{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:PYM6AXMMS2SJCBTKUCYGB32M45","short_pith_number":"pith:PYM6AXMM","canonical_record":{"source":{"id":"2010.09617","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-10-19T15:57:42Z","cross_cats_sorted":[],"title_canon_sha256":"c5c6db2916edf72d17b7fb61beb60a2bccd60054d5538a03dbea1ba6d135b4a2","abstract_canon_sha256":"0db4588a5ef0915f6ee66541eef514ec52c37f9c1cdbaec18da7cac7d69ff126"},"schema_version":"1.0"},"canonical_sha256":"7e19e05d8c96a491066aa0b060ef4ce76d34ec9c717085dd7ad94a231cbf11ed","source":{"kind":"arxiv","id":"2010.09617","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.09617","created_at":"2026-07-05T01:49:55Z"},{"alias_kind":"arxiv_version","alias_value":"2010.09617v2","created_at":"2026-07-05T01:49:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.09617","created_at":"2026-07-05T01:49:55Z"},{"alias_kind":"pith_short_12","alias_value":"PYM6AXMMS2SJ","created_at":"2026-07-05T01:49:55Z"},{"alias_kind":"pith_short_16","alias_value":"PYM6AXMMS2SJCBTK","created_at":"2026-07-05T01:49:55Z"},{"alias_kind":"pith_short_8","alias_value":"PYM6AXMM","created_at":"2026-07-05T01:49:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:PYM6AXMMS2SJCBTKUCYGB32M45","target":"record","payload":{"canonical_record":{"source":{"id":"2010.09617","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-10-19T15:57:42Z","cross_cats_sorted":[],"title_canon_sha256":"c5c6db2916edf72d17b7fb61beb60a2bccd60054d5538a03dbea1ba6d135b4a2","abstract_canon_sha256":"0db4588a5ef0915f6ee66541eef514ec52c37f9c1cdbaec18da7cac7d69ff126"},"schema_version":"1.0"},"canonical_sha256":"7e19e05d8c96a491066aa0b060ef4ce76d34ec9c717085dd7ad94a231cbf11ed","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:49:55.913282Z","signature_b64":"503HTk2b5RR9ME6dSi/g0TNmC/G5+SKPbKcC04hFR9Xoloek1qqDwOPiuSbl7vM15O2AkbXePFG6tI4P+/Q+CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e19e05d8c96a491066aa0b060ef4ce76d34ec9c717085dd7ad94a231cbf11ed","last_reissued_at":"2026-07-05T01:49:55.912930Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:49:55.912930Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2010.09617","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":"2026-07-05T01:49:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"odvGaNLkc9iYqK7dG8x4FVxGvn3K+8s7QZlIfRKhWWVQHEBmnjlTUMNZhOkVlclZn9B/2pSh177bAu7UMh/9DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T23:12:11.273611Z"},"content_sha256":"25ea7da7d65725997a510160e6f6bc45e05e7ea904202b541f6ebf965804d6ec","schema_version":"1.0","event_id":"sha256:25ea7da7d65725997a510160e6f6bc45e05e7ea904202b541f6ebf965804d6ec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:PYM6AXMMS2SJCBTKUCYGB32M45","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Brightest Cluster Galaxies: the centre can(not?) hold","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Christine Jones, Cinthia Ragone-Figueroa, Diego Garcia Lambas, Elena A. Romashkova, Elena Rasia, Felipe Andrade-Santos, Kishore C. Patra, Michael J. West, Rain Kipper, Roberto De Propris, Stefano Borgani, William Forman","submitted_at":"2020-10-19T15:57:42Z","abstract_excerpt":"We explore the persistence of the alignment of brightest cluster galaxies (BCGs) with their local environment. We find that a significant fraction of BCGs do not coincide with the centroid of the X-ray gas distribution and/or show peculiar velocities (they are not at rest with respect to the cluster mean). Despite this, we find that BCGs are generally aligned with the cluster mass distribution even when they have significant offsets from the X-ray centre and significant peculiar velocities. The large offsets are not consistent with simple theoretical models. To account for these observations B"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.09617","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/2010.09617/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":"2026-07-05T01:49:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aFsKD9KWeWciMfcGn+76r0v2rEmVeFc9NtLochG+QCFx59lLHvtPyWTTNOTcDmHNU1cX+8/SXSj0+1hDRhpLAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T23:12:11.273984Z"},"content_sha256":"4a96fb02df8ea9dea2eb88b0f376ce09d876cc2af5b217b61ecb65925f98e7d2","schema_version":"1.0","event_id":"sha256:4a96fb02df8ea9dea2eb88b0f376ce09d876cc2af5b217b61ecb65925f98e7d2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PYM6AXMMS2SJCBTKUCYGB32M45/bundle.json","state_url":"https://pith.science/pith/PYM6AXMMS2SJCBTKUCYGB32M45/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PYM6AXMMS2SJCBTKUCYGB32M45/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":"2026-08-05T23:12:11Z","links":{"resolver":"https://pith.science/pith/PYM6AXMMS2SJCBTKUCYGB32M45","bundle":"https://pith.science/pith/PYM6AXMMS2SJCBTKUCYGB32M45/bundle.json","state":"https://pith.science/pith/PYM6AXMMS2SJCBTKUCYGB32M45/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PYM6AXMMS2SJCBTKUCYGB32M45/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:PYM6AXMMS2SJCBTKUCYGB32M45","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":"0db4588a5ef0915f6ee66541eef514ec52c37f9c1cdbaec18da7cac7d69ff126","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-10-19T15:57:42Z","title_canon_sha256":"c5c6db2916edf72d17b7fb61beb60a2bccd60054d5538a03dbea1ba6d135b4a2"},"schema_version":"1.0","source":{"id":"2010.09617","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.09617","created_at":"2026-07-05T01:49:55Z"},{"alias_kind":"arxiv_version","alias_value":"2010.09617v2","created_at":"2026-07-05T01:49:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.09617","created_at":"2026-07-05T01:49:55Z"},{"alias_kind":"pith_short_12","alias_value":"PYM6AXMMS2SJ","created_at":"2026-07-05T01:49:55Z"},{"alias_kind":"pith_short_16","alias_value":"PYM6AXMMS2SJCBTK","created_at":"2026-07-05T01:49:55Z"},{"alias_kind":"pith_short_8","alias_value":"PYM6AXMM","created_at":"2026-07-05T01:49:55Z"}],"graph_snapshots":[{"event_id":"sha256:4a96fb02df8ea9dea2eb88b0f376ce09d876cc2af5b217b61ecb65925f98e7d2","target":"graph","created_at":"2026-07-05T01:49:55Z","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/2010.09617/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We explore the persistence of the alignment of brightest cluster galaxies (BCGs) with their local environment. We find that a significant fraction of BCGs do not coincide with the centroid of the X-ray gas distribution and/or show peculiar velocities (they are not at rest with respect to the cluster mean). Despite this, we find that BCGs are generally aligned with the cluster mass distribution even when they have significant offsets from the X-ray centre and significant peculiar velocities. The large offsets are not consistent with simple theoretical models. To account for these observations B","authors_text":"Christine Jones, Cinthia Ragone-Figueroa, Diego Garcia Lambas, Elena A. Romashkova, Elena Rasia, Felipe Andrade-Santos, Kishore C. Patra, Michael J. West, Rain Kipper, Roberto De Propris, Stefano Borgani, William Forman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-10-19T15:57:42Z","title":"Brightest Cluster Galaxies: the centre can(not?) hold"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.09617","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":"sha256:25ea7da7d65725997a510160e6f6bc45e05e7ea904202b541f6ebf965804d6ec","target":"record","created_at":"2026-07-05T01:49:55Z","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":"0db4588a5ef0915f6ee66541eef514ec52c37f9c1cdbaec18da7cac7d69ff126","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-10-19T15:57:42Z","title_canon_sha256":"c5c6db2916edf72d17b7fb61beb60a2bccd60054d5538a03dbea1ba6d135b4a2"},"schema_version":"1.0","source":{"id":"2010.09617","kind":"arxiv","version":2}},"canonical_sha256":"7e19e05d8c96a491066aa0b060ef4ce76d34ec9c717085dd7ad94a231cbf11ed","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e19e05d8c96a491066aa0b060ef4ce76d34ec9c717085dd7ad94a231cbf11ed","first_computed_at":"2026-07-05T01:49:55.912930Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:49:55.912930Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"503HTk2b5RR9ME6dSi/g0TNmC/G5+SKPbKcC04hFR9Xoloek1qqDwOPiuSbl7vM15O2AkbXePFG6tI4P+/Q+CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:49:55.913282Z","signed_message":"canonical_sha256_bytes"},"source_id":"2010.09617","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:25ea7da7d65725997a510160e6f6bc45e05e7ea904202b541f6ebf965804d6ec","sha256:4a96fb02df8ea9dea2eb88b0f376ce09d876cc2af5b217b61ecb65925f98e7d2"],"state_sha256":"f2ba3e410f3a11dfd8a835c1395cdb7a00478217f611a8a0f1a52e00ae61e3bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R1yp1qFnofqNed6JZK8VSxaW4DIEDUfainv1aCP4ecPEJgpzYmhf57IK7fdyCEOTX+r42R46IwBsCG+i4VgHCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T23:12:11.276446Z","bundle_sha256":"b99a02ba5044fec340c4419a7f83d546bf469a3b41e60e41ed0821ab9ea3c2a6"}}