{"paper":{"title":"A cross-calibration approach for polarisation-sensitive detectors in CMB experiments: application to LiteBIRD's polarisation angle calibration","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"A. Anand, A. Basyrov, A. Besnard, A. Carones, A. Coppolecchia, A. Gruppuso, A. I. Lonappan, A. J. Banday, A. Novelli, A. Paiella, A. Ritacco, B. Van Tent, C. Franceschet, C. Gimeno-Amo, C. Leloup, D. Blinov, D. Paoletti, D. Scott, E. Allys, E. Calabrese, E. de la Hoz, E. Hivon, E. J. Wollack, E. Mart\\'inez-Gonz\\'alez, F. Cacciotti, F. Carralot, F. Columbro, F. Cuttaia, F. Finelli, F. J. Casas, F. Levrier, F. Noviello, F. Piacentini, G. Galloni, G. Luzzi, G. Morgante, G. Pascual-Cisneros, G. Patanchon, G. Piccirilli, G. Polenta, G. Signorelli, G. Weymann-Despres, H. Ishino, H. K. Eriksen, I. K. Wehus, J. Aumont, J. Chandran, J. Macias-Perez, J. Sanghavi, K. Cheung, K. Kohri, L. Clermont, L. Lamagna, L. Mousset, L. Pagano, L. Porcelli, L. Salvati, L. Terenzi, L. T. Hergt, L. Vacher, M. Bortolami, M. Citran, M. De Lucia, M. Galloway, M. Gerbino, M. Gervasi, M. Hazumi, M. Lattanzi, M. L\\'opez-Caniego, M. Migliaccio, M. Monelli, M. Pinchera, M. Remazeilles, M. Ruiz-Granda, M. Shiraishi, M. Tomasi, M. Tristram, M. Zannoni (for the LiteBIRD Collaboration), N. Bartolo, P. Campeti, P. De Bernardis, P. Diego-Palazuelos, P. Natoli, P. Vielva, R. B. Barreiro, R. M. Sullivan, R. Nagata, R. T. G\\'enova-Santos, S. Basak, S. Giardiello, S. Henrot-Versill\\'e, S. Masi, S. Matarrese, S. Micheli, S. Vinzl, T. Brinckmann, T. de Haan, T. Ghigna, T. Matsumura, T. Namikawa, U. Fuskeland, V. Maranchery, V. Sauvage, Y. Sakurai, Y. Takase","submitted_at":"2026-06-22T11:53:30Z","abstract_excerpt":"One of the current challenges in observational cosmology is obtaining high-precision polarisation maps of the CMB to measure primordial $B$-modes and constrain the tensor-to-scalar ratio ($r$). The weakness of this signal compared to foregrounds and $E$-to-$B$ leakage makes this task particularly challenging, requiring large detector arrays operating at multiple frequencies and extremely precise calibration. We present a cross-calibration algorithm to determine relative calibration of detectors within the same frequency band of a CMB experiment. The method iteratively compares single-detector "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.23207","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/2606.23207/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"}