{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:TA7AEFU7B6OPBBEB2VZ6CELAZ6","short_pith_number":"pith:TA7AEFU7","canonical_record":{"source":{"id":"1908.01107","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-08-03T02:24:05Z","cross_cats_sorted":[],"title_canon_sha256":"2bb9e4acccc8ab6bde6c9f61ec16ba39a14e767ada4ab04281636317b3c34593","abstract_canon_sha256":"716357d736ad8412f392d47b7e116f20f444e04c6a5ce745be5f0b3f5356fa3a"},"schema_version":"1.0"},"canonical_sha256":"983e02169f0f9cf08481d573e11160cf8cb95ed3781ec0f18b157c966803df28","source":{"kind":"arxiv","id":"1908.01107","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.01107","created_at":"2026-07-05T00:23:06Z"},{"alias_kind":"arxiv_version","alias_value":"1908.01107v3","created_at":"2026-07-05T00:23:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.01107","created_at":"2026-07-05T00:23:06Z"},{"alias_kind":"pith_short_12","alias_value":"TA7AEFU7B6OP","created_at":"2026-07-05T00:23:06Z"},{"alias_kind":"pith_short_16","alias_value":"TA7AEFU7B6OPBBEB","created_at":"2026-07-05T00:23:06Z"},{"alias_kind":"pith_short_8","alias_value":"TA7AEFU7","created_at":"2026-07-05T00:23:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:TA7AEFU7B6OPBBEB2VZ6CELAZ6","target":"record","payload":{"canonical_record":{"source":{"id":"1908.01107","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-08-03T02:24:05Z","cross_cats_sorted":[],"title_canon_sha256":"2bb9e4acccc8ab6bde6c9f61ec16ba39a14e767ada4ab04281636317b3c34593","abstract_canon_sha256":"716357d736ad8412f392d47b7e116f20f444e04c6a5ce745be5f0b3f5356fa3a"},"schema_version":"1.0"},"canonical_sha256":"983e02169f0f9cf08481d573e11160cf8cb95ed3781ec0f18b157c966803df28","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:23:06.527081Z","signature_b64":"1g8ZNCTxV8VAkCJGmgqAW+oKgwdsvSY4jvtmcUGvDOpZQlkwU7pVAuEaU4OXCHs+nzmLGzApRfGF+r0+d+RJCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"983e02169f0f9cf08481d573e11160cf8cb95ed3781ec0f18b157c966803df28","last_reissued_at":"2026-07-05T00:23:06.526588Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:23:06.526588Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.01107","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:23:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Uci4QePZjmZ0Rya3IWhfegFfqUFU8O+y9m6M9gQS5v7FQveGJew85ek1V979WT+Jdr9jbMY2BOc0fuHWS0xSBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:03:47.461504Z"},"content_sha256":"e6ef2768b3dd42e6dc3cfed1bf9de8ae23b3bdcd00728277d4248f6b49c251f3","schema_version":"1.0","event_id":"sha256:e6ef2768b3dd42e6dc3cfed1bf9de8ae23b3bdcd00728277d4248f6b49c251f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:TA7AEFU7B6OPBBEB2VZ6CELAZ6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A unified binary neutron star merger magnetar model for the Chandra X-ray transients CDF-S XT1 and XT2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Binbin Zhang, Bing Zhang, Franz E. Bauer, Hui Sun, Weimin Yuan, Ye Li, Yongquan Xue","submitted_at":"2019-08-03T02:24:05Z","abstract_excerpt":"Two bright X-ray transients were reported from the Chandra Deep Field South archival data, namely CDF-S XT1 and XT2. Whereas the nature of the former is not identified, the latter was suggested as an excellent candidate for a rapidly spinning magnetar born from a binary neutron star (BNS) merger. Here we propose a unified model to interpret both transients within the framework of the BNS merger magnetar model. According to our picture, CDF-S XT2 is observed from the \"free zone\" where the magnetar spindown powered X-ray emission escapes freely, whereas CDF-S XT1 originates from the \"trapped zon"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.01107","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.01107/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:23:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k82i0O6pQFm/fQ0tYbYYOqGwDS3GmjJRuiVFI3hh32li8yN+dWR1MOtBdix0kvHpgX88FT+O91bE5qumEFivDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:03:47.461888Z"},"content_sha256":"7f202b467691590887a6ca779e3e12259a186299ccdf179d1e3c46fa90bf23a0","schema_version":"1.0","event_id":"sha256:7f202b467691590887a6ca779e3e12259a186299ccdf179d1e3c46fa90bf23a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TA7AEFU7B6OPBBEB2VZ6CELAZ6/bundle.json","state_url":"https://pith.science/pith/TA7AEFU7B6OPBBEB2VZ6CELAZ6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TA7AEFU7B6OPBBEB2VZ6CELAZ6/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":"2026-07-07T08:03:47Z","links":{"resolver":"https://pith.science/pith/TA7AEFU7B6OPBBEB2VZ6CELAZ6","bundle":"https://pith.science/pith/TA7AEFU7B6OPBBEB2VZ6CELAZ6/bundle.json","state":"https://pith.science/pith/TA7AEFU7B6OPBBEB2VZ6CELAZ6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TA7AEFU7B6OPBBEB2VZ6CELAZ6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:TA7AEFU7B6OPBBEB2VZ6CELAZ6","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":"716357d736ad8412f392d47b7e116f20f444e04c6a5ce745be5f0b3f5356fa3a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-08-03T02:24:05Z","title_canon_sha256":"2bb9e4acccc8ab6bde6c9f61ec16ba39a14e767ada4ab04281636317b3c34593"},"schema_version":"1.0","source":{"id":"1908.01107","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.01107","created_at":"2026-07-05T00:23:06Z"},{"alias_kind":"arxiv_version","alias_value":"1908.01107v3","created_at":"2026-07-05T00:23:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.01107","created_at":"2026-07-05T00:23:06Z"},{"alias_kind":"pith_short_12","alias_value":"TA7AEFU7B6OP","created_at":"2026-07-05T00:23:06Z"},{"alias_kind":"pith_short_16","alias_value":"TA7AEFU7B6OPBBEB","created_at":"2026-07-05T00:23:06Z"},{"alias_kind":"pith_short_8","alias_value":"TA7AEFU7","created_at":"2026-07-05T00:23:06Z"}],"graph_snapshots":[{"event_id":"sha256:7f202b467691590887a6ca779e3e12259a186299ccdf179d1e3c46fa90bf23a0","target":"graph","created_at":"2026-07-05T00:23:06Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1908.01107/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Two bright X-ray transients were reported from the Chandra Deep Field South archival data, namely CDF-S XT1 and XT2. Whereas the nature of the former is not identified, the latter was suggested as an excellent candidate for a rapidly spinning magnetar born from a binary neutron star (BNS) merger. Here we propose a unified model to interpret both transients within the framework of the BNS merger magnetar model. According to our picture, CDF-S XT2 is observed from the \"free zone\" where the magnetar spindown powered X-ray emission escapes freely, whereas CDF-S XT1 originates from the \"trapped zon","authors_text":"Binbin Zhang, Bing Zhang, Franz E. Bauer, Hui Sun, Weimin Yuan, Ye Li, Yongquan Xue","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-08-03T02:24:05Z","title":"A unified binary neutron star merger magnetar model for the Chandra X-ray transients CDF-S XT1 and XT2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.01107","kind":"arxiv","version":3},"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:e6ef2768b3dd42e6dc3cfed1bf9de8ae23b3bdcd00728277d4248f6b49c251f3","target":"record","created_at":"2026-07-05T00:23:06Z","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":"716357d736ad8412f392d47b7e116f20f444e04c6a5ce745be5f0b3f5356fa3a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-08-03T02:24:05Z","title_canon_sha256":"2bb9e4acccc8ab6bde6c9f61ec16ba39a14e767ada4ab04281636317b3c34593"},"schema_version":"1.0","source":{"id":"1908.01107","kind":"arxiv","version":3}},"canonical_sha256":"983e02169f0f9cf08481d573e11160cf8cb95ed3781ec0f18b157c966803df28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"983e02169f0f9cf08481d573e11160cf8cb95ed3781ec0f18b157c966803df28","first_computed_at":"2026-07-05T00:23:06.526588Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:23:06.526588Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1g8ZNCTxV8VAkCJGmgqAW+oKgwdsvSY4jvtmcUGvDOpZQlkwU7pVAuEaU4OXCHs+nzmLGzApRfGF+r0+d+RJCA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:23:06.527081Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.01107","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e6ef2768b3dd42e6dc3cfed1bf9de8ae23b3bdcd00728277d4248f6b49c251f3","sha256:7f202b467691590887a6ca779e3e12259a186299ccdf179d1e3c46fa90bf23a0"],"state_sha256":"46a57883c8525d2c909f83a3bfc6092efdf2950df17844b9013d6967480c9316"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xFH3/cH25lusuBzL8o1DRW6z9a/SfOlCoSOLoRlHauG6Whx7DTuzTiaLwpvon7GcpuO0hQAcx4WG4GeB8t0MCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T08:03:47.463864Z","bundle_sha256":"7b018bdec108bf069dc45cb711b81d101cc15735b6a29656dee0d8460d881588"}}