{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:ENQE3CKPVEPVSY5TIXKUSWKLHN","short_pith_number":"pith:ENQE3CKP","schema_version":"1.0","canonical_sha256":"23604d894fa91f5963b345d549594b3b521dd024d5e8b4e4c93ff04f0e01cd59","source":{"kind":"arxiv","id":"1105.0435","version":2},"attestation_state":"computed","paper":{"title":"A merger mystery: no extended radio emission in the merging cluster Abell 2146","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A.C. Edge, A.C. Fabian, B.R. McNamara, C.P. O'Dea, H.R. Russell, J.S. Sanders, M. Donahue, R.E.A. Canning, R.J. van Weeren, S.A. Baum","submitted_at":"2011-05-02T20:35:07Z","abstract_excerpt":"We present a new 400ks Chandra X-ray observation and a GMRT radio observation at 325MHz of the merging galaxy cluster Abell 2146. The Chandra observation reveals detailed structure associated with the major merger event including the Mach M=2.1+/-0.2 bow shock located ahead of the dense subcluster core and the first known example of an upstream shock (M=1.6+/-0.1). Surprisingly, the deep GMRT observation at 325MHz does not detect any extended radio emission associated with either shock front. All other merging galaxy clusters with X-ray detected shock fronts, including the Bullet cluster, Abel"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1105.0435","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-02T20:35:07Z","cross_cats_sorted":[],"title_canon_sha256":"04d481fd635871e71991beadd983a7e7d1f7fe9ba8e699f64c04b029f07164d5","abstract_canon_sha256":"d563221ebfd4944bf89f64c90b82a1f2a11ded9f0ffa235a0470568d4babe6da"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:10.028993Z","signature_b64":"oxn48P6Fc/emvw0tvIHB56bEcjdE6KNaGkFcPh5hxWj34lYhvUCTJj/ejf654u9lOMsvaKOug1A5GqNWGLsRDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23604d894fa91f5963b345d549594b3b521dd024d5e8b4e4c93ff04f0e01cd59","last_reissued_at":"2026-05-18T02:02:10.028345Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:10.028345Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A merger mystery: no extended radio emission in the merging cluster Abell 2146","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A.C. Edge, A.C. Fabian, B.R. McNamara, C.P. O'Dea, H.R. Russell, J.S. Sanders, M. Donahue, R.E.A. Canning, R.J. van Weeren, S.A. Baum","submitted_at":"2011-05-02T20:35:07Z","abstract_excerpt":"We present a new 400ks Chandra X-ray observation and a GMRT radio observation at 325MHz of the merging galaxy cluster Abell 2146. The Chandra observation reveals detailed structure associated with the major merger event including the Mach M=2.1+/-0.2 bow shock located ahead of the dense subcluster core and the first known example of an upstream shock (M=1.6+/-0.1). Surprisingly, the deep GMRT observation at 325MHz does not detect any extended radio emission associated with either shock front. All other merging galaxy clusters with X-ray detected shock fronts, including the Bullet cluster, Abel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.0435","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1105.0435","created_at":"2026-05-18T02:02:10.028438+00:00"},{"alias_kind":"arxiv_version","alias_value":"1105.0435v2","created_at":"2026-05-18T02:02:10.028438+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.0435","created_at":"2026-05-18T02:02:10.028438+00:00"},{"alias_kind":"pith_short_12","alias_value":"ENQE3CKPVEPV","created_at":"2026-05-18T12:26:28.662955+00:00"},{"alias_kind":"pith_short_16","alias_value":"ENQE3CKPVEPVSY5T","created_at":"2026-05-18T12:26:28.662955+00:00"},{"alias_kind":"pith_short_8","alias_value":"ENQE3CKP","created_at":"2026-05-18T12:26:28.662955+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ENQE3CKPVEPVSY5TIXKUSWKLHN","json":"https://pith.science/pith/ENQE3CKPVEPVSY5TIXKUSWKLHN.json","graph_json":"https://pith.science/api/pith-number/ENQE3CKPVEPVSY5TIXKUSWKLHN/graph.json","events_json":"https://pith.science/api/pith-number/ENQE3CKPVEPVSY5TIXKUSWKLHN/events.json","paper":"https://pith.science/paper/ENQE3CKP"},"agent_actions":{"view_html":"https://pith.science/pith/ENQE3CKPVEPVSY5TIXKUSWKLHN","download_json":"https://pith.science/pith/ENQE3CKPVEPVSY5TIXKUSWKLHN.json","view_paper":"https://pith.science/paper/ENQE3CKP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1105.0435&json=true","fetch_graph":"https://pith.science/api/pith-number/ENQE3CKPVEPVSY5TIXKUSWKLHN/graph.json","fetch_events":"https://pith.science/api/pith-number/ENQE3CKPVEPVSY5TIXKUSWKLHN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ENQE3CKPVEPVSY5TIXKUSWKLHN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ENQE3CKPVEPVSY5TIXKUSWKLHN/action/storage_attestation","attest_author":"https://pith.science/pith/ENQE3CKPVEPVSY5TIXKUSWKLHN/action/author_attestation","sign_citation":"https://pith.science/pith/ENQE3CKPVEPVSY5TIXKUSWKLHN/action/citation_signature","submit_replication":"https://pith.science/pith/ENQE3CKPVEPVSY5TIXKUSWKLHN/action/replication_record"}},"created_at":"2026-05-18T02:02:10.028438+00:00","updated_at":"2026-05-18T02:02:10.028438+00:00"}