{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:Q5UVULWRBOUIPMEJCYGEQA7ILO","short_pith_number":"pith:Q5UVULWR","canonical_record":{"source":{"id":"astro-ph/0409707","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-29T08:14:09Z","cross_cats_sorted":[],"title_canon_sha256":"24774c75370f2bc72cfa963546d41146db79f6fe6325b744fd3f1e6dcc843f26","abstract_canon_sha256":"45ddc54307e03418f2adbe484f191faf763a5495f48692144e1c756d2f8b9923"},"schema_version":"1.0"},"canonical_sha256":"87695a2ed10ba887b089160c4803e85bbeddc2949e1122ebd9d75b8a68d039d1","source":{"kind":"arxiv","id":"astro-ph/0409707","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0409707","created_at":"2026-07-04T16:44:47Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0409707v1","created_at":"2026-07-04T16:44:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0409707","created_at":"2026-07-04T16:44:47Z"},{"alias_kind":"pith_short_12","alias_value":"Q5UVULWRBOUI","created_at":"2026-07-04T16:44:47Z"},{"alias_kind":"pith_short_16","alias_value":"Q5UVULWRBOUIPMEJ","created_at":"2026-07-04T16:44:47Z"},{"alias_kind":"pith_short_8","alias_value":"Q5UVULWR","created_at":"2026-07-04T16:44:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:Q5UVULWRBOUIPMEJCYGEQA7ILO","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0409707","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-29T08:14:09Z","cross_cats_sorted":[],"title_canon_sha256":"24774c75370f2bc72cfa963546d41146db79f6fe6325b744fd3f1e6dcc843f26","abstract_canon_sha256":"45ddc54307e03418f2adbe484f191faf763a5495f48692144e1c756d2f8b9923"},"schema_version":"1.0"},"canonical_sha256":"87695a2ed10ba887b089160c4803e85bbeddc2949e1122ebd9d75b8a68d039d1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:44:47.002923Z","signature_b64":"cTW0BHLf6Vv1oyAp/+q01rFn7+d1NCjJ1xlHEAHS35vWJFk1+rnoWzmc9AABuZkpDzdZyapMAe3Pc9UnYAwxBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"87695a2ed10ba887b089160c4803e85bbeddc2949e1122ebd9d75b8a68d039d1","last_reissued_at":"2026-07-04T16:44:47.002520Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:44:47.002520Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0409707","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":"2026-07-04T16:44:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AcrZ9R3L5oMwPvMFQX5n2453IRmAdfwEIPZBcwTwPjvnvfkc0cewOPskthReEwBtPb1K0GAFm1lgHaVd2mxSDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:44:43.828312Z"},"content_sha256":"32e96e7a4dbc4e557570d23054bc0320eeaa6ff172fad2dd59605059c53924e3","schema_version":"1.0","event_id":"sha256:32e96e7a4dbc4e557570d23054bc0320eeaa6ff172fad2dd59605059c53924e3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:Q5UVULWRBOUIPMEJCYGEQA7ILO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simulating the Soft X-ray excess in clusters of galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Diaferio, G. Murante, G. Tormen, K. Dolag, L.-M. Cheng, L. Moscardini, L. Tornatore, P. Tozzi, S. Borgani, X.-T. He","submitted_at":"2004-09-29T08:14:09Z","abstract_excerpt":"The detection of excess of soft X-ray or Extreme Ultraviolet (EUV) radiation, above the thermal contribution from the hot intracluster medium (ICM), has been a controversial subject ever since the initial discovery of this phenomenon. We use a large--scale hydrodynamical simulation of a concordance $\\Lambda$CDM model, to investigate the possible thermal origin for such an excess in a set of 20 simulated clusters having temperatures in the range 1--7 keV. Simulated clusters are analysed by mimicking the observational procedure applied to ROSAT--PSPC data, which for the first time showed evidenc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0409707","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/astro-ph/0409707/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":"2026-07-04T16:44:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ftk+wGVARX6zio5v1UjlFGE6JqVzFY/96Z9il3LWjDrkcw2TWaI38EOGTMg982eJufNbsdCRov4gKvV6/5IhCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:44:43.828810Z"},"content_sha256":"769bb1c7a6564b51c14377ecb303c08948614982669574b8976a9a017e48e38a","schema_version":"1.0","event_id":"sha256:769bb1c7a6564b51c14377ecb303c08948614982669574b8976a9a017e48e38a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q5UVULWRBOUIPMEJCYGEQA7ILO/bundle.json","state_url":"https://pith.science/pith/Q5UVULWRBOUIPMEJCYGEQA7ILO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q5UVULWRBOUIPMEJCYGEQA7ILO/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":"2026-08-03T18:44:43Z","links":{"resolver":"https://pith.science/pith/Q5UVULWRBOUIPMEJCYGEQA7ILO","bundle":"https://pith.science/pith/Q5UVULWRBOUIPMEJCYGEQA7ILO/bundle.json","state":"https://pith.science/pith/Q5UVULWRBOUIPMEJCYGEQA7ILO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q5UVULWRBOUIPMEJCYGEQA7ILO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:Q5UVULWRBOUIPMEJCYGEQA7ILO","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":"45ddc54307e03418f2adbe484f191faf763a5495f48692144e1c756d2f8b9923","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-29T08:14:09Z","title_canon_sha256":"24774c75370f2bc72cfa963546d41146db79f6fe6325b744fd3f1e6dcc843f26"},"schema_version":"1.0","source":{"id":"astro-ph/0409707","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0409707","created_at":"2026-07-04T16:44:47Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0409707v1","created_at":"2026-07-04T16:44:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0409707","created_at":"2026-07-04T16:44:47Z"},{"alias_kind":"pith_short_12","alias_value":"Q5UVULWRBOUI","created_at":"2026-07-04T16:44:47Z"},{"alias_kind":"pith_short_16","alias_value":"Q5UVULWRBOUIPMEJ","created_at":"2026-07-04T16:44:47Z"},{"alias_kind":"pith_short_8","alias_value":"Q5UVULWR","created_at":"2026-07-04T16:44:47Z"}],"graph_snapshots":[{"event_id":"sha256:769bb1c7a6564b51c14377ecb303c08948614982669574b8976a9a017e48e38a","target":"graph","created_at":"2026-07-04T16:44:47Z","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/0409707/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The detection of excess of soft X-ray or Extreme Ultraviolet (EUV) radiation, above the thermal contribution from the hot intracluster medium (ICM), has been a controversial subject ever since the initial discovery of this phenomenon. We use a large--scale hydrodynamical simulation of a concordance $\\Lambda$CDM model, to investigate the possible thermal origin for such an excess in a set of 20 simulated clusters having temperatures in the range 1--7 keV. Simulated clusters are analysed by mimicking the observational procedure applied to ROSAT--PSPC data, which for the first time showed evidenc","authors_text":"A. Diaferio, G. Murante, G. Tormen, K. Dolag, L.-M. Cheng, L. Moscardini, L. Tornatore, P. Tozzi, S. Borgani, X.-T. He","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-09-29T08:14:09Z","title":"Simulating the Soft X-ray excess in clusters of galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0409707","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":"sha256:32e96e7a4dbc4e557570d23054bc0320eeaa6ff172fad2dd59605059c53924e3","target":"record","created_at":"2026-07-04T16:44:47Z","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":"45ddc54307e03418f2adbe484f191faf763a5495f48692144e1c756d2f8b9923","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-29T08:14:09Z","title_canon_sha256":"24774c75370f2bc72cfa963546d41146db79f6fe6325b744fd3f1e6dcc843f26"},"schema_version":"1.0","source":{"id":"astro-ph/0409707","kind":"arxiv","version":1}},"canonical_sha256":"87695a2ed10ba887b089160c4803e85bbeddc2949e1122ebd9d75b8a68d039d1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"87695a2ed10ba887b089160c4803e85bbeddc2949e1122ebd9d75b8a68d039d1","first_computed_at":"2026-07-04T16:44:47.002520Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:44:47.002520Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cTW0BHLf6Vv1oyAp/+q01rFn7+d1NCjJ1xlHEAHS35vWJFk1+rnoWzmc9AABuZkpDzdZyapMAe3Pc9UnYAwxBw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:44:47.002923Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0409707","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:32e96e7a4dbc4e557570d23054bc0320eeaa6ff172fad2dd59605059c53924e3","sha256:769bb1c7a6564b51c14377ecb303c08948614982669574b8976a9a017e48e38a"],"state_sha256":"0a7d12689e989955dd09b48d0fb4fcc0ae99a541bc86221399de965863128f22"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jOmPewjVQi3Um/XU/4of00Zp1Gg6iVUrAdbB8ug/qgoqHaK9JIk7oGd+ffGFrYSmsDbfQjtjYQnBtV9LXjLnBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T18:44:43.832706Z","bundle_sha256":"ca58782202d7b2cce39ec9240dea39ddfa7aebcbf2d459607049bd44f2510b5d"}}