{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:QEJUSTN4XBJGIRXLUVJ76P7EWG","short_pith_number":"pith:QEJUSTN4","canonical_record":{"source":{"id":"2212.04051","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-12-08T03:20:10Z","cross_cats_sorted":[],"title_canon_sha256":"315f0add4e08b46edd6ff867e35400f6bf9b14b94357d1abdf8406fe03374465","abstract_canon_sha256":"f8e1d8b1067673948ac70fc55b70eb45421c27469cb2a0991aaf752dea855948"},"schema_version":"1.0"},"canonical_sha256":"8113494dbcb8526446eba553ff3fe4b1bdd16313809a54b1c3c3eb153545463e","source":{"kind":"arxiv","id":"2212.04051","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.04051","created_at":"2026-07-05T05:32:01Z"},{"alias_kind":"arxiv_version","alias_value":"2212.04051v1","created_at":"2026-07-05T05:32:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.04051","created_at":"2026-07-05T05:32:01Z"},{"alias_kind":"pith_short_12","alias_value":"QEJUSTN4XBJG","created_at":"2026-07-05T05:32:01Z"},{"alias_kind":"pith_short_16","alias_value":"QEJUSTN4XBJGIRXL","created_at":"2026-07-05T05:32:01Z"},{"alias_kind":"pith_short_8","alias_value":"QEJUSTN4","created_at":"2026-07-05T05:32:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:QEJUSTN4XBJGIRXLUVJ76P7EWG","target":"record","payload":{"canonical_record":{"source":{"id":"2212.04051","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-12-08T03:20:10Z","cross_cats_sorted":[],"title_canon_sha256":"315f0add4e08b46edd6ff867e35400f6bf9b14b94357d1abdf8406fe03374465","abstract_canon_sha256":"f8e1d8b1067673948ac70fc55b70eb45421c27469cb2a0991aaf752dea855948"},"schema_version":"1.0"},"canonical_sha256":"8113494dbcb8526446eba553ff3fe4b1bdd16313809a54b1c3c3eb153545463e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:32:01.347743Z","signature_b64":"7kTBN1LVVNNd11ytAHIkcna4KWO4Pi+KR2aRYrsyqPMAbXZf1MEe1WRM74mnxVFVIgICGsk7PFxreuVB1iQxBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8113494dbcb8526446eba553ff3fe4b1bdd16313809a54b1c3c3eb153545463e","last_reissued_at":"2026-07-05T05:32:01.347203Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:32:01.347203Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2212.04051","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":"2026-07-05T05:32:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vxosvh/dJ2lZbb92xK9c1ipoL2pp7KBQQk+qmUKBXW/q+wKIaF4hXqoO0DtgaySXpy6FR/v0g08ut6gWW3dsDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T14:05:54.834207Z"},"content_sha256":"67be48f832614825ca2de9e1b6431ccbfab105831aef0f936ec373a60ba1ece7","schema_version":"1.0","event_id":"sha256:67be48f832614825ca2de9e1b6431ccbfab105831aef0f936ec373a60ba1ece7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:QEJUSTN4XBJGIRXLUVJ76P7EWG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Searches for Shapiro delay in seven binary pulsars using the MeerKAT telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Aditya Parthasarathy, Alessandro Corongiu, Andrea Possenti, Andrew D. Cameron, Christopher Flynn, Daniel J. Reardon, David J. Champion, Marisa Geyer, Matthew Bailes, Matthew T. Miles, Michael Kramer, Miquel C. i. Bernadich, Mohsen Shamohammadi, Paulo C. C. Freire, Renee Spiewak, Ryan M. Shannon, Vivek Venkatraman Krishnan","submitted_at":"2022-12-08T03:20:10Z","abstract_excerpt":"Precision timing of millisecond pulsars in binary systems enables observers to detect the relativistic Shapiro delay induced by space time curvature. When favourably aligned, this enables constraints to be placed on the component masses and system orientation. Here we present the results of timing campaigns on seven binary millisecond pulsars observed with the 64-antenna MeerKAT radio telescope that show evidence of Shapiro delay: PSRs~J0101$-$6422, J1101$-$6424, J1125$-$6014, J1514$-$4946, J1614$-$2230, J1732$-$5049, and J1909$-$3744. Evidence for Shapiro delay was found in all of the systems"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.04051","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/2212.04051/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":"2026-07-05T05:32:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z6TcpStBLrngv8Qb+rYXMlDHN2EdEd9X+5Tagn3W/g90nkljp89IK1mIPa8hjQjB7t2kTwwueeUGiWD26csrDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T14:05:54.834806Z"},"content_sha256":"e5d0293cf17f32a917cfaefc01a36946243eef49f04560b034abc78d23e2fc15","schema_version":"1.0","event_id":"sha256:e5d0293cf17f32a917cfaefc01a36946243eef49f04560b034abc78d23e2fc15"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QEJUSTN4XBJGIRXLUVJ76P7EWG/bundle.json","state_url":"https://pith.science/pith/QEJUSTN4XBJGIRXLUVJ76P7EWG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QEJUSTN4XBJGIRXLUVJ76P7EWG/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":"2026-08-10T14:05:54Z","links":{"resolver":"https://pith.science/pith/QEJUSTN4XBJGIRXLUVJ76P7EWG","bundle":"https://pith.science/pith/QEJUSTN4XBJGIRXLUVJ76P7EWG/bundle.json","state":"https://pith.science/pith/QEJUSTN4XBJGIRXLUVJ76P7EWG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QEJUSTN4XBJGIRXLUVJ76P7EWG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:QEJUSTN4XBJGIRXLUVJ76P7EWG","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":"f8e1d8b1067673948ac70fc55b70eb45421c27469cb2a0991aaf752dea855948","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-12-08T03:20:10Z","title_canon_sha256":"315f0add4e08b46edd6ff867e35400f6bf9b14b94357d1abdf8406fe03374465"},"schema_version":"1.0","source":{"id":"2212.04051","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.04051","created_at":"2026-07-05T05:32:01Z"},{"alias_kind":"arxiv_version","alias_value":"2212.04051v1","created_at":"2026-07-05T05:32:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.04051","created_at":"2026-07-05T05:32:01Z"},{"alias_kind":"pith_short_12","alias_value":"QEJUSTN4XBJG","created_at":"2026-07-05T05:32:01Z"},{"alias_kind":"pith_short_16","alias_value":"QEJUSTN4XBJGIRXL","created_at":"2026-07-05T05:32:01Z"},{"alias_kind":"pith_short_8","alias_value":"QEJUSTN4","created_at":"2026-07-05T05:32:01Z"}],"graph_snapshots":[{"event_id":"sha256:e5d0293cf17f32a917cfaefc01a36946243eef49f04560b034abc78d23e2fc15","target":"graph","created_at":"2026-07-05T05:32:01Z","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/2212.04051/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Precision timing of millisecond pulsars in binary systems enables observers to detect the relativistic Shapiro delay induced by space time curvature. When favourably aligned, this enables constraints to be placed on the component masses and system orientation. Here we present the results of timing campaigns on seven binary millisecond pulsars observed with the 64-antenna MeerKAT radio telescope that show evidence of Shapiro delay: PSRs~J0101$-$6422, J1101$-$6424, J1125$-$6014, J1514$-$4946, J1614$-$2230, J1732$-$5049, and J1909$-$3744. Evidence for Shapiro delay was found in all of the systems","authors_text":"Aditya Parthasarathy, Alessandro Corongiu, Andrea Possenti, Andrew D. Cameron, Christopher Flynn, Daniel J. Reardon, David J. Champion, Marisa Geyer, Matthew Bailes, Matthew T. Miles, Michael Kramer, Miquel C. i. Bernadich, Mohsen Shamohammadi, Paulo C. C. Freire, Renee Spiewak, Ryan M. Shannon, Vivek Venkatraman Krishnan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-12-08T03:20:10Z","title":"Searches for Shapiro delay in seven binary pulsars using the MeerKAT telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.04051","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":"sha256:67be48f832614825ca2de9e1b6431ccbfab105831aef0f936ec373a60ba1ece7","target":"record","created_at":"2026-07-05T05:32:01Z","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":"f8e1d8b1067673948ac70fc55b70eb45421c27469cb2a0991aaf752dea855948","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-12-08T03:20:10Z","title_canon_sha256":"315f0add4e08b46edd6ff867e35400f6bf9b14b94357d1abdf8406fe03374465"},"schema_version":"1.0","source":{"id":"2212.04051","kind":"arxiv","version":1}},"canonical_sha256":"8113494dbcb8526446eba553ff3fe4b1bdd16313809a54b1c3c3eb153545463e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8113494dbcb8526446eba553ff3fe4b1bdd16313809a54b1c3c3eb153545463e","first_computed_at":"2026-07-05T05:32:01.347203Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:32:01.347203Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7kTBN1LVVNNd11ytAHIkcna4KWO4Pi+KR2aRYrsyqPMAbXZf1MEe1WRM74mnxVFVIgICGsk7PFxreuVB1iQxBw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:32:01.347743Z","signed_message":"canonical_sha256_bytes"},"source_id":"2212.04051","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67be48f832614825ca2de9e1b6431ccbfab105831aef0f936ec373a60ba1ece7","sha256:e5d0293cf17f32a917cfaefc01a36946243eef49f04560b034abc78d23e2fc15"],"state_sha256":"0437ebd7a0b4d088cae4d55e461b6619f6eeb1a6baa49a7fb27c57d94d1efe4c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J9AZFRgPwjvz5NfczeknAYaElc5bvNs+zhy0NuXcUnPrwGbRoWNY4fMq5xnQNKm3+G3EddpiEohzgiIVQiGJBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T14:05:54.841435Z","bundle_sha256":"4b21a910eccf77fabece1316a306bb22ea106b339d6eedd5c998c9c9320f8670"}}