{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:4VQNEMKVNZCIEZTHL4FDKITYT4","short_pith_number":"pith:4VQNEMKV","canonical_record":{"source":{"id":"2506.22064","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-06-27T09:57:18Z","cross_cats_sorted":[],"title_canon_sha256":"80d07e3638c5c394c347609996e03253dab36ee657b462d4a7f9416e8b157101","abstract_canon_sha256":"825da91149c9957dd61d6802dcabd212291a92be7b301dab9445564c395b49c2"},"schema_version":"1.0"},"canonical_sha256":"e560d231556e448266675f0a3522789f14865ecf903e1c1ec7f30af0c26ebd63","source":{"kind":"arxiv","id":"2506.22064","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.22064","created_at":"2026-07-05T11:28:21Z"},{"alias_kind":"arxiv_version","alias_value":"2506.22064v1","created_at":"2026-07-05T11:28:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.22064","created_at":"2026-07-05T11:28:21Z"},{"alias_kind":"pith_short_12","alias_value":"4VQNEMKVNZCI","created_at":"2026-07-05T11:28:21Z"},{"alias_kind":"pith_short_16","alias_value":"4VQNEMKVNZCIEZTH","created_at":"2026-07-05T11:28:21Z"},{"alias_kind":"pith_short_8","alias_value":"4VQNEMKV","created_at":"2026-07-05T11:28:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:4VQNEMKVNZCIEZTHL4FDKITYT4","target":"record","payload":{"canonical_record":{"source":{"id":"2506.22064","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-06-27T09:57:18Z","cross_cats_sorted":[],"title_canon_sha256":"80d07e3638c5c394c347609996e03253dab36ee657b462d4a7f9416e8b157101","abstract_canon_sha256":"825da91149c9957dd61d6802dcabd212291a92be7b301dab9445564c395b49c2"},"schema_version":"1.0"},"canonical_sha256":"e560d231556e448266675f0a3522789f14865ecf903e1c1ec7f30af0c26ebd63","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:28:21.361569Z","signature_b64":"FQokNYfdQybKrtsa5KquwA4FyD6rF5Qu6F7+OpCnhQ48M/6YFGaNXjoPGK/A+EgIOUuoEHwQ5d5nYvyMfj4ZAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e560d231556e448266675f0a3522789f14865ecf903e1c1ec7f30af0c26ebd63","last_reissued_at":"2026-07-05T11:28:21.361116Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:28:21.361116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.22064","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":"2026-07-05T11:28:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CfyGAd4IjOjgho2FPh9bsrEbWWta3Bm23vTvZgHtJIu5xVRSdVZfjSUn8TzKuGBprsBffPZOLuSb37uOkauVCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T11:16:20.189394Z"},"content_sha256":"ce7a60e0513a06232189b6a2416efa36e03a8ec499a5c3fa6978b1e084d377d4","schema_version":"1.0","event_id":"sha256:ce7a60e0513a06232189b6a2416efa36e03a8ec499a5c3fa6978b1e084d377d4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:4VQNEMKVNZCIEZTHL4FDKITYT4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Disentangling the growth rate of perturbations from the HI bias using only clustering data from galaxy surveys","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Anjan A Sen, Pankaj Chavan, Tapomoy Guha Sarkar","submitted_at":"2025-06-27T09:57:18Z","abstract_excerpt":"This work serves two-fold purpose. Firstly, we provide an alternative to the traditional method of determining the growth rate of density perturbations $f(z)$. In usual practice, $f(z)$ can not be directly measured from tracer clustering at some redshift without knowledge of the bias. While the bayron acoustic oscillation (BAO) imprint allows the determination of $(D_A(z), H(z))$, redshift space anisotropy (RSD) allows the measurement of a quantity $f_8(z) = f(z) \\sigma_{8,0} D_{+}(z)$. To extract $f(z)$ from $f_8(z)$, one usually requires some other data set. We show that precise BAO and RSD "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.22064","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/2506.22064/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":"2026-07-05T11:28:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dVjxDi0OgtqThHhkcrrn4xzzSurEyH/pTeK+Jyv7BcY8M/afLBUaCJhSltRYWu6Bi4mpr7/hqNHs0AuEc0BuDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T11:16:20.189885Z"},"content_sha256":"a6626b935651183539ff8b9ff5a2bc44170ae916479e2cee42e7694f42dd927c","schema_version":"1.0","event_id":"sha256:a6626b935651183539ff8b9ff5a2bc44170ae916479e2cee42e7694f42dd927c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4VQNEMKVNZCIEZTHL4FDKITYT4/bundle.json","state_url":"https://pith.science/pith/4VQNEMKVNZCIEZTHL4FDKITYT4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4VQNEMKVNZCIEZTHL4FDKITYT4/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":"2026-08-10T11:16:20Z","links":{"resolver":"https://pith.science/pith/4VQNEMKVNZCIEZTHL4FDKITYT4","bundle":"https://pith.science/pith/4VQNEMKVNZCIEZTHL4FDKITYT4/bundle.json","state":"https://pith.science/pith/4VQNEMKVNZCIEZTHL4FDKITYT4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4VQNEMKVNZCIEZTHL4FDKITYT4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:4VQNEMKVNZCIEZTHL4FDKITYT4","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":"825da91149c9957dd61d6802dcabd212291a92be7b301dab9445564c395b49c2","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-06-27T09:57:18Z","title_canon_sha256":"80d07e3638c5c394c347609996e03253dab36ee657b462d4a7f9416e8b157101"},"schema_version":"1.0","source":{"id":"2506.22064","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.22064","created_at":"2026-07-05T11:28:21Z"},{"alias_kind":"arxiv_version","alias_value":"2506.22064v1","created_at":"2026-07-05T11:28:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.22064","created_at":"2026-07-05T11:28:21Z"},{"alias_kind":"pith_short_12","alias_value":"4VQNEMKVNZCI","created_at":"2026-07-05T11:28:21Z"},{"alias_kind":"pith_short_16","alias_value":"4VQNEMKVNZCIEZTH","created_at":"2026-07-05T11:28:21Z"},{"alias_kind":"pith_short_8","alias_value":"4VQNEMKV","created_at":"2026-07-05T11:28:21Z"}],"graph_snapshots":[{"event_id":"sha256:a6626b935651183539ff8b9ff5a2bc44170ae916479e2cee42e7694f42dd927c","target":"graph","created_at":"2026-07-05T11:28:21Z","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/2506.22064/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This work serves two-fold purpose. Firstly, we provide an alternative to the traditional method of determining the growth rate of density perturbations $f(z)$. In usual practice, $f(z)$ can not be directly measured from tracer clustering at some redshift without knowledge of the bias. While the bayron acoustic oscillation (BAO) imprint allows the determination of $(D_A(z), H(z))$, redshift space anisotropy (RSD) allows the measurement of a quantity $f_8(z) = f(z) \\sigma_{8,0} D_{+}(z)$. To extract $f(z)$ from $f_8(z)$, one usually requires some other data set. We show that precise BAO and RSD ","authors_text":"Anjan A Sen, Pankaj Chavan, Tapomoy Guha Sarkar","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-06-27T09:57:18Z","title":"Disentangling the growth rate of perturbations from the HI bias using only clustering data from galaxy surveys"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.22064","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:ce7a60e0513a06232189b6a2416efa36e03a8ec499a5c3fa6978b1e084d377d4","target":"record","created_at":"2026-07-05T11:28:21Z","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":"825da91149c9957dd61d6802dcabd212291a92be7b301dab9445564c395b49c2","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-06-27T09:57:18Z","title_canon_sha256":"80d07e3638c5c394c347609996e03253dab36ee657b462d4a7f9416e8b157101"},"schema_version":"1.0","source":{"id":"2506.22064","kind":"arxiv","version":1}},"canonical_sha256":"e560d231556e448266675f0a3522789f14865ecf903e1c1ec7f30af0c26ebd63","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e560d231556e448266675f0a3522789f14865ecf903e1c1ec7f30af0c26ebd63","first_computed_at":"2026-07-05T11:28:21.361116Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:28:21.361116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FQokNYfdQybKrtsa5KquwA4FyD6rF5Qu6F7+OpCnhQ48M/6YFGaNXjoPGK/A+EgIOUuoEHwQ5d5nYvyMfj4ZAw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:28:21.361569Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.22064","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce7a60e0513a06232189b6a2416efa36e03a8ec499a5c3fa6978b1e084d377d4","sha256:a6626b935651183539ff8b9ff5a2bc44170ae916479e2cee42e7694f42dd927c"],"state_sha256":"e84f85ca86354a0f8f11824f65d80e2a544ee167350c7361a48f80ba7d29368e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SU6FijORqWBH2MPTY7GAUQXNmjx9fcR6ITD8wtyjrrUKDd/yPyUvrkff4vOiUMJut+N6fIbzcKzQy0ym3hFgAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T11:16:20.193563Z","bundle_sha256":"04eb852779352177158ce3ee1295596e4a39635bfb03a71ee9286ecca366be85"}}