very low equivalent width of hydrogen and helium emission lines in the optical spectrum alone is not a tell-tale sign for an ultra-compact syste"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0806.3888","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":"2026-05-18T04:24:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kPjQGE9tIJrIgA/wmZm/vyZylDcDLWH2P/4j8L7sm4v59vIUYWcSGK+Z+n/0II6zO6ZRP+ug613cIyV8DKmSCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T14:41:27.469809Z"},"content_sha256":"fe81beef9696ed5ca3bd8658d3ab08002bbc8d9e8b79d84a25af5c114d7ad610","schema_version":"1.0","event_id":"sha256:fe81beef9696ed5ca3bd8658d3ab08002bbc8d9e8b79d84a25af5c114d7ad610"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R2QEOWK4OOVCWMJNSQF2CDIIJX/bundle.json","state_url":"https://pith.science/pith/R2QEOWK4OOVCWMJNSQF2CDIIJX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R2QEOWK4OOVCWMJNSQF2CDIIJX/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":"2026-06-03T14:41:27Z","links":{"resolver":"https://pith.science/pith/R2QEOWK4OOVCWMJNSQF2CDIIJX","bundle":"https://pith.science/pith/R2QEOWK4OOVCWMJNSQF2CDIIJX/bundle.json","state":"https://pith.science/pith/R2QEOWK4OOVCWMJNSQF2CDIIJX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R2QEOWK4OOVCWMJNSQF2CDIIJX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:R2QEOWK4OOVCWMJNSQF2CDIIJX","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":"32f77dcd50ad50146bfc97c2b447673b1253b01840b26522c91b63557ddbbf8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-06-24T13:29:09Z","title_canon_sha256":"5ff9e81532250effeb6bb50c28fce20ee80d725c5607f56fd0850ed25953e7f1"},"schema_version":"1.0","source":{"id":"0806.3888","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0806.3888","created_at":"2026-05-18T04:24:45Z"},{"alias_kind":"arxiv_version","alias_value":"0806.3888v1","created_at":"2026-05-18T04:24:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0806.3888","created_at":"2026-05-18T04:24:45Z"},{"alias_kind":"pith_short_12","alias_value":"R2QEOWK4OOVC","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"R2QEOWK4OOVCWMJN","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"R2QEOWK4","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:fe81beef9696ed5ca3bd8658d3ab08002bbc8d9e8b79d84a25af5c114d7ad610","target":"graph","created_at":"2026-05-18T04:24:45Z","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 present a short overview of the properties of faint Galactic X-ray binaries. We place emphasis on current classification scenarios. One of the important parameters for the faint sources is their intrinsic luminosity. In the case of low-mass X-ray binaries it has recently been realised that besides a phase of radius expansion, the duration of type I X-ray bursts can be used as a primer for the source luminosity in some cases. Further, we show that a very low equivalent width of hydrogen and helium emission lines in the optical spectrum alone is not a tell-tale sign for an ultra-compact syste","authors_text":"CfA), D. Steeghs (Warwick, M.A.P. Torres (CfA), P.G. Jonker (SRON & CfA)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-06-24T13:29:09Z","title":"Faint Galactic X-ray Binaries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0806.3888","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":"sha256:3923d3764be1c8b0923bc44b72e637bced7286341c335fc5f0bb7ef6b6f1c742","target":"record","created_at":"2026-05-18T04:24:45Z","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":"32f77dcd50ad50146bfc97c2b447673b1253b01840b26522c91b63557ddbbf8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-06-24T13:29:09Z","title_canon_sha256":"5ff9e81532250effeb6bb50c28fce20ee80d725c5607f56fd0850ed25953e7f1"},"schema_version":"1.0","source":{"id":"0806.3888","kind":"arxiv","version":1}},"canonical_sha256":"8ea047595c73aa2b312d940ba10d084dc53d95ce6f44ba6454e51e81a312115f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8ea047595c73aa2b312d940ba10d084dc53d95ce6f44ba6454e51e81a312115f","first_computed_at":"2026-05-18T04:24:45.559009Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:24:45.559009Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AFaEgZdP0HNXjdfGxc59NKCthiTrYn9XAhK6PiLzLRiIj/8SRkECpFIJ9GM4A56Y/cw3qZvVkHi7+RVbSpcMAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:24:45.559665Z","signed_message":"canonical_sha256_bytes"},"source_id":"0806.3888","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3923d3764be1c8b0923bc44b72e637bced7286341c335fc5f0bb7ef6b6f1c742","sha256:fe81beef9696ed5ca3bd8658d3ab08002bbc8d9e8b79d84a25af5c114d7ad610"],"state_sha256":"36e7309d3465377d37fde2a1a515502840264ad95334b03500889119a6d79f23"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gjjxy3PFvqFW/3zhfdvPr4zacGEtBzdhVbwHAShp8EHktZJ4pHuoA6h+xJGH8etMs07WHH5v3drru73QM4WUDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T14:41:27.472043Z","bundle_sha256":"8c52e4232a65b0597c3a33b43efb44e55d3283e3a089b705de9b082b4e515796"}}