{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:IN4FDNN7XNCUXGN2FUWMQYJKTR","short_pith_number":"pith:IN4FDNN7","schema_version":"1.0","canonical_sha256":"437851b5bfbb454b99ba2d2cc8612a9c6d79299bc40792c10352283100a1003a","source":{"kind":"arxiv","id":"2103.10110","version":1},"attestation_state":"computed","paper":{"title":"The LOFAR and JVLA view of the distant steep spectrum radio halo in MACS J1149.5+2223","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Bonafede, A. Botteon, A. Ignesti, D. Dallacasa, F. Gastaldello, G. Brunetti, G. Di Gennaro, K. Rajpurohit, L. Bruno, M. Br\\\"uggen, R. Cassano, R. J. van Weeren, T. Shimwell, V. Cuciti","submitted_at":"2021-03-18T09:37:05Z","abstract_excerpt":"Radio halos and relics are Mpc-scale diffuse radio sources in galaxy clusters, with a steep spectral index $\\alpha>1$ ($S\\propto \\nu^{-\\alpha}$). It has been proposed that they arise from particle acceleration induced by turbulence and weak shocks, injected in the intracluster medium (ICM) during mergers. MACS J1149.5+2223 (MACS J1149) is a high redshift ($z=0.544$) galaxy cluster possibly hosting a radio halo and a relic. We analysed LOFAR, GMRT, and JVLA radio data at 144, 323, 1500 MHz, and Chandra X-ray data to characterise the thermal and non-thermal properties of the cluster. We obtained"},"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":"2103.10110","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-03-18T09:37:05Z","cross_cats_sorted":[],"title_canon_sha256":"5fed672c374f4617e762cd849a79e2c654dc9f6a50f79a8db1713981053c0d4c","abstract_canon_sha256":"602456ec1df181fae32edfbf2c36158c511cc1836edf6680d60bac05344396a5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:47:33.874955Z","signature_b64":"rEqL+L26puT2+7UJsrfCZfqS6i8+7ni1qrHxBzUqgc0vy5g4D/Q+CqmDjSZ349fMQQ/lmMav7iO+JFoFGkv9Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"437851b5bfbb454b99ba2d2cc8612a9c6d79299bc40792c10352283100a1003a","last_reissued_at":"2026-07-05T02:47:33.874456Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:47:33.874456Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The LOFAR and JVLA view of the distant steep spectrum radio halo in MACS J1149.5+2223","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Bonafede, A. Botteon, A. Ignesti, D. Dallacasa, F. Gastaldello, G. Brunetti, G. Di Gennaro, K. Rajpurohit, L. Bruno, M. Br\\\"uggen, R. Cassano, R. J. van Weeren, T. Shimwell, V. Cuciti","submitted_at":"2021-03-18T09:37:05Z","abstract_excerpt":"Radio halos and relics are Mpc-scale diffuse radio sources in galaxy clusters, with a steep spectral index $\\alpha>1$ ($S\\propto \\nu^{-\\alpha}$). It has been proposed that they arise from particle acceleration induced by turbulence and weak shocks, injected in the intracluster medium (ICM) during mergers. MACS J1149.5+2223 (MACS J1149) is a high redshift ($z=0.544$) galaxy cluster possibly hosting a radio halo and a relic. We analysed LOFAR, GMRT, and JVLA radio data at 144, 323, 1500 MHz, and Chandra X-ray data to characterise the thermal and non-thermal properties of the cluster. We obtained"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.10110","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/2103.10110/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2103.10110","created_at":"2026-07-05T02:47:33.874515+00:00"},{"alias_kind":"arxiv_version","alias_value":"2103.10110v1","created_at":"2026-07-05T02:47:33.874515+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.10110","created_at":"2026-07-05T02:47:33.874515+00:00"},{"alias_kind":"pith_short_12","alias_value":"IN4FDNN7XNCU","created_at":"2026-07-05T02:47:33.874515+00:00"},{"alias_kind":"pith_short_16","alias_value":"IN4FDNN7XNCUXGN2","created_at":"2026-07-05T02:47:33.874515+00:00"},{"alias_kind":"pith_short_8","alias_value":"IN4FDNN7","created_at":"2026-07-05T02:47:33.874515+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.07750","citing_title":"Multi-Wavelength Signatures of a Giant Cometary Radio Halo in MACSJ0417-1154","ref_index":24,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/IN4FDNN7XNCUXGN2FUWMQYJKTR","json":"https://pith.science/pith/IN4FDNN7XNCUXGN2FUWMQYJKTR.json","graph_json":"https://pith.science/api/pith-number/IN4FDNN7XNCUXGN2FUWMQYJKTR/graph.json","events_json":"https://pith.science/api/pith-number/IN4FDNN7XNCUXGN2FUWMQYJKTR/events.json","paper":"https://pith.science/paper/IN4FDNN7"},"agent_actions":{"view_html":"https://pith.science/pith/IN4FDNN7XNCUXGN2FUWMQYJKTR","download_json":"https://pith.science/pith/IN4FDNN7XNCUXGN2FUWMQYJKTR.json","view_paper":"https://pith.science/paper/IN4FDNN7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2103.10110&json=true","fetch_graph":"https://pith.science/api/pith-number/IN4FDNN7XNCUXGN2FUWMQYJKTR/graph.json","fetch_events":"https://pith.science/api/pith-number/IN4FDNN7XNCUXGN2FUWMQYJKTR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IN4FDNN7XNCUXGN2FUWMQYJKTR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IN4FDNN7XNCUXGN2FUWMQYJKTR/action/storage_attestation","attest_author":"https://pith.science/pith/IN4FDNN7XNCUXGN2FUWMQYJKTR/action/author_attestation","sign_citation":"https://pith.science/pith/IN4FDNN7XNCUXGN2FUWMQYJKTR/action/citation_signature","submit_replication":"https://pith.science/pith/IN4FDNN7XNCUXGN2FUWMQYJKTR/action/replication_record"}},"created_at":"2026-07-05T02:47:33.874515+00:00","updated_at":"2026-07-05T02:47:33.874515+00:00"}