{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:72V3BKITWLNTCP5R2ZDZBW7FIH","short_pith_number":"pith:72V3BKIT","canonical_record":{"source":{"id":"2605.18731","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-05-18T17:53:13Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c649002762bc90608201e0202a475af861e897054c51b71adc818855d73b498b","abstract_canon_sha256":"2d2183a7ce4e18366d231fcd20e022e88a98ba364d1febe986f9f3b91e8f7bc8"},"schema_version":"1.0"},"canonical_sha256":"feabb0a913b2db313fb1d64790dbe541d5348e83cb709b681a9a138c96eb0f1f","source":{"kind":"arxiv","id":"2605.18731","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.18731","created_at":"2026-05-20T00:06:17Z"},{"alias_kind":"arxiv_version","alias_value":"2605.18731v1","created_at":"2026-05-20T00:06:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.18731","created_at":"2026-05-20T00:06:17Z"},{"alias_kind":"pith_short_12","alias_value":"72V3BKITWLNT","created_at":"2026-05-20T00:06:17Z"},{"alias_kind":"pith_short_16","alias_value":"72V3BKITWLNTCP5R","created_at":"2026-05-20T00:06:17Z"},{"alias_kind":"pith_short_8","alias_value":"72V3BKIT","created_at":"2026-05-20T00:06:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:72V3BKITWLNTCP5R2ZDZBW7FIH","target":"record","payload":{"canonical_record":{"source":{"id":"2605.18731","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-05-18T17:53:13Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c649002762bc90608201e0202a475af861e897054c51b71adc818855d73b498b","abstract_canon_sha256":"2d2183a7ce4e18366d231fcd20e022e88a98ba364d1febe986f9f3b91e8f7bc8"},"schema_version":"1.0"},"canonical_sha256":"feabb0a913b2db313fb1d64790dbe541d5348e83cb709b681a9a138c96eb0f1f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T00:06:17.817048Z","signature_b64":"HP6O3powx9N0wO4nl6Ot9jn8/WTIckJSV5yf7ifRNFkhYjevuzLMH8QzNUfzDPmebPInQUdT3F8eeb3PSEgmBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"feabb0a913b2db313fb1d64790dbe541d5348e83cb709b681a9a138c96eb0f1f","last_reissued_at":"2026-05-20T00:06:17.816170Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T00:06:17.816170Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.18731","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":"2026-05-20T00:06:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yHZ8fbrjxeiHlo28I3IcEPRI9o2dWaDiXR/LeZmqBIohrHjEuSPuQOjLmnP71pjD9+MuB8+senuUrsrY9XcBDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T22:36:54.352614Z"},"content_sha256":"ff34a1bc12d409657183f99e862583594130518c67b3831c9ed0dbaa4d0b0532","schema_version":"1.0","event_id":"sha256:ff34a1bc12d409657183f99e862583594130518c67b3831c9ed0dbaa4d0b0532"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:72V3BKITWLNTCP5R2ZDZBW7FIH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pulse profile modelling of the 2024 outburst of the accreting millisecond pulsar SRGA J144459.2-604207","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Alessandro Di Marco, Alessandro Papitto, Anna Bobrikova, Anna L. Watts, Bas Dorsman, Christian Malacaria, Duncan K. Galloway, Fabio La Monaca, Juri Poutanen, Mariska Hoogkamer, Mason Ng, Matteo Lucchini, Sebastien Guillot, Tuomo Salmi, Vladislav Loktev, Ying-Han Mao, Yves Kini","submitted_at":"2026-05-18T17:53:13Z","abstract_excerpt":"Pulse profile modelling via relativistic ray-tracing can constrain the system parameters of neutron stars, notably their mass and radius. Among these objects, accreting millisecond pulsars (AMPs) are promising targets, because they are bright in X-rays and their potentially polarized radiation can lead to complementary constraints on the emission geometry. We perform combined analysis of NICER and IXPE observations of the recently discovered the 448-Hz pulsar SRGA J144459.2-604207, with IXPE providing X-ray polarization information. NICER and IXPE jointly favour a large mass and radius for our"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.18731","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.18731/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"claim_evidence","ran_at":"2026-05-20T00:01:59.019046Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"d5f1e5c50e82cf0829c2a788001f69554d00c6558c49648b60ca0afa78ed80fb"},"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":"2026-05-20T00:06:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ywQcSd6pYtNNdsvNKtKOl4xtQqKTJ5L1o/5oeqSlGSBxKMOVDVCxwIyGs7VcamsKpuv0qK7OBsjrHdnhNeKIDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T22:36:54.353013Z"},"content_sha256":"03f663da69f1b1bae733b0abde05e0882ca3747bfb651523a633f5c19f08bccd","schema_version":"1.0","event_id":"sha256:03f663da69f1b1bae733b0abde05e0882ca3747bfb651523a633f5c19f08bccd"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:72V3BKITWLNTCP5R2ZDZBW7FIH","target":"integrity","payload":{"note":"DOI '10.1103/ymsq-cfcw' as printed in the bibliography is syntactically invalid and cannot resolve.","snippet":"Neutron stars and the dense matter equation of state. Reviews of Modern Physics , keywords =. doi:10.1103/ymsq-cfcw , adsurl =","arxiv_id":"2605.18731","detector":"doi_compliance","evidence":{"ref_index":163,"raw_excerpt":"Neutron stars and the dense matter equation of state. Reviews of Modern Physics , keywords =. doi:10.1103/ymsq-cfcw , adsurl =","verdict_class":"incontrovertible","doi_as_printed":"10.1103/ymsq-cfcw"},"severity":"critical","ref_index":163,"audited_at":"2026-05-20T09:01:18.269291Z","event_type":"pith.integrity.v1","detected_doi":"10.1103/ymsq-cfcw","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"broken_identifier","evidence_hash":"8331a85df5ceaf02c7b95cc36e1d76268c09f2d5a71acfdf9ac8d90dd5ded870","paper_version":1,"verdict_class":"incontrovertible","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null,"integrity_event_id":4948,"payload_sha256":"e417ad09c078646b71e3fef39b8d8b87ec69686e954ebd11c1ced8a9a169fb24","signature_b64":"gtgTrHTZhNCx9A20Xb6CM85Jh42eKhHP0JPxEmQp6D/zjAQQ9OBIT+l3wlbMtHRD8WGnFftiCnoNnopAr9XJBQ==","signing_key_id":"pith-v1-2026-05"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-20T09:02:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IqzAiIgdpWmcmDUrz5qPcuHDIkxYrKj4mcCcVLbVnmPCSPdB2l587947Th6mQ4OPm5zku7VjLaIzJKSGC8AsCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T22:36:54.353991Z"},"content_sha256":"433fc59c6a37127a4382d9a6e51181b45ccd6b4aff80024ca2d6aef5b49fb381","schema_version":"1.0","event_id":"sha256:433fc59c6a37127a4382d9a6e51181b45ccd6b4aff80024ca2d6aef5b49fb381"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/72V3BKITWLNTCP5R2ZDZBW7FIH/bundle.json","state_url":"https://pith.science/pith/72V3BKITWLNTCP5R2ZDZBW7FIH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/72V3BKITWLNTCP5R2ZDZBW7FIH/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":"2026-05-21T22:36:54Z","links":{"resolver":"https://pith.science/pith/72V3BKITWLNTCP5R2ZDZBW7FIH","bundle":"https://pith.science/pith/72V3BKITWLNTCP5R2ZDZBW7FIH/bundle.json","state":"https://pith.science/pith/72V3BKITWLNTCP5R2ZDZBW7FIH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/72V3BKITWLNTCP5R2ZDZBW7FIH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:72V3BKITWLNTCP5R2ZDZBW7FIH","merge_version":"pith-open-graph-merge-v1","event_count":3,"valid_event_count":3,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"2d2183a7ce4e18366d231fcd20e022e88a98ba364d1febe986f9f3b91e8f7bc8","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-05-18T17:53:13Z","title_canon_sha256":"c649002762bc90608201e0202a475af861e897054c51b71adc818855d73b498b"},"schema_version":"1.0","source":{"id":"2605.18731","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.18731","created_at":"2026-05-20T00:06:17Z"},{"alias_kind":"arxiv_version","alias_value":"2605.18731v1","created_at":"2026-05-20T00:06:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.18731","created_at":"2026-05-20T00:06:17Z"},{"alias_kind":"pith_short_12","alias_value":"72V3BKITWLNT","created_at":"2026-05-20T00:06:17Z"},{"alias_kind":"pith_short_16","alias_value":"72V3BKITWLNTCP5R","created_at":"2026-05-20T00:06:17Z"},{"alias_kind":"pith_short_8","alias_value":"72V3BKIT","created_at":"2026-05-20T00:06:17Z"}],"graph_snapshots":[{"event_id":"sha256:03f663da69f1b1bae733b0abde05e0882ca3747bfb651523a633f5c19f08bccd","target":"graph","created_at":"2026-05-20T00:06:17Z","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":[{"findings_count":0,"name":"claim_evidence","ran_at":"2026-05-20T00:01:59.019046Z","status":"completed","version":"1.0.0"}],"endpoint":"/pith/2605.18731/integrity.json","findings":[],"snapshot_sha256":"d5f1e5c50e82cf0829c2a788001f69554d00c6558c49648b60ca0afa78ed80fb","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Pulse profile modelling via relativistic ray-tracing can constrain the system parameters of neutron stars, notably their mass and radius. Among these objects, accreting millisecond pulsars (AMPs) are promising targets, because they are bright in X-rays and their potentially polarized radiation can lead to complementary constraints on the emission geometry. We perform combined analysis of NICER and IXPE observations of the recently discovered the 448-Hz pulsar SRGA J144459.2-604207, with IXPE providing X-ray polarization information. NICER and IXPE jointly favour a large mass and radius for our","authors_text":"Alessandro Di Marco, Alessandro Papitto, Anna Bobrikova, Anna L. Watts, Bas Dorsman, Christian Malacaria, Duncan K. Galloway, Fabio La Monaca, Juri Poutanen, Mariska Hoogkamer, Mason Ng, Matteo Lucchini, Sebastien Guillot, Tuomo Salmi, Vladislav Loktev, Ying-Han Mao, Yves Kini","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-05-18T17:53:13Z","title":"Pulse profile modelling of the 2024 outburst of the accreting millisecond pulsar SRGA J144459.2-604207"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.18731","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:ff34a1bc12d409657183f99e862583594130518c67b3831c9ed0dbaa4d0b0532","target":"record","created_at":"2026-05-20T00:06:17Z","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":"2d2183a7ce4e18366d231fcd20e022e88a98ba364d1febe986f9f3b91e8f7bc8","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-05-18T17:53:13Z","title_canon_sha256":"c649002762bc90608201e0202a475af861e897054c51b71adc818855d73b498b"},"schema_version":"1.0","source":{"id":"2605.18731","kind":"arxiv","version":1}},"canonical_sha256":"feabb0a913b2db313fb1d64790dbe541d5348e83cb709b681a9a138c96eb0f1f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"feabb0a913b2db313fb1d64790dbe541d5348e83cb709b681a9a138c96eb0f1f","first_computed_at":"2026-05-20T00:06:17.816170Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:06:17.816170Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HP6O3powx9N0wO4nl6Ot9jn8/WTIckJSV5yf7ifRNFkhYjevuzLMH8QzNUfzDPmebPInQUdT3F8eeb3PSEgmBQ==","signature_status":"signed_v1","signed_at":"2026-05-20T00:06:17.817048Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.18731","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ff34a1bc12d409657183f99e862583594130518c67b3831c9ed0dbaa4d0b0532","sha256:03f663da69f1b1bae733b0abde05e0882ca3747bfb651523a633f5c19f08bccd","sha256:433fc59c6a37127a4382d9a6e51181b45ccd6b4aff80024ca2d6aef5b49fb381"],"state_sha256":"7766c055a8702823e3d166e2fc549a26b7820403b83b9774f75f5856cf6633ac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NTQIESARqox5d0WuP8W7AUSZSTRC8ZpNdBhl+raFksjKsvQn96Zq80nywa/y6zbO0BL7St6DXnsybv+NTKI3BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T22:36:54.356745Z","bundle_sha256":"096d53120b71955fcd8aeee7b9b8aac86ca076de18727963a1c9e90309e26719"}}