{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:ZSCF5WA42VWQXHZU2TQ2HCVELO","short_pith_number":"pith:ZSCF5WA4","canonical_record":{"source":{"id":"1508.01037","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-05T11:25:41Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"3dabb3c633ed136f3da8e118fb7b19539fa689a63b3171ed3dca13738ded695f","abstract_canon_sha256":"9ba6209b7d3eecbb4d7c25cb39769ca340ccd1f7eec7f30f016ed375b3a1449d"},"schema_version":"1.0"},"canonical_sha256":"cc845ed81cd56d0b9f34d4e1a38aa45bbc0d97d26ef81dcdc8e0c010fdb44b61","source":{"kind":"arxiv","id":"1508.01037","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.01037","created_at":"2026-05-18T01:32:59Z"},{"alias_kind":"arxiv_version","alias_value":"1508.01037v1","created_at":"2026-05-18T01:32:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.01037","created_at":"2026-05-18T01:32:59Z"},{"alias_kind":"pith_short_12","alias_value":"ZSCF5WA42VWQ","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZSCF5WA42VWQXHZU","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZSCF5WA4","created_at":"2026-05-18T12:29:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:ZSCF5WA42VWQXHZU2TQ2HCVELO","target":"record","payload":{"canonical_record":{"source":{"id":"1508.01037","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-05T11:25:41Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"3dabb3c633ed136f3da8e118fb7b19539fa689a63b3171ed3dca13738ded695f","abstract_canon_sha256":"9ba6209b7d3eecbb4d7c25cb39769ca340ccd1f7eec7f30f016ed375b3a1449d"},"schema_version":"1.0"},"canonical_sha256":"cc845ed81cd56d0b9f34d4e1a38aa45bbc0d97d26ef81dcdc8e0c010fdb44b61","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:32:59.427784Z","signature_b64":"kRwO3yNBdsCzQdAPNwpQVWqjftz5bnh2WP2ngggGzl0lM0kolhygPejqk97UQPXF80DA8fDBr36C6N3RN4jKDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc845ed81cd56d0b9f34d4e1a38aa45bbc0d97d26ef81dcdc8e0c010fdb44b61","last_reissued_at":"2026-05-18T01:32:59.427344Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:32:59.427344Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.01037","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":"2026-05-18T01:32:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q9lgU4byCADi3upA8RScCadLj0MXE9PDS8HEUSS8pTA5U17eC+GxOcqChcE5J6UjIaHyUWo3F7Ecthumf7CFDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:46:43.947666Z"},"content_sha256":"746a5fe2f6cb7f014c7008a9ee679794191d77aabc0214c7c357233589448b2c","schema_version":"1.0","event_id":"sha256:746a5fe2f6cb7f014c7008a9ee679794191d77aabc0214c7c357233589448b2c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:ZSCF5WA42VWQXHZU2TQ2HCVELO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"X-ray Analysis of Filaments in Galaxy Clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. C. Fabian, J. S. Sanders, P. Kosec, S. A. Walker","submitted_at":"2015-08-05T11:25:41Z","abstract_excerpt":"We perform a detailed X-ray study of the filaments surrounding the brightest cluster galaxies in a sample of nearby galaxy clusters using deep Chandra observations, namely the Perseus, Centaurus and Virgo clusters, and Abell 1795. We compare the X-ray properties and spectra of the filaments in all of these systems, and find that their Chandra X-ray spectra are all broadly consistent with an absorbed two temperature thermal model, with temperature components at 0.75 and 1.7 keV. We find that it is also possible to model the Chandra ACIS filament spectra with a charge exchange model provided a t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.01037","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":""},"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":"2026-05-18T01:32:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vofPOrmhok0dUjz1itwAPcp6rmasjk9KCn3SSL/fI3IhteoYUezVrMI1/Jkpsa0kCP3Fhrp1JKEd60HlnztTAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:46:43.948012Z"},"content_sha256":"38d38351f55a2b36a9a9a419bff46c77ad7e04e96b873e3171520a1def20e191","schema_version":"1.0","event_id":"sha256:38d38351f55a2b36a9a9a419bff46c77ad7e04e96b873e3171520a1def20e191"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZSCF5WA42VWQXHZU2TQ2HCVELO/bundle.json","state_url":"https://pith.science/pith/ZSCF5WA42VWQXHZU2TQ2HCVELO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZSCF5WA42VWQXHZU2TQ2HCVELO/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":"2026-05-28T13:46:43Z","links":{"resolver":"https://pith.science/pith/ZSCF5WA42VWQXHZU2TQ2HCVELO","bundle":"https://pith.science/pith/ZSCF5WA42VWQXHZU2TQ2HCVELO/bundle.json","state":"https://pith.science/pith/ZSCF5WA42VWQXHZU2TQ2HCVELO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZSCF5WA42VWQXHZU2TQ2HCVELO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ZSCF5WA42VWQXHZU2TQ2HCVELO","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":"9ba6209b7d3eecbb4d7c25cb39769ca340ccd1f7eec7f30f016ed375b3a1449d","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-05T11:25:41Z","title_canon_sha256":"3dabb3c633ed136f3da8e118fb7b19539fa689a63b3171ed3dca13738ded695f"},"schema_version":"1.0","source":{"id":"1508.01037","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.01037","created_at":"2026-05-18T01:32:59Z"},{"alias_kind":"arxiv_version","alias_value":"1508.01037v1","created_at":"2026-05-18T01:32:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.01037","created_at":"2026-05-18T01:32:59Z"},{"alias_kind":"pith_short_12","alias_value":"ZSCF5WA42VWQ","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZSCF5WA42VWQXHZU","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZSCF5WA4","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:38d38351f55a2b36a9a9a419bff46c77ad7e04e96b873e3171520a1def20e191","target":"graph","created_at":"2026-05-18T01:32:59Z","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"},"paper":{"abstract_excerpt":"We perform a detailed X-ray study of the filaments surrounding the brightest cluster galaxies in a sample of nearby galaxy clusters using deep Chandra observations, namely the Perseus, Centaurus and Virgo clusters, and Abell 1795. We compare the X-ray properties and spectra of the filaments in all of these systems, and find that their Chandra X-ray spectra are all broadly consistent with an absorbed two temperature thermal model, with temperature components at 0.75 and 1.7 keV. We find that it is also possible to model the Chandra ACIS filament spectra with a charge exchange model provided a t","authors_text":"A. C. Fabian, J. S. Sanders, P. Kosec, S. A. Walker","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-05T11:25:41Z","title":"X-ray Analysis of Filaments in Galaxy Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.01037","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":"sha256:746a5fe2f6cb7f014c7008a9ee679794191d77aabc0214c7c357233589448b2c","target":"record","created_at":"2026-05-18T01:32:59Z","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":"9ba6209b7d3eecbb4d7c25cb39769ca340ccd1f7eec7f30f016ed375b3a1449d","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-05T11:25:41Z","title_canon_sha256":"3dabb3c633ed136f3da8e118fb7b19539fa689a63b3171ed3dca13738ded695f"},"schema_version":"1.0","source":{"id":"1508.01037","kind":"arxiv","version":1}},"canonical_sha256":"cc845ed81cd56d0b9f34d4e1a38aa45bbc0d97d26ef81dcdc8e0c010fdb44b61","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc845ed81cd56d0b9f34d4e1a38aa45bbc0d97d26ef81dcdc8e0c010fdb44b61","first_computed_at":"2026-05-18T01:32:59.427344Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:32:59.427344Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kRwO3yNBdsCzQdAPNwpQVWqjftz5bnh2WP2ngggGzl0lM0kolhygPejqk97UQPXF80DA8fDBr36C6N3RN4jKDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:32:59.427784Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.01037","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:746a5fe2f6cb7f014c7008a9ee679794191d77aabc0214c7c357233589448b2c","sha256:38d38351f55a2b36a9a9a419bff46c77ad7e04e96b873e3171520a1def20e191"],"state_sha256":"cb4c5d1b7e511ec3e6d38175e570d6163ed4574d6a528a35dd207fb11a7dc5f6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uWYiCypRMuXMmSIFy/vbgmZj6c/x5bgYvPue7PNHu+UQG1pwr+Vm2bdyfCUOMCC7wvS1FRpDRi51KyJPsrlJBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T13:46:43.950100Z","bundle_sha256":"00ea5454f310c4a6f8b6c02a9cc5b0480ac4d16c3e582906609e6ad5844789f2"}}