{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:IMYBJXIKKF4L2OSUYBUOPHBEWQ","short_pith_number":"pith:IMYBJXIK","canonical_record":{"source":{"id":"2607.00785","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-01T11:15:52Z","cross_cats_sorted":[],"title_canon_sha256":"4c2df41085635e62011fa56f3a19f998d38b71aff82a9a75528abe9f830aa509","abstract_canon_sha256":"9c56276812ae75bde66769ee6dcda3cfd61ef5b0c8c53d437950e936364e2797"},"schema_version":"1.0"},"canonical_sha256":"433014dd0a5178bd3a54c068e79c24b4227a9bbd50ed7e52af3a978776506795","source":{"kind":"arxiv","id":"2607.00785","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.00785","created_at":"2026-07-02T01:17:55Z"},{"alias_kind":"arxiv_version","alias_value":"2607.00785v1","created_at":"2026-07-02T01:17:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.00785","created_at":"2026-07-02T01:17:55Z"},{"alias_kind":"pith_short_12","alias_value":"IMYBJXIKKF4L","created_at":"2026-07-02T01:17:55Z"},{"alias_kind":"pith_short_16","alias_value":"IMYBJXIKKF4L2OSU","created_at":"2026-07-02T01:17:55Z"},{"alias_kind":"pith_short_8","alias_value":"IMYBJXIK","created_at":"2026-07-02T01:17:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:IMYBJXIKKF4L2OSUYBUOPHBEWQ","target":"record","payload":{"canonical_record":{"source":{"id":"2607.00785","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-01T11:15:52Z","cross_cats_sorted":[],"title_canon_sha256":"4c2df41085635e62011fa56f3a19f998d38b71aff82a9a75528abe9f830aa509","abstract_canon_sha256":"9c56276812ae75bde66769ee6dcda3cfd61ef5b0c8c53d437950e936364e2797"},"schema_version":"1.0"},"canonical_sha256":"433014dd0a5178bd3a54c068e79c24b4227a9bbd50ed7e52af3a978776506795","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-02T01:17:55.330668Z","signature_b64":"wqloI5tG0GDqm0U4WHJ30+0Wa6ZZfUQNG9gUVoEVQwstE2waCmCnLU3D+8ivy3y2xOyVqDdGXLYeyLa6RuM5DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"433014dd0a5178bd3a54c068e79c24b4227a9bbd50ed7e52af3a978776506795","last_reissued_at":"2026-07-02T01:17:55.330282Z","signature_status":"signed_v1","first_computed_at":"2026-07-02T01:17:55.330282Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.00785","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":"2026-07-02T01:17:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"geXHqYfX3J+dww8iS6E0TH8XiELrZRcBjACLi7DAqL3F44cdq0w9PaeV8UnnpPlCpgjQRIpCdVMsm1d4GeJGDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T19:36:04.116345Z"},"content_sha256":"f81b3ae6ef5b1f7d028c1d3e8127b580380f9d8870d1d7cc18f060c405508d0c","schema_version":"1.0","event_id":"sha256:f81b3ae6ef5b1f7d028c1d3e8127b580380f9d8870d1d7cc18f060c405508d0c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:IMYBJXIKKF4L2OSUYBUOPHBEWQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Assembly bias and the redshift evolution of intrinsic alignments for LRGs","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Herle, D. Neumann, H. Hoekstra, N. E. Chisari","submitted_at":"2026-07-01T11:15:52Z","abstract_excerpt":"The intrinsic alignment (IA) of galaxies is one of the main contaminants to the weak lensing shear signal. Efforts to model it often assume that the alignment strength depends only on halo mass. In this work, we use the 2.8 Gpc box-size run of the $\\mathtt{FLAMINGO}$ suite to show that alignment amplitude, in addition to halo mass, depends on the formation redshift of the host haloes for an LRG-like sample. We show that the assembly histories of galaxies and haloes influence the alignment signal. After correcting for their mass evolution, we find that haloes that formed earlier have a higher a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.00785","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/2607.00785/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":"2026-07-02T01:17:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/QYzkR1DGx0aGV0nHDFZGDFPG0fWVMxqnQghtURSQqsSsSJWLReipc9J9TWKbKxhbaqLDoQL/bEgZRO+MD7aCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T19:36:04.116735Z"},"content_sha256":"fb546711b5fc76c4efa961d5a972d1d2b12f4a768bfb82464d6136ac5b237be4","schema_version":"1.0","event_id":"sha256:fb546711b5fc76c4efa961d5a972d1d2b12f4a768bfb82464d6136ac5b237be4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IMYBJXIKKF4L2OSUYBUOPHBEWQ/bundle.json","state_url":"https://pith.science/pith/IMYBJXIKKF4L2OSUYBUOPHBEWQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IMYBJXIKKF4L2OSUYBUOPHBEWQ/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":"2026-07-02T19:36:04Z","links":{"resolver":"https://pith.science/pith/IMYBJXIKKF4L2OSUYBUOPHBEWQ","bundle":"https://pith.science/pith/IMYBJXIKKF4L2OSUYBUOPHBEWQ/bundle.json","state":"https://pith.science/pith/IMYBJXIKKF4L2OSUYBUOPHBEWQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IMYBJXIKKF4L2OSUYBUOPHBEWQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:IMYBJXIKKF4L2OSUYBUOPHBEWQ","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":"9c56276812ae75bde66769ee6dcda3cfd61ef5b0c8c53d437950e936364e2797","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-01T11:15:52Z","title_canon_sha256":"4c2df41085635e62011fa56f3a19f998d38b71aff82a9a75528abe9f830aa509"},"schema_version":"1.0","source":{"id":"2607.00785","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.00785","created_at":"2026-07-02T01:17:55Z"},{"alias_kind":"arxiv_version","alias_value":"2607.00785v1","created_at":"2026-07-02T01:17:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.00785","created_at":"2026-07-02T01:17:55Z"},{"alias_kind":"pith_short_12","alias_value":"IMYBJXIKKF4L","created_at":"2026-07-02T01:17:55Z"},{"alias_kind":"pith_short_16","alias_value":"IMYBJXIKKF4L2OSU","created_at":"2026-07-02T01:17:55Z"},{"alias_kind":"pith_short_8","alias_value":"IMYBJXIK","created_at":"2026-07-02T01:17:55Z"}],"graph_snapshots":[{"event_id":"sha256:fb546711b5fc76c4efa961d5a972d1d2b12f4a768bfb82464d6136ac5b237be4","target":"graph","created_at":"2026-07-02T01:17:55Z","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/2607.00785/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The intrinsic alignment (IA) of galaxies is one of the main contaminants to the weak lensing shear signal. Efforts to model it often assume that the alignment strength depends only on halo mass. In this work, we use the 2.8 Gpc box-size run of the $\\mathtt{FLAMINGO}$ suite to show that alignment amplitude, in addition to halo mass, depends on the formation redshift of the host haloes for an LRG-like sample. We show that the assembly histories of galaxies and haloes influence the alignment signal. After correcting for their mass evolution, we find that haloes that formed earlier have a higher a","authors_text":"A. Herle, D. Neumann, H. Hoekstra, N. E. Chisari","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-01T11:15:52Z","title":"Assembly bias and the redshift evolution of intrinsic alignments for LRGs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.00785","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:f81b3ae6ef5b1f7d028c1d3e8127b580380f9d8870d1d7cc18f060c405508d0c","target":"record","created_at":"2026-07-02T01:17:55Z","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":"9c56276812ae75bde66769ee6dcda3cfd61ef5b0c8c53d437950e936364e2797","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-01T11:15:52Z","title_canon_sha256":"4c2df41085635e62011fa56f3a19f998d38b71aff82a9a75528abe9f830aa509"},"schema_version":"1.0","source":{"id":"2607.00785","kind":"arxiv","version":1}},"canonical_sha256":"433014dd0a5178bd3a54c068e79c24b4227a9bbd50ed7e52af3a978776506795","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"433014dd0a5178bd3a54c068e79c24b4227a9bbd50ed7e52af3a978776506795","first_computed_at":"2026-07-02T01:17:55.330282Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-02T01:17:55.330282Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wqloI5tG0GDqm0U4WHJ30+0Wa6ZZfUQNG9gUVoEVQwstE2waCmCnLU3D+8ivy3y2xOyVqDdGXLYeyLa6RuM5DA==","signature_status":"signed_v1","signed_at":"2026-07-02T01:17:55.330668Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.00785","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f81b3ae6ef5b1f7d028c1d3e8127b580380f9d8870d1d7cc18f060c405508d0c","sha256:fb546711b5fc76c4efa961d5a972d1d2b12f4a768bfb82464d6136ac5b237be4"],"state_sha256":"f358d48bfec169d75944c7d9e30a61b3696d115cff973d42c947cf29928a3f46"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MyDhRSQgO/YLytCaEsNqYYcQ1PMnflstoJWxZyIiIB54nQQfdb+H+WL/cIoV80HPsyW5ruy2qU6mY9zdMtRIAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T19:36:04.118850Z","bundle_sha256":"7c78eb6cfa91a52de6aad7a7058d3ceb1d24443bc0c383660ea259335bf84d55"}}