{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:ZPDNRJGL254LQ6ENS2XHBCJHB2","short_pith_number":"pith:ZPDNRJGL","canonical_record":{"source":{"id":"astro-ph/0504206","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-04-08T15:49:30Z","cross_cats_sorted":[],"title_canon_sha256":"352a9dcf04feba4a5371917c67244224384f3564d5a207247164a4e9c8d51054","abstract_canon_sha256":"0d100062f9609694d03bd658834bd9c7023e088a34316b6c9e4f8d399926a558"},"schema_version":"1.0"},"canonical_sha256":"cbc6d8a4cbd778b8788d96ae7089270e943532ba91a291e37cd8c0be1c0b0ffe","source":{"kind":"arxiv","id":"astro-ph/0504206","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0504206","created_at":"2026-07-04T14:49:54Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0504206v2","created_at":"2026-07-04T14:49:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0504206","created_at":"2026-07-04T14:49:54Z"},{"alias_kind":"pith_short_12","alias_value":"ZPDNRJGL254L","created_at":"2026-07-04T14:49:54Z"},{"alias_kind":"pith_short_16","alias_value":"ZPDNRJGL254LQ6EN","created_at":"2026-07-04T14:49:54Z"},{"alias_kind":"pith_short_8","alias_value":"ZPDNRJGL","created_at":"2026-07-04T14:49:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:ZPDNRJGL254LQ6ENS2XHBCJHB2","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0504206","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-04-08T15:49:30Z","cross_cats_sorted":[],"title_canon_sha256":"352a9dcf04feba4a5371917c67244224384f3564d5a207247164a4e9c8d51054","abstract_canon_sha256":"0d100062f9609694d03bd658834bd9c7023e088a34316b6c9e4f8d399926a558"},"schema_version":"1.0"},"canonical_sha256":"cbc6d8a4cbd778b8788d96ae7089270e943532ba91a291e37cd8c0be1c0b0ffe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:49:54.506252Z","signature_b64":"NdH3WU14i9eFdmv2T/fA8VsVNvXuvYBr23sUtizGOIOQXWCWV4tLIS+RIcdRxi3jB5BY8J93KnlEbKWlLX2KBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cbc6d8a4cbd778b8788d96ae7089270e943532ba91a291e37cd8c0be1c0b0ffe","last_reissued_at":"2026-07-04T14:49:54.505846Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:49:54.505846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0504206","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":"2026-07-04T14:49:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I0RwTAgXnH1UxOGki+SGsdZnpZUTXTVSxCbwSfWPgUcqc+CgQ8vkWLcSponKXKu6xtui5D22tT3ZrCBwdMYTCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T22:33:03.662358Z"},"content_sha256":"6ac198fa2521abe0ec0e05ce8652fac5bf77d5f79b849ec7e5097350e43d82ed","schema_version":"1.0","event_id":"sha256:6ac198fa2521abe0ec0e05ce8652fac5bf77d5f79b849ec7e5097350e43d82ed"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:ZPDNRJGL254LQ6ENS2XHBCJHB2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The impact of gas physics on strong cluster lensing","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Ewald Puchwein, Klaus Dolag, Massimo Meneghetti, Matthias Bartelmann","submitted_at":"2005-04-08T15:49:30Z","abstract_excerpt":"Previous studies of strong gravitational lensing by galaxy clusters neglected the potential impact of the intracluster gas. Here, we compare simulations of strong cluster lensing including gas physics at increasing levels of complexity, i.e. with adiabatic, cooling, star-forming, feedback-receiving, and thermally conducting gas, and with different implementations of the artificial viscosity in the SPH simulations. Each cluster was simulated starting from the same initial conditions such as to allow directly comparing the simulated clusters. We compare the clusters' shapes, dynamics and density"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0504206","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/astro-ph/0504206/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":"2026-07-04T14:49:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cGintfy0Vdr1xjrpG/dFwhCYIhtjBeBc9/84vYnsQfEp03++3es+thdCz9pmGqS+8+ukWePy1c6lXBs12B/QCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T22:33:03.663396Z"},"content_sha256":"ea8534ed90646b001ea555028e84cebff4db1094ca5f370eb8785344377b0c71","schema_version":"1.0","event_id":"sha256:ea8534ed90646b001ea555028e84cebff4db1094ca5f370eb8785344377b0c71"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZPDNRJGL254LQ6ENS2XHBCJHB2/bundle.json","state_url":"https://pith.science/pith/ZPDNRJGL254LQ6ENS2XHBCJHB2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZPDNRJGL254LQ6ENS2XHBCJHB2/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":"2026-08-04T22:33:03Z","links":{"resolver":"https://pith.science/pith/ZPDNRJGL254LQ6ENS2XHBCJHB2","bundle":"https://pith.science/pith/ZPDNRJGL254LQ6ENS2XHBCJHB2/bundle.json","state":"https://pith.science/pith/ZPDNRJGL254LQ6ENS2XHBCJHB2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZPDNRJGL254LQ6ENS2XHBCJHB2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:ZPDNRJGL254LQ6ENS2XHBCJHB2","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":"0d100062f9609694d03bd658834bd9c7023e088a34316b6c9e4f8d399926a558","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-04-08T15:49:30Z","title_canon_sha256":"352a9dcf04feba4a5371917c67244224384f3564d5a207247164a4e9c8d51054"},"schema_version":"1.0","source":{"id":"astro-ph/0504206","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0504206","created_at":"2026-07-04T14:49:54Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0504206v2","created_at":"2026-07-04T14:49:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0504206","created_at":"2026-07-04T14:49:54Z"},{"alias_kind":"pith_short_12","alias_value":"ZPDNRJGL254L","created_at":"2026-07-04T14:49:54Z"},{"alias_kind":"pith_short_16","alias_value":"ZPDNRJGL254LQ6EN","created_at":"2026-07-04T14:49:54Z"},{"alias_kind":"pith_short_8","alias_value":"ZPDNRJGL","created_at":"2026-07-04T14:49:54Z"}],"graph_snapshots":[{"event_id":"sha256:ea8534ed90646b001ea555028e84cebff4db1094ca5f370eb8785344377b0c71","target":"graph","created_at":"2026-07-04T14:49:54Z","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/astro-ph/0504206/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Previous studies of strong gravitational lensing by galaxy clusters neglected the potential impact of the intracluster gas. Here, we compare simulations of strong cluster lensing including gas physics at increasing levels of complexity, i.e. with adiabatic, cooling, star-forming, feedback-receiving, and thermally conducting gas, and with different implementations of the artificial viscosity in the SPH simulations. Each cluster was simulated starting from the same initial conditions such as to allow directly comparing the simulated clusters. We compare the clusters' shapes, dynamics and density","authors_text":"Ewald Puchwein, Klaus Dolag, Massimo Meneghetti, Matthias Bartelmann","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-04-08T15:49:30Z","title":"The impact of gas physics on strong cluster lensing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0504206","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":"sha256:6ac198fa2521abe0ec0e05ce8652fac5bf77d5f79b849ec7e5097350e43d82ed","target":"record","created_at":"2026-07-04T14:49:54Z","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":"0d100062f9609694d03bd658834bd9c7023e088a34316b6c9e4f8d399926a558","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-04-08T15:49:30Z","title_canon_sha256":"352a9dcf04feba4a5371917c67244224384f3564d5a207247164a4e9c8d51054"},"schema_version":"1.0","source":{"id":"astro-ph/0504206","kind":"arxiv","version":2}},"canonical_sha256":"cbc6d8a4cbd778b8788d96ae7089270e943532ba91a291e37cd8c0be1c0b0ffe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cbc6d8a4cbd778b8788d96ae7089270e943532ba91a291e37cd8c0be1c0b0ffe","first_computed_at":"2026-07-04T14:49:54.505846Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:49:54.505846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NdH3WU14i9eFdmv2T/fA8VsVNvXuvYBr23sUtizGOIOQXWCWV4tLIS+RIcdRxi3jB5BY8J93KnlEbKWlLX2KBg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:49:54.506252Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0504206","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6ac198fa2521abe0ec0e05ce8652fac5bf77d5f79b849ec7e5097350e43d82ed","sha256:ea8534ed90646b001ea555028e84cebff4db1094ca5f370eb8785344377b0c71"],"state_sha256":"1a120b4431811932c29313c2b0c1bef467a2edaf6032fd07241dd14b4d859b68"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TjvgkO3u4UaZqRAaYp1ncbEEbPIyJdhJyDp5oD3kFOSM+RWN9nu1Ziai6oQo7AyRPsvoF47BQaIT4beKbUMMAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T22:33:03.668945Z","bundle_sha256":"dda6926f8ad5d117eb6379f4bf2a4277d8e36b79559bf3df7314bf466d833bf8"}}