{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:GACPLNFEDZRY5ND5TZZXEEIZ32","short_pith_number":"pith:GACPLNFE","canonical_record":{"source":{"id":"1310.8389","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-31T05:43:01Z","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"title_canon_sha256":"9316e33edf29e20a68718f77a96df7f623388cc5b3d80af19b0576c7771f8e35","abstract_canon_sha256":"c8f5c29bb4fb66b327ca46e7c57f5727bfcc840f8783b8969847c9d7aa0ab429"},"schema_version":"1.0"},"canonical_sha256":"3004f5b4a41e638eb47d9e73721119de8a1b3bd4c2e6c8b3b31aaac6c2a282f0","source":{"kind":"arxiv","id":"1310.8389","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.8389","created_at":"2026-05-18T00:48:47Z"},{"alias_kind":"arxiv_version","alias_value":"1310.8389v2","created_at":"2026-05-18T00:48:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.8389","created_at":"2026-05-18T00:48:47Z"},{"alias_kind":"pith_short_12","alias_value":"GACPLNFEDZRY","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"GACPLNFEDZRY5ND5","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"GACPLNFE","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:GACPLNFEDZRY5ND5TZZXEEIZ32","target":"record","payload":{"canonical_record":{"source":{"id":"1310.8389","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-31T05:43:01Z","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"title_canon_sha256":"9316e33edf29e20a68718f77a96df7f623388cc5b3d80af19b0576c7771f8e35","abstract_canon_sha256":"c8f5c29bb4fb66b327ca46e7c57f5727bfcc840f8783b8969847c9d7aa0ab429"},"schema_version":"1.0"},"canonical_sha256":"3004f5b4a41e638eb47d9e73721119de8a1b3bd4c2e6c8b3b31aaac6c2a282f0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:47.908655Z","signature_b64":"ozU5lgAvtUIb/Ww2352VMJewCnx6b8hY92cFwQ61xLVF/X++6bY+8rGbJhV7Af12oK9NJJrS8MaprE6u6jYFBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3004f5b4a41e638eb47d9e73721119de8a1b3bd4c2e6c8b3b31aaac6c2a282f0","last_reissued_at":"2026-05-18T00:48:47.907777Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:47.907777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.8389","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":"2026-05-18T00:48:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3R1eI8q/x27bQe5uXpwjkvaDqTUJh4Slq/LHXGsLXm5MNliBqJ7qM9MzgCYrHa6WKZY46MZzjBUjeSnkZgXbCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T19:28:42.972824Z"},"content_sha256":"3f4360fee64f1e4dbc521591f140ea2cae2924518b76bcaa3d5b2a897f81440e","schema_version":"1.0","event_id":"sha256:3f4360fee64f1e4dbc521591f140ea2cae2924518b76bcaa3d5b2a897f81440e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:GACPLNFEDZRY5ND5TZZXEEIZ32","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gas clumping in galaxy clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"D. Eckert, F. Gastaldello, F. Vazza, M. Roncarelli, M. Rossetti, S. Ettori, S. Molendi","submitted_at":"2013-10-31T05:43:01Z","abstract_excerpt":"The reconstruction of galaxy cluster's gas density profiles is usually performed by assuming spherical symmetry and averaging the observed X-ray emission in circular annuli. In the case of a very inhomogeneous and asymmetric gas distribution, this method has been shown to return biased results in numerical simulations because of the $n^2$ dependence of the X-ray emissivity. We propose a method to recover the true density profiles in the presence of inhomogeneities, based on the derivation of the azimuthal median of the surface brightness in concentric annuli. We demonstrate the performance of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.8389","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":""},"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":"2026-05-18T00:48:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FqcV6yBgsLkpi6cAxmSonwXlBpxJfKCRiZ0iCssLbl9Xk8liqjXgo0H/2J2/jLQ8zV5xIhlRljdFgMwj+dM8Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T19:28:42.973165Z"},"content_sha256":"e84989ff4874c42478b1d8cb557de378e51a4d297dff7f604082720146e3f893","schema_version":"1.0","event_id":"sha256:e84989ff4874c42478b1d8cb557de378e51a4d297dff7f604082720146e3f893"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GACPLNFEDZRY5ND5TZZXEEIZ32/bundle.json","state_url":"https://pith.science/pith/GACPLNFEDZRY5ND5TZZXEEIZ32/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GACPLNFEDZRY5ND5TZZXEEIZ32/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":"2026-06-04T19:28:42Z","links":{"resolver":"https://pith.science/pith/GACPLNFEDZRY5ND5TZZXEEIZ32","bundle":"https://pith.science/pith/GACPLNFEDZRY5ND5TZZXEEIZ32/bundle.json","state":"https://pith.science/pith/GACPLNFEDZRY5ND5TZZXEEIZ32/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GACPLNFEDZRY5ND5TZZXEEIZ32/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:GACPLNFEDZRY5ND5TZZXEEIZ32","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":"c8f5c29bb4fb66b327ca46e7c57f5727bfcc840f8783b8969847c9d7aa0ab429","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-31T05:43:01Z","title_canon_sha256":"9316e33edf29e20a68718f77a96df7f623388cc5b3d80af19b0576c7771f8e35"},"schema_version":"1.0","source":{"id":"1310.8389","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.8389","created_at":"2026-05-18T00:48:47Z"},{"alias_kind":"arxiv_version","alias_value":"1310.8389v2","created_at":"2026-05-18T00:48:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.8389","created_at":"2026-05-18T00:48:47Z"},{"alias_kind":"pith_short_12","alias_value":"GACPLNFEDZRY","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"GACPLNFEDZRY5ND5","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"GACPLNFE","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:e84989ff4874c42478b1d8cb557de378e51a4d297dff7f604082720146e3f893","target":"graph","created_at":"2026-05-18T00:48:47Z","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"},"paper":{"abstract_excerpt":"The reconstruction of galaxy cluster's gas density profiles is usually performed by assuming spherical symmetry and averaging the observed X-ray emission in circular annuli. In the case of a very inhomogeneous and asymmetric gas distribution, this method has been shown to return biased results in numerical simulations because of the $n^2$ dependence of the X-ray emissivity. We propose a method to recover the true density profiles in the presence of inhomogeneities, based on the derivation of the azimuthal median of the surface brightness in concentric annuli. We demonstrate the performance of ","authors_text":"D. Eckert, F. Gastaldello, F. Vazza, M. Roncarelli, M. Rossetti, S. Ettori, S. Molendi","cross_cats":["astro-ph.HE","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-31T05:43:01Z","title":"Gas clumping in galaxy clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.8389","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":"sha256:3f4360fee64f1e4dbc521591f140ea2cae2924518b76bcaa3d5b2a897f81440e","target":"record","created_at":"2026-05-18T00:48:47Z","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":"c8f5c29bb4fb66b327ca46e7c57f5727bfcc840f8783b8969847c9d7aa0ab429","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-31T05:43:01Z","title_canon_sha256":"9316e33edf29e20a68718f77a96df7f623388cc5b3d80af19b0576c7771f8e35"},"schema_version":"1.0","source":{"id":"1310.8389","kind":"arxiv","version":2}},"canonical_sha256":"3004f5b4a41e638eb47d9e73721119de8a1b3bd4c2e6c8b3b31aaac6c2a282f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3004f5b4a41e638eb47d9e73721119de8a1b3bd4c2e6c8b3b31aaac6c2a282f0","first_computed_at":"2026-05-18T00:48:47.907777Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:47.907777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ozU5lgAvtUIb/Ww2352VMJewCnx6b8hY92cFwQ61xLVF/X++6bY+8rGbJhV7Af12oK9NJJrS8MaprE6u6jYFBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:47.908655Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.8389","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3f4360fee64f1e4dbc521591f140ea2cae2924518b76bcaa3d5b2a897f81440e","sha256:e84989ff4874c42478b1d8cb557de378e51a4d297dff7f604082720146e3f893"],"state_sha256":"82f120efae632719dae2f36e1575e353f95bef15cd2e69aba0d4849a4fa0e73f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/ID8CSkFbKwyGgomhQNEjL+CjpivkPAKsEOhmrYT9GgCPt7eoOOBM6nPSDgHcnma3EHBImGohln5VSAYULHCAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T19:28:42.975128Z","bundle_sha256":"1ada127be369d0b0e3d470aa8aba00a757407b6d10114c235e814308a71a89c9"}}