{"paper":{"title":"Methodological Frontiers in 21-cm Intensity Mapping: the Treatment of Systematics and Foreground Contamination","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Abhik Ghosh, Athanasia Gkogkou, Bianca De Caro, Carmelita Carbone, Devin Crichton, Geoff Murphy, Isabella P. Carucci, Jean-Luc Starck, Jingying Wang, Jose Fonseca, Jos\\'e Luis Bernal, Keith Grainge, Khandakar Md Asif Elahi, Laura Wolz, Mario G. Santos, Marta Spinelli, Matilde Barberi-Squarotti, Melis O. Irfan, Philip Bull, Samir Choudhuri, Simon Prunet, Siyambonga Matshawule, Somnath Bharadwaj, Stefano Camera, Steven Cunnington, Suman Chatterjee, Tianyue Chen, Victor Bonjean, Wenkai Hu, Yichao Li, Zhaoting Chen, Zheng Zhang","submitted_at":"2026-06-25T16:31:55Z","abstract_excerpt":"The distribution of neutral hydrogen (HI) in the post-reionization universe traces the cosmic large-scale structure and therefore serves as a powerful cosmological probe. An efficient way to measure its distribution over wide sky areas and redshift ranges is through single-dish intensity mapping, which exploits the autocorrelation signal of each dish in a telescope array while scanning the same sky patch. Thanks to its broad frequency coverage and technical capabilities, SKA-Mid will enable measurements of the integrated 21 cm emission from HI up to redshift $z\\sim3$, making single-dish intens"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.27244","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/2606.27244/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"}