{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:VDM7BTXSVC77MSGJVM76TFPCHU","short_pith_number":"pith:VDM7BTXS","canonical_record":{"source":{"id":"2006.13535","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-06-24T07:42:51Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"c63b58c77eaaf5b1b4088e17f1e4e04b99de7e7f4608713b116af36a382c2a9c","abstract_canon_sha256":"1b82067f8d7f52bf18629d2618dc10e69be71c0a880237d92de069ff68d352fb"},"schema_version":"1.0"},"canonical_sha256":"a8d9f0cef2a8bff648c9ab3fe995e23d0740cc019891f888f02d3d0f51e47910","source":{"kind":"arxiv","id":"2006.13535","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.13535","created_at":"2026-07-05T01:52:20Z"},{"alias_kind":"arxiv_version","alias_value":"2006.13535v2","created_at":"2026-07-05T01:52:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.13535","created_at":"2026-07-05T01:52:20Z"},{"alias_kind":"pith_short_12","alias_value":"VDM7BTXSVC77","created_at":"2026-07-05T01:52:20Z"},{"alias_kind":"pith_short_16","alias_value":"VDM7BTXSVC77MSGJ","created_at":"2026-07-05T01:52:20Z"},{"alias_kind":"pith_short_8","alias_value":"VDM7BTXS","created_at":"2026-07-05T01:52:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:VDM7BTXSVC77MSGJVM76TFPCHU","target":"record","payload":{"canonical_record":{"source":{"id":"2006.13535","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-06-24T07:42:51Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"c63b58c77eaaf5b1b4088e17f1e4e04b99de7e7f4608713b116af36a382c2a9c","abstract_canon_sha256":"1b82067f8d7f52bf18629d2618dc10e69be71c0a880237d92de069ff68d352fb"},"schema_version":"1.0"},"canonical_sha256":"a8d9f0cef2a8bff648c9ab3fe995e23d0740cc019891f888f02d3d0f51e47910","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:52:20.992959Z","signature_b64":"+4nhjzlahibzgTyTQc2r8OfnEB+V7j32nI5raSZHisecxijB3zReyil6gEOkOYmmQ6Wx4U4Su9t0NQ6qPrD3Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a8d9f0cef2a8bff648c9ab3fe995e23d0740cc019891f888f02d3d0f51e47910","last_reissued_at":"2026-07-05T01:52:20.992407Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:52:20.992407Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.13535","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":"2026-07-05T01:52:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xn1QNyrDw+UR7Jv+31dONo4LAf3aRhUDPCVzB+REeXoAWdrK1QHguAfV9pmYIA9Gn6xTN+DBVIVblyA7HVHLCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-12T01:41:05.324150Z"},"content_sha256":"a5ace3bc8acbfb690fba9e0f6de560d24b696a564fe80735e5781ae980959c2b","schema_version":"1.0","event_id":"sha256:a5ace3bc8acbfb690fba9e0f6de560d24b696a564fe80735e5781ae980959c2b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:VDM7BTXSVC77MSGJVM76TFPCHU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Toward Solving the Puzzle: Dissecting the Complex Merger A521 with Multi-wavelength Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Jae-Woo Kim, Kyle Finner, Mijin Yoon, M. James Jee, Rory Smith, Wonki Lee","submitted_at":"2020-06-24T07:42:51Z","abstract_excerpt":"A521 has been a subject of extensive panchromatic studies from X-ray to radio. The cluster possesses a number of remarkable features including a bright radio relic with a steep spectrum, more than three distinct galaxy groups forming a filament, and two disturbed X-ray peaks at odds with the distant position and tilted orientation of the radio relic. These several lines of evidence indicate a complex merger. In this paper, we present a multi-wavelength study of A521 based on Subaru optical, Hubble Space Telescope infrared, Chandra X-ray, GMRT radio, and MMT optical spectroscopic observations. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.13535","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/2006.13535/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":"2026-07-05T01:52:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iQ+zdh1o964K0h98HLB/VenCIoTuIvhwzfkfEWhd6Yi0IsPFNIdXy23tG4QMZMgP1dMkc2a+Zwohi56GRJCfBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-12T01:41:05.324538Z"},"content_sha256":"7f18ab4beb4d28533bdc6ded61c6e0c3d030ad9ee708d6efc8e9765dabf2e894","schema_version":"1.0","event_id":"sha256:7f18ab4beb4d28533bdc6ded61c6e0c3d030ad9ee708d6efc8e9765dabf2e894"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VDM7BTXSVC77MSGJVM76TFPCHU/bundle.json","state_url":"https://pith.science/pith/VDM7BTXSVC77MSGJVM76TFPCHU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VDM7BTXSVC77MSGJVM76TFPCHU/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":"2026-07-12T01:41:05Z","links":{"resolver":"https://pith.science/pith/VDM7BTXSVC77MSGJVM76TFPCHU","bundle":"https://pith.science/pith/VDM7BTXSVC77MSGJVM76TFPCHU/bundle.json","state":"https://pith.science/pith/VDM7BTXSVC77MSGJVM76TFPCHU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VDM7BTXSVC77MSGJVM76TFPCHU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:VDM7BTXSVC77MSGJVM76TFPCHU","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":"1b82067f8d7f52bf18629d2618dc10e69be71c0a880237d92de069ff68d352fb","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-06-24T07:42:51Z","title_canon_sha256":"c63b58c77eaaf5b1b4088e17f1e4e04b99de7e7f4608713b116af36a382c2a9c"},"schema_version":"1.0","source":{"id":"2006.13535","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.13535","created_at":"2026-07-05T01:52:20Z"},{"alias_kind":"arxiv_version","alias_value":"2006.13535v2","created_at":"2026-07-05T01:52:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.13535","created_at":"2026-07-05T01:52:20Z"},{"alias_kind":"pith_short_12","alias_value":"VDM7BTXSVC77","created_at":"2026-07-05T01:52:20Z"},{"alias_kind":"pith_short_16","alias_value":"VDM7BTXSVC77MSGJ","created_at":"2026-07-05T01:52:20Z"},{"alias_kind":"pith_short_8","alias_value":"VDM7BTXS","created_at":"2026-07-05T01:52:20Z"}],"graph_snapshots":[{"event_id":"sha256:7f18ab4beb4d28533bdc6ded61c6e0c3d030ad9ee708d6efc8e9765dabf2e894","target":"graph","created_at":"2026-07-05T01:52:20Z","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/2006.13535/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A521 has been a subject of extensive panchromatic studies from X-ray to radio. The cluster possesses a number of remarkable features including a bright radio relic with a steep spectrum, more than three distinct galaxy groups forming a filament, and two disturbed X-ray peaks at odds with the distant position and tilted orientation of the radio relic. These several lines of evidence indicate a complex merger. In this paper, we present a multi-wavelength study of A521 based on Subaru optical, Hubble Space Telescope infrared, Chandra X-ray, GMRT radio, and MMT optical spectroscopic observations. ","authors_text":"Jae-Woo Kim, Kyle Finner, Mijin Yoon, M. James Jee, Rory Smith, Wonki Lee","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-06-24T07:42:51Z","title":"Toward Solving the Puzzle: Dissecting the Complex Merger A521 with Multi-wavelength Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.13535","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:a5ace3bc8acbfb690fba9e0f6de560d24b696a564fe80735e5781ae980959c2b","target":"record","created_at":"2026-07-05T01:52:20Z","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":"1b82067f8d7f52bf18629d2618dc10e69be71c0a880237d92de069ff68d352fb","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-06-24T07:42:51Z","title_canon_sha256":"c63b58c77eaaf5b1b4088e17f1e4e04b99de7e7f4608713b116af36a382c2a9c"},"schema_version":"1.0","source":{"id":"2006.13535","kind":"arxiv","version":2}},"canonical_sha256":"a8d9f0cef2a8bff648c9ab3fe995e23d0740cc019891f888f02d3d0f51e47910","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a8d9f0cef2a8bff648c9ab3fe995e23d0740cc019891f888f02d3d0f51e47910","first_computed_at":"2026-07-05T01:52:20.992407Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:52:20.992407Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+4nhjzlahibzgTyTQc2r8OfnEB+V7j32nI5raSZHisecxijB3zReyil6gEOkOYmmQ6Wx4U4Su9t0NQ6qPrD3Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:52:20.992959Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.13535","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a5ace3bc8acbfb690fba9e0f6de560d24b696a564fe80735e5781ae980959c2b","sha256:7f18ab4beb4d28533bdc6ded61c6e0c3d030ad9ee708d6efc8e9765dabf2e894"],"state_sha256":"8a83a42d16c2f5012fcc468936f646f56a3d9c08686bf4aa9652cfafbe4cb82e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hfmq8T/CYZ0qfXIuSlNOI88l+l3w69VluGzq6zKscM3o0pnUGbvxqCRSgPXopmNkhK5QOfWFz6lAg7KWkgAcAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-12T01:41:05.326928Z","bundle_sha256":"6f271a4e86736d007106e88c8eeec7b3059c13726a23cbc6875df00d87c5956e"}}