{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:LQH4GWEHVDEBAJ5MJXYQ5JB75T","short_pith_number":"pith:LQH4GWEH","canonical_record":{"source":{"id":"2505.24323","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-05-30T08:06:14Z","cross_cats_sorted":[],"title_canon_sha256":"f77c189e2eba47699e6fc6806a08c7f84be8eae437a7e96f56402c6cbf3ad13c","abstract_canon_sha256":"0335ce7442cfccb9ef89c1b6853e41d379ff85b5f5b6a97db26eb12e1f9673eb"},"schema_version":"1.0"},"canonical_sha256":"5c0fc35887a8c81027ac4df10ea43fecf31cac8a014360bd8aac3960be1f79ca","source":{"kind":"arxiv","id":"2505.24323","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.24323","created_at":"2026-07-05T11:12:46Z"},{"alias_kind":"arxiv_version","alias_value":"2505.24323v1","created_at":"2026-07-05T11:12:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.24323","created_at":"2026-07-05T11:12:46Z"},{"alias_kind":"pith_short_12","alias_value":"LQH4GWEHVDEB","created_at":"2026-07-05T11:12:46Z"},{"alias_kind":"pith_short_16","alias_value":"LQH4GWEHVDEBAJ5M","created_at":"2026-07-05T11:12:46Z"},{"alias_kind":"pith_short_8","alias_value":"LQH4GWEH","created_at":"2026-07-05T11:12:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:LQH4GWEHVDEBAJ5MJXYQ5JB75T","target":"record","payload":{"canonical_record":{"source":{"id":"2505.24323","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-05-30T08:06:14Z","cross_cats_sorted":[],"title_canon_sha256":"f77c189e2eba47699e6fc6806a08c7f84be8eae437a7e96f56402c6cbf3ad13c","abstract_canon_sha256":"0335ce7442cfccb9ef89c1b6853e41d379ff85b5f5b6a97db26eb12e1f9673eb"},"schema_version":"1.0"},"canonical_sha256":"5c0fc35887a8c81027ac4df10ea43fecf31cac8a014360bd8aac3960be1f79ca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:12:46.838060Z","signature_b64":"rH16RCdIRcPV6N8RVYEwRWiTHdaVCW+IuDbkLg/skLCE7LGealoob57ectAj0JWPsyGymKmg8WDuQEDa6vMsAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5c0fc35887a8c81027ac4df10ea43fecf31cac8a014360bd8aac3960be1f79ca","last_reissued_at":"2026-07-05T11:12:46.837510Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:12:46.837510Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.24323","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":"2026-07-05T11:12:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9ogk9IFFkB72DLxn3VNJgWSOeom6YUiM0Qirgz2p5CEnffLqgbrAN/rHXZUcdJpvip7AI6e3i5J7DuQzpIzdDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T07:59:49.495314Z"},"content_sha256":"a298adf854fdd5d164c8626d37f3b90e3c635dc9b0bd3c8a0b54d7de36807e14","schema_version":"1.0","event_id":"sha256:a298adf854fdd5d164c8626d37f3b90e3c635dc9b0bd3c8a0b54d7de36807e14"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:LQH4GWEHVDEBAJ5MJXYQ5JB75T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A new shock in the pre-merging cluster pair 1E2215-2216","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Aurora Simionescu, Chunyang Jiang, Liyi Gu, Rui Huang, Wei Cui, Yanling Chen","submitted_at":"2025-05-30T08:06:14Z","abstract_excerpt":"The galaxy cluster pair 1E2216.0-0401 and 1E2215.7-0404 represents a major cluster merger in its early stages, a phase that has been scarcely explored in previous studies. Within this system, both axial and equatorial merger shocks have been identified. Recent XMM-Newton observations of the southern region of the cluster pair have increased the total exposure time to approximately 300 ks, enhancing the sensitivity to detect faint shock features in the cluster outskirts. Through a combined analysis of XMM-Newton and Chandra data, including both imaging and spectral techniques, a new shock front"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.24323","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/2505.24323/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":"2026-07-05T11:12:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cs2jB9sUXpBxQzeo5p6efda9AhI0W7U5+fPa+OoHKgw5otsXiFxwVMfmJtbhA0Zt41mHF0cpTk3PH3ERWRqaBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T07:59:49.495829Z"},"content_sha256":"689735ea263d260dfd9150342a462404940165959f8d5bd5c2df3c5fc6f5ab5d","schema_version":"1.0","event_id":"sha256:689735ea263d260dfd9150342a462404940165959f8d5bd5c2df3c5fc6f5ab5d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LQH4GWEHVDEBAJ5MJXYQ5JB75T/bundle.json","state_url":"https://pith.science/pith/LQH4GWEHVDEBAJ5MJXYQ5JB75T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LQH4GWEHVDEBAJ5MJXYQ5JB75T/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":"2026-08-09T07:59:49Z","links":{"resolver":"https://pith.science/pith/LQH4GWEHVDEBAJ5MJXYQ5JB75T","bundle":"https://pith.science/pith/LQH4GWEHVDEBAJ5MJXYQ5JB75T/bundle.json","state":"https://pith.science/pith/LQH4GWEHVDEBAJ5MJXYQ5JB75T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LQH4GWEHVDEBAJ5MJXYQ5JB75T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:LQH4GWEHVDEBAJ5MJXYQ5JB75T","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":"0335ce7442cfccb9ef89c1b6853e41d379ff85b5f5b6a97db26eb12e1f9673eb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-05-30T08:06:14Z","title_canon_sha256":"f77c189e2eba47699e6fc6806a08c7f84be8eae437a7e96f56402c6cbf3ad13c"},"schema_version":"1.0","source":{"id":"2505.24323","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.24323","created_at":"2026-07-05T11:12:46Z"},{"alias_kind":"arxiv_version","alias_value":"2505.24323v1","created_at":"2026-07-05T11:12:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.24323","created_at":"2026-07-05T11:12:46Z"},{"alias_kind":"pith_short_12","alias_value":"LQH4GWEHVDEB","created_at":"2026-07-05T11:12:46Z"},{"alias_kind":"pith_short_16","alias_value":"LQH4GWEHVDEBAJ5M","created_at":"2026-07-05T11:12:46Z"},{"alias_kind":"pith_short_8","alias_value":"LQH4GWEH","created_at":"2026-07-05T11:12:46Z"}],"graph_snapshots":[{"event_id":"sha256:689735ea263d260dfd9150342a462404940165959f8d5bd5c2df3c5fc6f5ab5d","target":"graph","created_at":"2026-07-05T11:12:46Z","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/2505.24323/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The galaxy cluster pair 1E2216.0-0401 and 1E2215.7-0404 represents a major cluster merger in its early stages, a phase that has been scarcely explored in previous studies. Within this system, both axial and equatorial merger shocks have been identified. Recent XMM-Newton observations of the southern region of the cluster pair have increased the total exposure time to approximately 300 ks, enhancing the sensitivity to detect faint shock features in the cluster outskirts. Through a combined analysis of XMM-Newton and Chandra data, including both imaging and spectral techniques, a new shock front","authors_text":"Aurora Simionescu, Chunyang Jiang, Liyi Gu, Rui Huang, Wei Cui, Yanling Chen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-05-30T08:06:14Z","title":"A new shock in the pre-merging cluster pair 1E2215-2216"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.24323","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:a298adf854fdd5d164c8626d37f3b90e3c635dc9b0bd3c8a0b54d7de36807e14","target":"record","created_at":"2026-07-05T11:12:46Z","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":"0335ce7442cfccb9ef89c1b6853e41d379ff85b5f5b6a97db26eb12e1f9673eb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-05-30T08:06:14Z","title_canon_sha256":"f77c189e2eba47699e6fc6806a08c7f84be8eae437a7e96f56402c6cbf3ad13c"},"schema_version":"1.0","source":{"id":"2505.24323","kind":"arxiv","version":1}},"canonical_sha256":"5c0fc35887a8c81027ac4df10ea43fecf31cac8a014360bd8aac3960be1f79ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5c0fc35887a8c81027ac4df10ea43fecf31cac8a014360bd8aac3960be1f79ca","first_computed_at":"2026-07-05T11:12:46.837510Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:12:46.837510Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rH16RCdIRcPV6N8RVYEwRWiTHdaVCW+IuDbkLg/skLCE7LGealoob57ectAj0JWPsyGymKmg8WDuQEDa6vMsAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:12:46.838060Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.24323","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a298adf854fdd5d164c8626d37f3b90e3c635dc9b0bd3c8a0b54d7de36807e14","sha256:689735ea263d260dfd9150342a462404940165959f8d5bd5c2df3c5fc6f5ab5d"],"state_sha256":"bfa99048aebbd8581581ec4fb763755e6b603a978642a820aa4a5136303e5e33"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N/mFd9Gjh203SPOrxYHXbzdW5biT8PJASICV9Ts1wnfkIz2UkhG0Sc5fYaPQv1FLrXFXhiw734Z/EBF7eXDeAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T07:59:49.501814Z","bundle_sha256":"5c905158f9f4971bed8fc065ad074880786b63facd82285ee39d688bff87f7d3"}}