{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:RDUVXDL3EBAMXFFZ57FHYSWQBX","short_pith_number":"pith:RDUVXDL3","canonical_record":{"source":{"id":"2206.01579","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-06-03T14:03:31Z","cross_cats_sorted":[],"title_canon_sha256":"2669d740516cd3644f2f729343d1a86446f9261cde8284956d069600df5b7d4c","abstract_canon_sha256":"a71a1eb579bf46bafb9f2e385a5f2226ef06f4a44207792d258479454cdaf89b"},"schema_version":"1.0"},"canonical_sha256":"88e95b8d7b2040cb94b9efca7c4ad00df0986605523fa41e5965fcff51a868a6","source":{"kind":"arxiv","id":"2206.01579","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.01579","created_at":"2026-07-05T05:14:15Z"},{"alias_kind":"arxiv_version","alias_value":"2206.01579v2","created_at":"2026-07-05T05:14:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.01579","created_at":"2026-07-05T05:14:15Z"},{"alias_kind":"pith_short_12","alias_value":"RDUVXDL3EBAM","created_at":"2026-07-05T05:14:15Z"},{"alias_kind":"pith_short_16","alias_value":"RDUVXDL3EBAMXFFZ","created_at":"2026-07-05T05:14:15Z"},{"alias_kind":"pith_short_8","alias_value":"RDUVXDL3","created_at":"2026-07-05T05:14:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:RDUVXDL3EBAMXFFZ57FHYSWQBX","target":"record","payload":{"canonical_record":{"source":{"id":"2206.01579","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-06-03T14:03:31Z","cross_cats_sorted":[],"title_canon_sha256":"2669d740516cd3644f2f729343d1a86446f9261cde8284956d069600df5b7d4c","abstract_canon_sha256":"a71a1eb579bf46bafb9f2e385a5f2226ef06f4a44207792d258479454cdaf89b"},"schema_version":"1.0"},"canonical_sha256":"88e95b8d7b2040cb94b9efca7c4ad00df0986605523fa41e5965fcff51a868a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:14:15.802077Z","signature_b64":"T0rk1t6jIDE2j2ljh4d0ekv5UDbG7OCK6wCia8OAcvxSla0URiUTMSBOP7G40edukspn/Tvs2W9+EQC1QjfxAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"88e95b8d7b2040cb94b9efca7c4ad00df0986605523fa41e5965fcff51a868a6","last_reissued_at":"2026-07-05T05:14:15.801573Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:14:15.801573Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2206.01579","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":"2026-07-05T05:14:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9exy8R3czPrSTaSzX/nnK93KDo2iCr1qYiteGSgRC6DJ6pqVT0hMpXTCaKcPvJrP3sVs1KxxqXRtE0DeiKXGDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T01:44:33.324644Z"},"content_sha256":"91e69dd7e80387b39c49a8183c3fe9115151c29246a3847a4d94fdc849875268","schema_version":"1.0","event_id":"sha256:91e69dd7e80387b39c49a8183c3fe9115151c29246a3847a4d94fdc849875268"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:RDUVXDL3EBAMXFFZ57FHYSWQBX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HI intensity mapping with MeerKAT: power spectrum detection in cross-correlation with WiggleZ galaxies","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Alkistis Pourtsidou, Brandon Engelbrecht, Chris Blake, Isabella P. Carucci, Jingying Wang, Jos\\'e Fonseca, Keith Grainge, Laura Wolz, Mario G. Santos, Marta Spinelli, Melis O. Irfan, Paula S. Soares, Philip Bull, Steven Cunnington, Yichao Li, Yin-Zhe Ma","submitted_at":"2022-06-03T14:03:31Z","abstract_excerpt":"We present a detection of correlated clustering between MeerKAT radio intensity maps and galaxies from the WiggleZ Dark Energy Survey. We find a $7.7\\sigma$ detection of the cross-correlation power spectrum, the amplitude of which is proportional to the product of the HI density fraction ($\\Omega_{\\rm HI}$), HI bias ($b_{\\rm HI}$) and the cross-correlation coefficient ($r$). We therefore obtain the constraint $\\Omega_{\\rm HI} b_{\\rm HI} r\\,{=}\\,[0.86\\,{\\pm}\\,0.10\\,({\\rm stat})\\,{\\pm}\\,0.12\\,({\\rm sys})]\\,{\\times}\\,10^{-3}$, at an effective scale of $k_{\\rm eff}\\,{\\sim}\\,0.13\\,h\\,{\\rm Mpc}^{-1}"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.01579","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/2206.01579/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":"2026-07-05T05:14:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w7ql5s3522EirYfYgdOCQcMjQjfBxYygqs8XURS61xTeAe6WOTqj+w/rhFpd0yhVG+vc9Ks3gI1zcq2QjbkgDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T01:44:33.325015Z"},"content_sha256":"4d52362c096212d0807f13c028f22a19266fc434c4ec784ce5b3d1a3788a57ef","schema_version":"1.0","event_id":"sha256:4d52362c096212d0807f13c028f22a19266fc434c4ec784ce5b3d1a3788a57ef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RDUVXDL3EBAMXFFZ57FHYSWQBX/bundle.json","state_url":"https://pith.science/pith/RDUVXDL3EBAMXFFZ57FHYSWQBX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RDUVXDL3EBAMXFFZ57FHYSWQBX/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":"2026-07-22T01:44:33Z","links":{"resolver":"https://pith.science/pith/RDUVXDL3EBAMXFFZ57FHYSWQBX","bundle":"https://pith.science/pith/RDUVXDL3EBAMXFFZ57FHYSWQBX/bundle.json","state":"https://pith.science/pith/RDUVXDL3EBAMXFFZ57FHYSWQBX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RDUVXDL3EBAMXFFZ57FHYSWQBX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:RDUVXDL3EBAMXFFZ57FHYSWQBX","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":"a71a1eb579bf46bafb9f2e385a5f2226ef06f4a44207792d258479454cdaf89b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-06-03T14:03:31Z","title_canon_sha256":"2669d740516cd3644f2f729343d1a86446f9261cde8284956d069600df5b7d4c"},"schema_version":"1.0","source":{"id":"2206.01579","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.01579","created_at":"2026-07-05T05:14:15Z"},{"alias_kind":"arxiv_version","alias_value":"2206.01579v2","created_at":"2026-07-05T05:14:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.01579","created_at":"2026-07-05T05:14:15Z"},{"alias_kind":"pith_short_12","alias_value":"RDUVXDL3EBAM","created_at":"2026-07-05T05:14:15Z"},{"alias_kind":"pith_short_16","alias_value":"RDUVXDL3EBAMXFFZ","created_at":"2026-07-05T05:14:15Z"},{"alias_kind":"pith_short_8","alias_value":"RDUVXDL3","created_at":"2026-07-05T05:14:15Z"}],"graph_snapshots":[{"event_id":"sha256:4d52362c096212d0807f13c028f22a19266fc434c4ec784ce5b3d1a3788a57ef","target":"graph","created_at":"2026-07-05T05:14:15Z","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/2206.01579/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a detection of correlated clustering between MeerKAT radio intensity maps and galaxies from the WiggleZ Dark Energy Survey. We find a $7.7\\sigma$ detection of the cross-correlation power spectrum, the amplitude of which is proportional to the product of the HI density fraction ($\\Omega_{\\rm HI}$), HI bias ($b_{\\rm HI}$) and the cross-correlation coefficient ($r$). We therefore obtain the constraint $\\Omega_{\\rm HI} b_{\\rm HI} r\\,{=}\\,[0.86\\,{\\pm}\\,0.10\\,({\\rm stat})\\,{\\pm}\\,0.12\\,({\\rm sys})]\\,{\\times}\\,10^{-3}$, at an effective scale of $k_{\\rm eff}\\,{\\sim}\\,0.13\\,h\\,{\\rm Mpc}^{-1}","authors_text":"Alkistis Pourtsidou, Brandon Engelbrecht, Chris Blake, Isabella P. Carucci, Jingying Wang, Jos\\'e Fonseca, Keith Grainge, Laura Wolz, Mario G. Santos, Marta Spinelli, Melis O. Irfan, Paula S. Soares, Philip Bull, Steven Cunnington, Yichao Li, Yin-Zhe Ma","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-06-03T14:03:31Z","title":"HI intensity mapping with MeerKAT: power spectrum detection in cross-correlation with WiggleZ galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.01579","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":"sha256:91e69dd7e80387b39c49a8183c3fe9115151c29246a3847a4d94fdc849875268","target":"record","created_at":"2026-07-05T05:14:15Z","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":"a71a1eb579bf46bafb9f2e385a5f2226ef06f4a44207792d258479454cdaf89b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-06-03T14:03:31Z","title_canon_sha256":"2669d740516cd3644f2f729343d1a86446f9261cde8284956d069600df5b7d4c"},"schema_version":"1.0","source":{"id":"2206.01579","kind":"arxiv","version":2}},"canonical_sha256":"88e95b8d7b2040cb94b9efca7c4ad00df0986605523fa41e5965fcff51a868a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"88e95b8d7b2040cb94b9efca7c4ad00df0986605523fa41e5965fcff51a868a6","first_computed_at":"2026-07-05T05:14:15.801573Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:14:15.801573Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T0rk1t6jIDE2j2ljh4d0ekv5UDbG7OCK6wCia8OAcvxSla0URiUTMSBOP7G40edukspn/Tvs2W9+EQC1QjfxAg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:14:15.802077Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.01579","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:91e69dd7e80387b39c49a8183c3fe9115151c29246a3847a4d94fdc849875268","sha256:4d52362c096212d0807f13c028f22a19266fc434c4ec784ce5b3d1a3788a57ef"],"state_sha256":"0efb2041923c19caa1766ec2f5eecb9a89c3881db91ad7b3add1a171293caf4d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PFalCQ0FS1XtJj9xsTaW7yrai0XuArzJpKt3oAmayfEyWC98oVt+4FH3yb52l1vyaqKz/VVF0oPPvJoD4uGdBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-22T01:44:33.327147Z","bundle_sha256":"8b35487dfff43ec79a89d9ccffc788be95a9b6769b67f79c49bb25bdc5fe141f"}}