{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:HOZQKC6EEKRYXJXDUICPZCPNJT","short_pith_number":"pith:HOZQKC6E","canonical_record":{"source":{"id":"2011.13503","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-27T00:06:31Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"b0b505f0c0af30bfdf8332555e8bd1b920f9290eecd51996e14a02cc74d4a36e","abstract_canon_sha256":"d9645df9a8b6fffe42385c06a7adf441f84214b838edd6ea0be855346dbaead9"},"schema_version":"1.0"},"canonical_sha256":"3bb3050bc422a38ba6e3a204fc89ed4cfd555fc30829e60f7cb3d3932fb9845b","source":{"kind":"arxiv","id":"2011.13503","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.13503","created_at":"2026-07-05T02:33:23Z"},{"alias_kind":"arxiv_version","alias_value":"2011.13503v2","created_at":"2026-07-05T02:33:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.13503","created_at":"2026-07-05T02:33:23Z"},{"alias_kind":"pith_short_12","alias_value":"HOZQKC6EEKRY","created_at":"2026-07-05T02:33:23Z"},{"alias_kind":"pith_short_16","alias_value":"HOZQKC6EEKRYXJXD","created_at":"2026-07-05T02:33:23Z"},{"alias_kind":"pith_short_8","alias_value":"HOZQKC6E","created_at":"2026-07-05T02:33:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:HOZQKC6EEKRYXJXDUICPZCPNJT","target":"record","payload":{"canonical_record":{"source":{"id":"2011.13503","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-27T00:06:31Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"b0b505f0c0af30bfdf8332555e8bd1b920f9290eecd51996e14a02cc74d4a36e","abstract_canon_sha256":"d9645df9a8b6fffe42385c06a7adf441f84214b838edd6ea0be855346dbaead9"},"schema_version":"1.0"},"canonical_sha256":"3bb3050bc422a38ba6e3a204fc89ed4cfd555fc30829e60f7cb3d3932fb9845b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:33:23.658331Z","signature_b64":"Ed1dQNGlV05jlb5+a92ytzzbJOw2iHlr0O81pOWCG2qclo8+SbxWvdmwNXTkYtw6PIFLRnjtfQh5ljkOdzkCCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3bb3050bc422a38ba6e3a204fc89ed4cfd555fc30829e60f7cb3d3932fb9845b","last_reissued_at":"2026-07-05T02:33:23.656648Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:33:23.656648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.13503","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:33:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yD4Wm50/3G3pC6C+uXO6uF8F0ZVkLldoa3kD2nUX8wk3/euMaRnYneV61aHu0sLVZq41vN14zwub2WIp+XGmCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T15:15:22.711695Z"},"content_sha256":"b021ca1c6f141a7b164f2dfaab7be988f1539d1f752beae8e9eaa1f89d796954","schema_version":"1.0","event_id":"sha256:b021ca1c6f141a7b164f2dfaab7be988f1539d1f752beae8e9eaa1f89d796954"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:HOZQKC6EEKRYXJXDUICPZCPNJT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modelling Neutron Star-Black Hole Binaries: Future Pulsar Surveys and Gravitational Wave Detectors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Debatri Chattopadhyay, Floor Broekgaarden, Jarrod R. Hurley, Matthew Bailes, Simon Stevenson","submitted_at":"2020-11-27T00:06:31Z","abstract_excerpt":"Binaries comprised of a neutron star (NS) and a black hole (BH) have so far eluded observations as pulsars and with gravitational waves (GWs). We model the formation and evolution of these NS+BH binaries - including pulsar evolution - using the binary population synthesis code COMPAS. We predict the presence of a total of 50-2000 binaries containing a pulsar and a BH (PSR+BHs) in the Galactic field. We find the population observable by the next generation of radio telescopes, represented by the SKA and MeerKAT, current (LIGO/Virgo) and future (LISA) GW detectors. We conclude that the SKA will "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.13503","kind":"arxiv","version":2},"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/2011.13503/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":"2026-07-05T02:33:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f4e1560XwX2bSv2fMFIZSGLeiTF5VOwJSDq1/LDWmVBPGGJzkkXuItqvckDaHmHKIMaHdpXwyw3Xu8fn8jj+Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T15:15:22.712195Z"},"content_sha256":"d2e396cfb1a09fc9f4c90475147d9eb2bc9f3c451aed842e9047b1dcb497918e","schema_version":"1.0","event_id":"sha256:d2e396cfb1a09fc9f4c90475147d9eb2bc9f3c451aed842e9047b1dcb497918e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HOZQKC6EEKRYXJXDUICPZCPNJT/bundle.json","state_url":"https://pith.science/pith/HOZQKC6EEKRYXJXDUICPZCPNJT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HOZQKC6EEKRYXJXDUICPZCPNJT/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":"2026-08-05T15:15:22Z","links":{"resolver":"https://pith.science/pith/HOZQKC6EEKRYXJXDUICPZCPNJT","bundle":"https://pith.science/pith/HOZQKC6EEKRYXJXDUICPZCPNJT/bundle.json","state":"https://pith.science/pith/HOZQKC6EEKRYXJXDUICPZCPNJT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HOZQKC6EEKRYXJXDUICPZCPNJT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:HOZQKC6EEKRYXJXDUICPZCPNJT","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":"d9645df9a8b6fffe42385c06a7adf441f84214b838edd6ea0be855346dbaead9","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-27T00:06:31Z","title_canon_sha256":"b0b505f0c0af30bfdf8332555e8bd1b920f9290eecd51996e14a02cc74d4a36e"},"schema_version":"1.0","source":{"id":"2011.13503","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.13503","created_at":"2026-07-05T02:33:23Z"},{"alias_kind":"arxiv_version","alias_value":"2011.13503v2","created_at":"2026-07-05T02:33:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.13503","created_at":"2026-07-05T02:33:23Z"},{"alias_kind":"pith_short_12","alias_value":"HOZQKC6EEKRY","created_at":"2026-07-05T02:33:23Z"},{"alias_kind":"pith_short_16","alias_value":"HOZQKC6EEKRYXJXD","created_at":"2026-07-05T02:33:23Z"},{"alias_kind":"pith_short_8","alias_value":"HOZQKC6E","created_at":"2026-07-05T02:33:23Z"}],"graph_snapshots":[{"event_id":"sha256:d2e396cfb1a09fc9f4c90475147d9eb2bc9f3c451aed842e9047b1dcb497918e","target":"graph","created_at":"2026-07-05T02:33:23Z","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/2011.13503/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Binaries comprised of a neutron star (NS) and a black hole (BH) have so far eluded observations as pulsars and with gravitational waves (GWs). We model the formation and evolution of these NS+BH binaries - including pulsar evolution - using the binary population synthesis code COMPAS. We predict the presence of a total of 50-2000 binaries containing a pulsar and a BH (PSR+BHs) in the Galactic field. We find the population observable by the next generation of radio telescopes, represented by the SKA and MeerKAT, current (LIGO/Virgo) and future (LISA) GW detectors. We conclude that the SKA will ","authors_text":"Debatri Chattopadhyay, Floor Broekgaarden, Jarrod R. Hurley, Matthew Bailes, Simon Stevenson","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-27T00:06:31Z","title":"Modelling Neutron Star-Black Hole Binaries: Future Pulsar Surveys and Gravitational Wave Detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.13503","kind":"arxiv","version":2},"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:b021ca1c6f141a7b164f2dfaab7be988f1539d1f752beae8e9eaa1f89d796954","target":"record","created_at":"2026-07-05T02:33:23Z","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":"d9645df9a8b6fffe42385c06a7adf441f84214b838edd6ea0be855346dbaead9","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-27T00:06:31Z","title_canon_sha256":"b0b505f0c0af30bfdf8332555e8bd1b920f9290eecd51996e14a02cc74d4a36e"},"schema_version":"1.0","source":{"id":"2011.13503","kind":"arxiv","version":2}},"canonical_sha256":"3bb3050bc422a38ba6e3a204fc89ed4cfd555fc30829e60f7cb3d3932fb9845b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3bb3050bc422a38ba6e3a204fc89ed4cfd555fc30829e60f7cb3d3932fb9845b","first_computed_at":"2026-07-05T02:33:23.656648Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:33:23.656648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ed1dQNGlV05jlb5+a92ytzzbJOw2iHlr0O81pOWCG2qclo8+SbxWvdmwNXTkYtw6PIFLRnjtfQh5ljkOdzkCCA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:33:23.658331Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.13503","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b021ca1c6f141a7b164f2dfaab7be988f1539d1f752beae8e9eaa1f89d796954","sha256:d2e396cfb1a09fc9f4c90475147d9eb2bc9f3c451aed842e9047b1dcb497918e"],"state_sha256":"a06d2fb07850c3063c19b1aa7b65f71c58d65553892e401c40a8887771c01817"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yBr3IBwG7wg3AepXfNjWBK9t4R+5Hv6MJSMCKmz714lzsb9/JGK4ezQCjzzRrDGilH6+FGmgT1/fCGlHJOZXAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T15:15:22.715756Z","bundle_sha256":"e30c5b5aac719d3be911f008760d8d10890608eae360562211ac4268998521e3"}}