We present an original data analysis and a physical model that provide new insights into the origin of and relationship between two observables of the dusty polarized Galaxy at intermediate and high latitudes: (i) the misalignment between H I filamentary structures and magnetic fields and (ii) the positive T B correlation measured in Planck data suggesting parity violation in the interstellar medium (ISM). We confirm an observational link between the two effects and find that both are predominantly produced at large angular scales (≥10°, multipoles \u2113 ≤ 20), with a significantly stronger signal in the northern hemisphere. We propose a model in which filaments and magnetic fields appear misaligned in projection because they are sourced by cold and warm gas phases distributed in different proportions in the solar neighborhood, from the wall of the Local Bubble to larger distances. These projection effects at large angular scales can produce coherent signatures that propagate to smaller scales in power spectra without invoking local, small-scale filament misalignment. Within this frame, H I filaments remain statistically aligned with the magnetic field in 3D, although with a projected scatter of tens of degrees that requires further investigation. The multiphase, geometrical model presented in this work is supported by Planck polarization data at 30 GHz, where synchrotron radiation dominates, and at 217 and 353 GHz, where dust emission dominates. Our analysis also incorporates starlight polarization measurements. The model introduced here suggests a new interpretation of two unexplained observables and emphasizes the role of the large-scale magnetized ISM in shaping polarized Galactic emission, which has important implications for both Galactic astrophysics and cosmological foreground characterization.
", "doi": "10.1051/0004-6361/202558550", "issn": "0004-6361", "publisher": "EDP Sciences", "publication": "Astronomy & Astrophysics", "publication_date": "2026-07", "volume": "711", "pages": "A200" }, { "id": "authors:wzhkv-x6y15", "collection": "authors", "collection_id": "wzhkv-x6y15", "cite_using_url": "https://authors.library.caltech.edu/records/wzhkv-x6y15", "type": "article", "title": "Measurement of the CMB temperature power spectrum and constraints on cosmology from the SPT-3G 2018 TT, TE, and EE dataset", "author": [ { "family_name": "Balkenhol", "given_name": "L.", "orcid": "0000-0001-6899-1873", "clpid": "Balkenhol-Lennart" }, { "family_name": "Dutcher", "given_name": "D.", "orcid": "0000-0002-9962-2058" }, { "family_name": "Spurio Mancini", "given_name": "A.", "orcid": "0000-0001-5698-0990" }, { "family_name": "Doussot", "given_name": "A.", "orcid": "0000-0002-4586-7586" }, { "family_name": "Benabed", "given_name": "K." }, { "family_name": "Galli", "given_name": "S." }, { "family_name": "Ade", "given_name": "P.\u2009A.\u2009R.", "orcid": "0000-0002-5127-0401" }, { "family_name": "Anderson", "given_name": "A.\u2009J.", "orcid": "0000-0002-4435-4623" }, { "family_name": "Ansarinejad", "given_name": "B.", "orcid": "0000-0002-6443-3396" }, { "family_name": "Archipley", "given_name": "M.", "orcid": "0000-0002-0517-9842" }, { "family_name": "Bender", "given_name": "A.\u2009N.", "orcid": "0000-0001-5868-0748" }, { "family_name": "Benson", "given_name": "B.\u2009A.", "orcid": "0000-0002-5108-6823" }, { "family_name": "Bianchini", "given_name": "F.", "orcid": "0000-0003-4847-3483" }, { "family_name": "Bleem", "given_name": "L.\u2009E.", "orcid": "0000-0001-7665-5079" }, { "family_name": "Bouchet", "given_name": "F.\u2009R.", "orcid": "0000-0002-8051-2924" }, { "family_name": "Bryant", "given_name": "L." }, { "family_name": "Camphuis", "given_name": "E.", "orcid": "0000-0003-3483-8461" }, { "family_name": "Carlstrom", "given_name": "J.\u2009E.", "orcid": "0000-0002-2044-7665" }, { "family_name": "Cecil", "given_name": "T.\u2009W.", "orcid": "0000-0002-7019-5056" }, { "family_name": "Chang", "given_name": "C.\u2009L." }, { "family_name": "Chaubal", "given_name": "P." }, { "family_name": "Chichura", "given_name": "P.\u2009M.", "orcid": "0000-0002-5397-9035" }, { "family_name": "Chou", "given_name": "T.-L." }, { "family_name": "Coerver", "given_name": "A.", "orcid": "0000-0002-2707-1672" }, { "family_name": "Crawford", "given_name": "T.\u2009M.", "orcid": "0000-0001-9000-5013" }, { "family_name": "Cukierman", "given_name": "A.", "orcid": "0000-0002-7471-719X", "clpid": "Cukierman-Ari" }, { "family_name": "Daley", "given_name": "C.", "orcid": "0000-0002-3760-2086" }, { "family_name": "de Haan", "given_name": "T." }, { "family_name": "Dibert", "given_name": "K.\u2009R.", "orcid": "0000-0001-7439-8726" }, { "family_name": "Dobbs", "given_name": "M.\u2009A." }, { "family_name": "Everett", "given_name": "W." }, { "family_name": "Feng", "given_name": "C." }, { "family_name": "Ferguson", "given_name": "K.\u2009R.", "orcid": "0000-0002-4928-8813" }, { "family_name": "Foster", "given_name": "A.", "orcid": "0000-0002-7145-1824" }, { "family_name": "Gambrel", "given_name": "A.\u2009E." }, { "family_name": "Gardner", "given_name": "R.\u2009W." }, { "family_name": "Goeckner-Wald", "given_name": "N." }, { "family_name": "Gualtieri", "given_name": "R.", "orcid": "0000-0003-4245-2315" }, { "family_name": "Guidi", "given_name": "F.", "orcid": "0000-0001-7593-3962" }, { "family_name": "Guns", "given_name": "S.", "orcid": "0000-0001-7143-2853" }, { "family_name": "Halverson", "given_name": "N.\u2009W.", "orcid": "0000-0003-2606-9340" }, { "family_name": "Hivon", "given_name": "E.", "orcid": "0000-0003-1880-2733" }, { "family_name": "Holder", "given_name": "G.\u2009P.", "orcid": "0000-0002-0463-6394" }, { "family_name": "Holzapfel", "given_name": "W.\u2009L." }, { "family_name": "Hood", "given_name": "J.\u2009C." }, { "family_name": "Huang", "given_name": "N." }, { "family_name": "Knox", "given_name": "L." }, { "family_name": "Korman", "given_name": "M." }, { "family_name": "Kuo", "given_name": "C.-L." }, { "family_name": "Lee", "given_name": "A.\u2009T." }, { "family_name": "Lowitz", "given_name": "A.\u2009E." }, { "family_name": "Lu", "given_name": "C." }, { "family_name": "Millea", "given_name": "M.", "orcid": "0000-0001-7317-0551" }, { "family_name": "Montgomery", "given_name": "J." }, { "family_name": "Nakato", "given_name": "Y." }, { "family_name": "Natoli", "given_name": "T." }, { "family_name": "Noble", "given_name": "G.\u2009I.", "orcid": "0000-0002-5254-243X" }, { "family_name": "Novosad", "given_name": "V." }, { "family_name": "Omori", "given_name": "Y." }, { "family_name": "Padin", "given_name": "S.", "clpid": "Padin-S" }, { "family_name": "Pan", "given_name": "Z." }, { "family_name": "Paschos", "given_name": "P." }, { "family_name": "Prabhu", "given_name": "K." }, { "family_name": "Quan", "given_name": "W." }, { "family_name": "Rahimi", "given_name": "M." }, { "family_name": "Rahlin", "given_name": "A.", "orcid": "0000-0003-3953-1776" }, { "family_name": "Reichardt", "given_name": "C.\u2009L.", "orcid": "0000-0003-2226-9169" }, { "family_name": "Rouble", "given_name": "M." }, { "family_name": "Ruhl", "given_name": "J.\u2009E." }, { "family_name": "Schiappucci", "given_name": "E.", "orcid": "0000-0003-1053-8245" }, { "family_name": "Smecher", "given_name": "G.", "orcid": "0000-0002-5560-187X" }, { "family_name": "Sobrin", "given_name": "J.\u2009A.", "orcid": "0000-0001-6155-5315" }, { "family_name": "Stark", "given_name": "A.\u2009A." }, { "family_name": "Stephen", "given_name": "J." }, { "family_name": "Suzuki", "given_name": "A." }, { "family_name": "Tandoi", "given_name": "C." }, { "family_name": "Thompson", "given_name": "K.\u2009L." }, { "family_name": "Thorne", "given_name": "B.", "orcid": "0000-0002-0457-0153" }, { "family_name": "Tucker", "given_name": "C.", "orcid": "0000-0002-1851-3918" }, { "family_name": "Umilta", "given_name": "C.", "orcid": "0000-0002-6805-6188" }, { "family_name": "Vieira", "given_name": "J.\u2009D." }, { "family_name": "Wang", "given_name": "G." }, { "family_name": "Whitehorn", "given_name": "N.", "orcid": "0000-0002-3157-0407" }, { "family_name": "Wu", "given_name": "W.\u2009L.\u2009K.", "orcid": "0000-0001-5411-6920" }, { "family_name": "Yefremenko", "given_name": "V." }, { "family_name": "Young", "given_name": "M.\u2009R." }, { "family_name": "Zebrowski", "given_name": "J.\u2009A." }, { "literal": "SPT-3G Collaboration" } ], "abstract": "We present a sample-variance-limited measurement of the temperature power spectrum (TT) of the cosmic microwave background using observations of a \u223c1500\u2009\u2009deg\u00b2 field made by the SPT-3G in 2018. We report multifrequency power spectrum measurements at 95, 150, and 220 GHz covering the angular multipole range 750 \u2264 \u2113 < 3000. We combine this TT measurement with the published polarization power spectrum measurements from the 2018 observing season and update their associated covariance matrix to complete the SPT-3G 2018 TT/TE/EE dataset. This is the first analysis to present cosmological constraints from SPT TT, TE, and EE power spectrum measurements jointly. We blind the cosmological results and subject the dataset to a series of consistency tests at the power spectrum and parameter level. We find excellent agreement between frequencies and spectrum types and our results are robust to the modeling of astrophysical foregrounds. We report results for \u039bCDM and a series of extensions, drawing on the following parameters: the amplitude of the gravitational lensing effect on primary power spectra A_L, the effective number of neutrino species N_(eff), the primordial helium abundance Y_P, and the baryon clumping factor due to primordial magnetic fields b. We find that the SPT-3G 2018 TT/TE/EE data are well fit by \u039bCDM with a probability to exceed of 15%. For \u039bCDM, we constrain the expansion rate today to H\u2080 = 68.3 \u00b1 1.5\u2009\u2009km\u2009s\u207b\u00b9\u2009Mpc\u207b\u00b9 and the combined structure growth parameter to S\u2088 = 0.797 \u00b1 0.042. The SPT-based results are effectively independent of Planck, and the cosmological parameter constraints from either dataset are within <1\u03c3 of each other. The addition of temperature data to the SPT-3G TE/EE power spectra improves constraints by 8\u201327% for each of the \u039bCDM cosmological parameters. When additionally fitting A_L, N_(eff), or N_(eff) + Y_P, the posteriors of these parameters tighten by 5\u201324%. In the case of primordial magnetic fields, complete TT/TE/EE power spectrum measurements are necessary to break the degeneracy between b and n\u209b, the spectral index of primordial density perturbations. We report a 95% confidence upper limit from SPT-3G data of b < 1.0. The cosmological constraints in this work are the tightest from SPT primary power spectrum measurements to date and the analysis forms a new framework for future SPT analyses.
", "doi": "10.1103/physrevd.108.023510", "issn": "2470-0010", "publisher": "American Physical Society", "publication": "Physical Review D", "publication_date": "2023-07-15", "series_number": "2", "volume": "108", "issue": "2", "pages": "023510" }, { "id": "authors:ahkzq-cck76", "collection": "authors", "collection_id": "ahkzq-cck76", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230602-251655000.30", "type": "article", "title": "Plastic Laminate Antireflective Coatings for Millimeter-Wave Optics in BICEP Array", "author": [ { "family_name": "Dierickx", "given_name": "M.", "orcid": "0000-0002-3519-8593", "clpid": "Dierickx-Marion" }, { "family_name": "Ade", "given_name": "P. A. R.", "orcid": "0000-0002-5127-0401", "clpid": "Ade-Peter-A-R" }, { "family_name": "Ahmed", "given_name": "Z.", "clpid": "Ahmed-Z" }, { "family_name": "Amiri", "given_name": "M", "orcid": "0000-0001-6523-9029", "clpid": "Amiri-Mandana" }, { "family_name": "Barkats", "given_name": "D.", "orcid": "0000-0002-8971-1954", "clpid": "Barkats-Denis" }, { "family_name": "Basu Thakur", "given_name": "R.", "orcid": "0000-0002-3351-3078", "clpid": "Basu-Thakur-Ritoban" }, { "family_name": "Bischoff", "given_name": "C. A.", "clpid": "Bischoff-C-A" }, { "family_name": "Beck", "given_name": "D. H.", "orcid": "0000-0003-1196-6620", "clpid": "Beck-Douglas-H" }, { "family_name": "Bock", "given_name": "J. J.", "orcid": "0000-0002-5710-5212", "clpid": "Bock-J-J" }, { "family_name": "Buza", "given_name": "V.", "clpid": "Buza-V" }, { "family_name": "Cheshire", "given_name": "J. R.", "orcid": "0000-0002-1630-7854", "clpid": "Cheshire-James-R" }, { "family_name": "Connors", "given_name": "J.", "orcid": "0000-0002-6094-2943", "clpid": "Connors-Jake" }, { "family_name": "Cornelison", "given_name": "J.", "orcid": "0000-0002-2088-7345", "clpid": "Cornelison-James" }, { "family_name": "Crumrine", "given_name": "M.", "clpid": "Crumrine-Michael" }, { "family_name": "Cukierman", "given_name": "A.", "orcid": "0000-0002-7471-719X", "clpid": "Cukierman-Ari" }, { "family_name": "Denison", "given_name": "E. V.", "clpid": "Denison-E-V" }, { "family_name": "Duband", "given_name": "L.", "clpid": "Duband-Lionel" }, { "family_name": "Eiben", "given_name": "M.", "clpid": "Eiben-M" }, { "family_name": "Fatigoni", "given_name": "S.", "orcid": "0000-0002-3790-7314", "clpid": "Fatigoni-Sofia" }, { "family_name": "Filippini", "given_name": "J. P.", "orcid": "0000-0001-8217-6832", "clpid": "Filippini-Jeffrey-P" }, { "family_name": "Goeckner-Wald", "given_name": "N.", "clpid": "Goeckner-Wald-N" }, { "family_name": "Goldfinger", "given_name": "D. C.", "orcid": "0000-0001-5268-8423", "clpid": "Goldfinger-D-C" }, { "family_name": "Grayson", "given_name": "J. A.", "clpid": "Grayson-J-A" }, { "family_name": "Grimes", "given_name": "P.", "orcid": "0000-0001-9292-6297", "clpid": "Grimes-Paul" }, { "family_name": "Hallinan", "given_name": "G.", "orcid": "0000-0002-7083-4049", "clpid": "Hallinan-G" }, { "family_name": "Halal", "given_name": "G.", "orcid": "0000-0003-2221-3018", "clpid": "Halal-George" }, { "family_name": "Halpern", "given_name": "M.", "orcid": "0000-0002-1760-0868", "clpid": "Halpern-Mark" }, { "family_name": "Hand", "given_name": "E.", "clpid": "Hand-Emma" }, { "family_name": "Harrison", "given_name": "S. C.", "clpid": "Harrison-Stephen-C" }, { "family_name": "Henderson", "given_name": "S. W.", "clpid": "Henderson-S-W" }, { "family_name": "Hildebrandt", "given_name": "S. R.", "orcid": "0000-0003-0220-0009", "clpid": "Hildebrant-Sergi-R" }, { "family_name": "Hilton", "given_name": "G. C.", "orcid": "0000-0003-4247-467X", "clpid": "Hilton-Gene-C" }, { "family_name": "Hubmayr", "given_name": "J.", "orcid": "0000-0002-2781-9302", "clpid": "Hubmayr-Johannes" }, { "family_name": "Hui", "given_name": "H.", "orcid": "0000-0001-5812-1903", "clpid": "Hui-Howard" }, { "family_name": "Irwin", "given_name": "K. D.", "orcid": "0000-0002-2998-9743", "clpid": "Irwin-Kent-D" }, { "family_name": "Kang", "given_name": "J.", "orcid": "0000-0002-3470-2954", "clpid": "Kang-Jae-Hwan" }, { "family_name": "Karkare", "given_name": "K. S.", "orcid": "0000-0002-5215-6993", "clpid": "Karkare-Kirit-S" }, { "family_name": "Kefeli", "given_name": "S.", "clpid": "Kefeli-Sinan" }, { "family_name": "Kovac", "given_name": "J. M.", "orcid": "0009-0003-5432-7180", "clpid": "Kovac-John-M" }, { "family_name": "Kuo", "given_name": "C. L.", "clpid": "Kuo-Chia-Lam" }, { "family_name": "Lau", "given_name": "K. Y.", "clpid": "Lau-Kam-Yin" }, { "family_name": "Leitch", "given_name": "E. M.", "orcid": "0000-0001-8553-9336", "clpid": "Leitch-Erik-M" }, { "family_name": "Lennox", "given_name": "A.", "clpid": "Lennox-A" }, { "family_name": "Megerian", "given_name": "K. G.", "clpid": "Megerian-Krikor-G" }, { "family_name": "Minutolo", "given_name": "L.", "orcid": "0000-0002-4876-112X", "clpid": "Minutolo-Lorenzo" }, { "family_name": "Moncelsi", "given_name": "L.", "orcid": "0000-0002-4242-3015", "clpid": "Moncelsi-Lorenzo" }, { "family_name": "Nakato", "given_name": "Y.", "clpid": "Nakato-Y" }, { "family_name": "Namikawa", "given_name": "T.", "orcid": "0000-0003-3070-9240", "clpid": "Namikawa-Toshiya" }, { "family_name": "Nguyen", "given_name": "H. T.", "clpid": "Nguyen-Hien-Trong" }, { "family_name": "O'Brient", "given_name": "R.", "orcid": "0000-0002-4987-6375", "clpid": "O'Brient-Roger-C" }, { "family_name": "Palladino", "given_name": "S.", "clpid": "Palladino-S" }, { "family_name": "Petroff", "given_name": "M. A.", "orcid": "0000-0002-4436-4215", "clpid": "Petroff-Matthew-A" }, { "family_name": "Precup", "given_name": "N.", "clpid": "Precup-N" }, { "family_name": "Prouv\u00e9", "given_name": "T.", "orcid": "0000-0001-5562-6690", "clpid": "Prouv\u00e9-Thomas" }, { "family_name": "Pryke", "given_name": "C.", "clpid": "Pryke-Clem" }, { "family_name": "Racine", "given_name": "B.", "orcid": "0000-0001-8861-3052", "clpid": "Racine-Benjamin" }, { "family_name": "Reintsema", "given_name": "C. D.", "orcid": "0000-0001-8505-4638", "clpid": "Reintsema-Carl-D" }, { "family_name": "Santalucia", "given_name": "D.", "clpid": "Santalucia-D" }, { "family_name": "Schillaci", "given_name": "A.", "orcid": "0000-0002-0512-1042", "clpid": "Schillaci-Alessandro" }, { "family_name": "Schmitt", "given_name": "B. L.", "clpid": "Schmitt-B-L" }, { "family_name": "Singari", "given_name": "B.", "orcid": "0000-0001-7387-0881", "clpid": "Singari-Baibhav" }, { "family_name": "Soliman", "given_name": "A.", "orcid": "0009-0007-9335-1326", "clpid": "Soliman-Ahmed" }, { "family_name": "St. Germaine", "given_name": "T.", "clpid": "St-Germaine-Tyler" }, { "family_name": "Steinbach", "given_name": "B.", "orcid": "0000-0001-6544-7469", "clpid": "Steinbach-Bryan-A" }, { "family_name": "Sudiwala", "given_name": "R. V.", "orcid": "0000-0003-3240-5304", "clpid": "Sudiwala-Rashmi-V" }, { "family_name": "Thompson", "given_name": "K. L.", "clpid": "Thompson-K-L" }, { "family_name": "Tucker", "given_name": "C.", "orcid": "0000-0002-1851-3918", "clpid": "Tucker-Carole-E" }, { "family_name": "Turner", "given_name": "A. D.", "clpid": "Turner-Anthony-D" }, { "family_name": "Umilta", "given_name": "C.", "orcid": "0000-0002-6805-6188", "clpid": "Umilt\u00e0-Ccaterina" }, { "family_name": "Verg\u00e8s", "given_name": "C.", "orcid": "0000-0002-3942-1609", "clpid": "Verg\u00e8s-Clara" }, { "family_name": "Vieregg", "given_name": "A. G.", "clpid": "Vieregg-Abigail-G" }, { "family_name": "Wandui", "given_name": "A.", "orcid": "0000-0002-8232-7343", "clpid": "Wandui-Albert-K" }, { "family_name": "Weber", "given_name": "A. C.", "clpid": "Weber-Alexis-C" }, { "family_name": "Wiebe", "given_name": "D. V.", "orcid": "0000-0002-6669-3159", "clpid": "Wiebe-Donald-V" }, { "family_name": "Willmert", "given_name": "J.", "orcid": "0000-0002-6452-4693", "clpid": "Willmert-Justin" }, { "family_name": "Wu", "given_name": "W. L. K.", "orcid": "0000-0001-5411-6920", "clpid": "Wu-Wai-Ling-Kimmy" }, { "family_name": "Yang", "given_name": "E.", "clpid": "Yang-E" }, { "family_name": "Yoon", "given_name": "K. W.", "clpid": "Yoon-K-W" }, { "family_name": "Young", "given_name": "E. T.", "clpid": "Young-E-T" }, { "family_name": "Yu", "given_name": "C. J.", "clpid": "Yu-C-J" }, { "family_name": "Zeng", "given_name": "L.", "orcid": "0000-0001-6924-9072", "clpid": "Zeng-Lingzhen" }, { "family_name": "Zhang", "given_name": "C.", "orcid": "0000-0001-8288-5823", "clpid": "Zhang-Cheng" }, { "family_name": "Zhang", "given_name": "S.", "clpid": "Zhang-Silvia" } ], "abstract": "The BICEP/Keck series of experiments target the cosmic microwave background at degree-scale resolution from the South Pole. Over the next few years, the \"Stage-3\" BICEP Array (BA) telescope will improve the program's frequency coverage and sensitivity to primordial B-mode polarization by an order of magnitude. The first receiver in the array, BA1, began observing at 30/40 GHz in early 2020. The next two receivers, BA2 and BA3, are currently being assembled and will map the southern sky at frequencies ranging from 95 to 150 GHz. Common to all BA receivers is a refractive, on-axis, cryogenic optical design that focuses microwave radiation onto a focal plane populated with antenna-coupled bolometers. High-performance antireflective coatings up to 760 mm in aperture are needed for each element in the optical chain, and must withstand repeated thermal cycles down to 4 K. Here, we present the design and fabrication of the 30/40 GHz anti-reflection coatings for the recently deployed BA1 receiver, with indices matched to its various polyethylene, nylon and alumina optical components. We describe an epoxy coating technique designed for alumina optics, which achieves better than 80% transmission at room temperature. For polyethylene optical elements, we present a new heat-compression approach that allows low-density polytetrafluoroethylene AR layers to reach sub-percent reflected power. We describe the planned use of these methods for the next BA cryostats, which may inform technological choices for future small-aperture telescopes of the CMB-S4 experiment.", "doi": "10.1007/s10909-023-02967-1", "issn": "0022-2291", "publisher": "Springer", "publication": "Journal of Low Temperature Physics", "publication_date": "2023-06-05" }, { "id": "authors:md2mf-ndy43", "collection": "authors", "collection_id": "md2mf-ndy43", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230705-476466000.4", "type": "article", "title": "BICEP/Keck. XVII. Line-of-sight Distortion Analysis: Estimates of Gravitational Lensing, Anisotropic Cosmic Birefringence, Patchy Reionization, and Systematic Errors", "author": [ { "family_name": "Ade", "given_name": "P. A. R.", "orcid": "0000-0002-5127-0401", "clpid": "Ade-P-A-R" }, { "family_name": "Ahmed", "given_name": "Z." }, { "family_name": "Amiri", "given_name": "M." }, { "family_name": "Barkats", "given_name": "D." }, { "family_name": "Thakur", "given_name": "R. Basu", "orcid": "0000-0002-3351-3078", "clpid": "Thakur-R-Basu" }, { "family_name": "Bischoff", "given_name": "C. A.", "orcid": "0000-0001-9185-6514" }, { "family_name": "Beck", "given_name": "D." }, { "family_name": "Bock", "given_name": "J. J.", "orcid": "0000-0002-5710-5212", "clpid": "Bock-J-J" }, { "family_name": "Boenish", "given_name": "H." }, { "family_name": "Bullock", "given_name": "E." }, { "family_name": "Buza", "given_name": "V.", "orcid": "0000-0002-1345-4322" }, { "family_name": "IV", "given_name": "J. R. Cheshire", "orcid": "0000-0002-1630-7854" }, { "family_name": "Connors", "given_name": "J." }, { "family_name": "Cornelison", "given_name": "J." }, { "family_name": "Crumrine", "given_name": "M." }, { "family_name": "Cukierman", "given_name": "A.", "orcid": "0000-0002-7471-719X", "clpid": "Cukierman-Ari" }, { "family_name": "Denison", "given_name": "E. V." }, { "family_name": "Dierickx", "given_name": "M.", "orcid": "0000-0002-3519-8593" }, { "family_name": "Duband", "given_name": "L." }, { "family_name": "Eiben", "given_name": "M." }, { "family_name": "Fatigoni", "given_name": "S." }, { "family_name": "Filippini", "given_name": "J. P.", "orcid": "0000-0001-8217-6832" }, { "family_name": "Fliescher", "given_name": "S." }, { "family_name": "Giannakopoulos", "given_name": "C." }, { "family_name": "Goeckner-Wald", "given_name": "N." }, { "family_name": "Goldfinger", "given_name": "D. C.", "orcid": "0000-0001-5268-8423" }, { "family_name": "Grayson", "given_name": "J." }, { "family_name": "Grimes", "given_name": "P.", "orcid": "0000-0001-9292-6297" }, { "family_name": "Hall", "given_name": "G." }, { "family_name": "Halal", "given_name": "G.", "orcid": "0000-0003-2221-3018" }, { "family_name": "Halpern", "given_name": "M.", "orcid": "0000-0002-1760-0868" }, { "family_name": "Hand", "given_name": "E." }, { "family_name": "Harrison", "given_name": "S." }, { "family_name": "Henderson", "given_name": "S." }, { "family_name": "Hildebrandt", "given_name": "S. R.", "orcid": "0000-0003-0220-0009", "clpid": "Hildebrant-Sergi-R" }, { "family_name": "Hubmayr", "given_name": "J." }, { "family_name": "Hui", "given_name": "H.", "orcid": "0000-0001-5812-1903", "clpid": "Hui-Howard" }, { "family_name": "Irwin", "given_name": "K. D.", "orcid": "0000-0002-2998-9743" }, { "family_name": "Kang", "given_name": "J.", "orcid": "0000-0002-3470-2954", "clpid": "Kang-Jae-Hwan" }, { "family_name": "Karkare", "given_name": "K. S.", "orcid": "0000-0002-5215-6993" }, { "family_name": "Karpel", "given_name": "E." }, { "family_name": "Kefeli", "given_name": "S.", "clpid": "Kefeli-S" }, { "family_name": "Kernasovskiy", "given_name": "S. A." }, { "family_name": "Kovac", "given_name": "J. M." }, { "family_name": "Kuo", "given_name": "C. L." }, { "family_name": "Lau", "given_name": "K.", "orcid": "0000-0002-6445-2407" }, { "family_name": "Leitch", "given_name": "E. M." }, { "family_name": "Lennox", "given_name": "A." }, { "family_name": "Megerian", "given_name": "K. G.", "clpid": "Megerian-Krikor-G" }, { "family_name": "Minutolo", "given_name": "L.", "orcid": "0000-0002-4876-112X", "clpid": "Minutolo-Lorenzo" }, { "family_name": "Moncelsi", "given_name": "L.", "orcid": "0000-0002-4242-3015", "clpid": "Moncelsi-Lorenzo" }, { "family_name": "Nakato", "given_name": "Y." }, { "family_name": "Namikawa", "given_name": "T.", "orcid": "0000-0003-3070-9240" }, { "family_name": "Nguyen", "given_name": "H. T.", "clpid": "Nguyen-Hien-Trong" }, { "family_name": "O'Brient", "given_name": "R.", "orcid": "0000-0002-4987-6375", "clpid": "O'Brient-Roger-C" }, { "family_name": "IV", "given_name": "R. W. Ogburn" }, { "family_name": "Palladino", "given_name": "S." }, { "family_name": "Petroff", "given_name": "M.", "orcid": "0000-0002-4436-4215" }, { "family_name": "Prouve", "given_name": "T." }, { "family_name": "Pryke", "given_name": "C.", "orcid": "0000-0003-3983-6668" }, { "family_name": "Racine", "given_name": "B.", "orcid": "0000-0001-8861-3052" }, { "family_name": "Reintsema", "given_name": "C. D." }, { "family_name": "Richter", "given_name": "S." }, { "family_name": "Schillaci", "given_name": "A.", "orcid": "0000-0002-0512-1042", "clpid": "Schillaci-Alessandro" }, { "family_name": "Schwarz", "given_name": "R." }, { "family_name": "Schmitt", "given_name": "B. L." }, { "family_name": "Sheehy", "given_name": "C. D." }, { "family_name": "Singari", "given_name": "B." }, { "family_name": "Soliman", "given_name": "A.", "orcid": "0009-0007-9335-1326", "clpid": "Soliman-Ahmed" }, { "family_name": "Germaine", "given_name": "T. St." }, { "family_name": "Steinbach", "given_name": "B.", "orcid": "0000-0001-6544-7469", "clpid": "Steinbach-Bryan-A" }, { "family_name": "Sudiwala", "given_name": "R. V." }, { "family_name": "Teply", "given_name": "G. P.", "clpid": "Teply-G-P" }, { "family_name": "Thompson", "given_name": "K. L." }, { "family_name": "Tolan", "given_name": "J. E." }, { "family_name": "Tucker", "given_name": "C." }, { "family_name": "Turner", "given_name": "A. D.", "clpid": "Turner-Anthony-D" }, { "family_name": "Umilt\u00e0", "given_name": "C." }, { "family_name": "Verg\u00e8s", "given_name": "C.", "orcid": "0000-0002-3942-1609" }, { "family_name": "Vieregg", "given_name": "A. G." }, { "family_name": "Wandui", "given_name": "A.", "orcid": "0000-0002-8232-7343", "clpid": "Wandui-Albert" }, { "family_name": "Weber", "given_name": "A. C.", "clpid": "Weber-Alexis-C" }, { "family_name": "Wiebe", "given_name": "D. V." }, { "family_name": "Willmert", "given_name": "J.", "orcid": "0000-0002-6452-4693" }, { "family_name": "Wong", "given_name": "C. L." }, { "family_name": "Wu", "given_name": "W. L. K.", "orcid": "0000-0001-5411-6920", "clpid": "Wu-Wai-Ling-Kimmy" }, { "family_name": "Yang", "given_name": "H." }, { "family_name": "Yoon", "given_name": "K. W." }, { "family_name": "Young", "given_name": "E." }, { "family_name": "Yu", "given_name": "C." }, { "family_name": "Zeng", "given_name": "L.", "orcid": "0000-0001-6924-9072" }, { "family_name": "Zhang", "given_name": "C.", "orcid": "0000-0001-8288-5823", "clpid": "Zhang-C" }, { "family_name": "Zhang", "given_name": "S.", "clpid": "Zhang-S" }, { "literal": "BICEP/Keck Collaboration" } ], "abstract": "We present estimates of line-of-sight distortion fields derived from the 95 and 150 GHz data taken by BICEP2, BICEP3, and the Keck Array up to the 2018 observing season, leading to cosmological constraints and a study of instrumental and astrophysical systematics. Cosmological constraints are derived from three of the distortion fields concerning gravitational lensing from large-scale structure, polarization rotation from magnetic fields or an axion-like field, and the screening effect of patchy reionization. We measure an amplitude of the lensing power spectrum A^(\u03d5\u03d5)_(L) = 0.95 \u00b1 0.20. We constrain polarization rotation, expressed as the coupling constant of a Chern\u2013Simons electromagnetic term g_(\u03b1\u03b3) \u2264 2.6 \u00d7 10\u207b\u00b2/H_\u026a, where H_\u026a is the inflationary Hubble parameter, and an amplitude of primordial magnetic fields smoothed over 1 Mpc B_(1Mpc) \u2264 6.6 nG at 95 GHz. We constrain the rms of optical depth fluctuations in a simple \"crinkly surface\" model of patchy reionization, finding A^\u03c4 < 0.19 (2\u03c3) for the coherence scale of L_c = 100. We show that all of the distortion fields of the 95 and 150 GHz polarization maps are consistent with simulations including lensed \u039bCDM, dust, and noise, with no evidence for instrumental systematics. In some cases, the EB and TB quadratic estimators presented here are more sensitive than our previous map-based null tests at identifying and rejecting spurious B-modes that might arise from instrumental effects. Finally, we verify that the standard deprojection filtering in the BICEP/Keck data processing is effective at removing temperature to polarization leakage.", "doi": "10.3847/1538-4357/acc85c", "issn": "0004-637X", "publisher": "American Astronomical Society", "publication": "Astrophysical Journal", "publication_date": "2023-06-01", "series_number": "2", "volume": "949", "issue": "2", "pages": "43" }, { "id": "authors:39pmg-hwk69", "collection": "authors", "collection_id": "39pmg-hwk69", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230404-289763500.9", "type": "article", "title": "BICEP/Keck. XVI. Characterizing Dust Polarization through Correlations with Neutral Hydrogen", "author": [ { "family_name": "Ade", "given_name": "P. A. R.", "orcid": "0000-0002-5127-0401", "clpid": "Ade-Peter-A-R" }, { "family_name": "Ahmed", "given_name": "Z.", "orcid": "0000-0002-9957-448X" }, { "family_name": "Amiri", "given_name": "M.", "orcid": "0000-0001-6523-9029" }, { "family_name": "Barkats", "given_name": "D.", "orcid": "0000-0002-8971-1954" }, { "family_name": "Basu Thakur", "given_name": "R.", "orcid": "0000-0002-3351-3078", "clpid": "Basu-Thakur-Ritoban" }, { "family_name": "Bischoff", "given_name": "C. A.", "orcid": "0000-0001-9185-6514" }, { "family_name": "Beck", "given_name": "D.", "orcid": "0000-0003-0848-2756" }, { "family_name": "Bock", "given_name": "J. J.", "orcid": "0000-0002-5710-5212", "clpid": "Bock-J-J" }, { "family_name": "Boenish", "given_name": "H." }, { "family_name": "Bullock", "given_name": "E." }, { "family_name": "Buza", "given_name": "V.", "orcid": "0000-0002-1345-4322" }, { "family_name": "Cheshire", "given_name": "J. R.", "orcid": "0000-0002-1630-7854" }, { "family_name": "Clark", "given_name": "S. E.", "orcid": "0000-0002-7633-3376" }, { "family_name": "Connors", "given_name": "J.", "orcid": "0000-0002-6094-2943" }, { "family_name": "Cornelison", "given_name": "J.", "orcid": "0000-0002-2088-7345" }, { "family_name": "Crumrine", "given_name": "M." }, { "family_name": "Cukierman", "given_name": "A.", "orcid": "0000-0002-7471-719X", "clpid": "Cukierman-Ari" }, { "family_name": "Denison", "given_name": "E. V." }, { "family_name": "Dierickx", "given_name": "M.", "orcid": "0000-0002-3519-8593" }, { "family_name": "Duband", "given_name": "L." }, { "family_name": "Eiben", "given_name": "M." }, { "family_name": "Fatigoni", "given_name": "S.", "orcid": "0000-0002-3790-7314" }, { "family_name": "Filippini", "given_name": "J. P.", "orcid": "0000-0001-8217-6832" }, { "family_name": "Fliescher", "given_name": "S." }, { "family_name": "Giannakopoulos", "given_name": "C." }, { "family_name": "Goeckner-Wald", "given_name": "N." }, { "family_name": "Goldfinger", "given_name": "D. C.", "orcid": "0000-0001-5268-8423" }, { "family_name": "Grayson", "given_name": "J." }, { "family_name": "Grimes", "given_name": "P.", "orcid": "0000-0001-9292-6297" }, { "family_name": "Hall", "given_name": "G." }, { "family_name": "Halal", "given_name": "G.", "orcid": "0000-0003-2221-3018" }, { "family_name": "Halpern", "given_name": "M.", "orcid": "0000-0002-1760-0868" }, { "family_name": "Hand", "given_name": "E." }, { "family_name": "Harrison", "given_name": "S." }, { "family_name": "Henderson", "given_name": "S." }, { "family_name": "Hildebrandt", "given_name": "S. R.", "orcid": "0000-0003-0220-0009", "clpid": "Hildebrant-Sergi-R" }, { "family_name": "Hubmayr", "given_name": "J.", "orcid": "0000-0002-2781-9302" }, { "family_name": "Hui", "given_name": "H.", "orcid": "0000-0001-5812-1903", "clpid": "Hui-Howard" }, { "family_name": "Irwin", "given_name": "K. D.", "orcid": "0000-0002-2998-9743" }, { "family_name": "Kang", "given_name": "J.", "orcid": "0000-0002-3470-2954", "clpid": "Kang-Jae-Hwan" }, { "family_name": "Karkare", "given_name": "K. S.", "orcid": "0000-0002-5215-6993" }, { "family_name": "Karpel", "given_name": "E." }, { "family_name": "Kefeli", "given_name": "S.", "clpid": "Kefeli-Sinan" }, { "family_name": "Kernasovskiy", "given_name": "S. A." }, { "family_name": "Kovac", "given_name": "J. M." }, { "family_name": "Kuo", "given_name": "C. L." }, { "family_name": "Lau", "given_name": "K.", "orcid": "0000-0002-6445-2407" }, { "family_name": "Leitch", "given_name": "E. M.", "orcid": "0000-0001-8553-9336" }, { "family_name": "Lennox", "given_name": "A." }, { "family_name": "Megerian", "given_name": "K. G.", "clpid": "Megerian-Krikor-G" }, { "family_name": "Minutolo", "given_name": "L.", "orcid": "0000-0002-4876-112X", "clpid": "Minutolo-Lorenzo" }, { "family_name": "Moncelsi", "given_name": "L.", "orcid": "0000-0002-4242-3015", "clpid": "Moncelsi-Lorenzo" }, { "family_name": "Nakato", "given_name": "Y." }, { "family_name": "Namikawa", "given_name": "T.", "orcid": "0000-0003-3070-9240" }, { "family_name": "Nguyen", "given_name": "H. T.", "clpid": "Nguyen-Hien-Trong" }, { "family_name": "O'Brient", "given_name": "R.", "orcid": "0000-0002-4987-6375", "clpid": "O'Brient-Roger-C" }, { "family_name": "Ogburn", "given_name": "R. W., IV", "orcid": "0000-0002-1343-2684" }, { "family_name": "Palladino", "given_name": "S." }, { "family_name": "Petroff", "given_name": "M. A.", "orcid": "0000-0002-4436-4215" }, { "family_name": "Prouve", "given_name": "T.", "orcid": "0000-0001-5562-6690" }, { "family_name": "Pryke", "given_name": "C.", "orcid": "0000-0003-3983-6668" }, { "family_name": "Racine", "given_name": "B.", "orcid": "0000-0001-8861-3052" }, { "family_name": "Reintsema", "given_name": "C. D." }, { "family_name": "Richter", "given_name": "S." }, { "family_name": "Schillaci", "given_name": "A.", "orcid": "0000-0002-0512-1042", "clpid": "Schillaci-Alessandro" }, { "family_name": "Schwarz", "given_name": "R.", "orcid": "0000-0001-8227-1020" }, { "family_name": "Schmitt", "given_name": "B. L." }, { "family_name": "Sheehy", "given_name": "C. D." }, { "family_name": "Singari", "given_name": "B.", "orcid": "0000-0001-7387-0881" }, { "family_name": "Soliman", "given_name": "A.", "orcid": "0009-0007-9335-1326", "clpid": "Soliman-Ahmed" }, { "family_name": "St. Germaine", "given_name": "T." }, { "family_name": "Steinbach", "given_name": "B.", "orcid": "0000-0001-6544-7469", "clpid": "Steinbach-Bryan-A" }, { "family_name": "Sudiwala", "given_name": "R. V." }, { "family_name": "Teply", "given_name": "G. P.", "clpid": "Teply-Grant-P" }, { "family_name": "Thompson", "given_name": "K. L." }, { "family_name": "Tolan", "given_name": "J. E.", "orcid": "0000-0002-2755-4404" }, { "family_name": "Tucker", "given_name": "C.", "orcid": "0000-0002-1851-3918" }, { "family_name": "Turner", "given_name": "A. D.", "clpid": "Turner-Anthony-D" }, { "family_name": "Umilt\u00e0", "given_name": "C.", "orcid": "0000-0002-6805-6188" }, { "family_name": "Verg\u00e8s", "given_name": "C.", "orcid": "0000-0002-3942-1609" }, { "family_name": "Vieregg", "given_name": "A. G." }, { "family_name": "Wandui", "given_name": "A.", "orcid": "0000-0002-8232-7343", "clpid": "Wandui-Albert-K" }, { "family_name": "Weber", "given_name": "A. C.", "clpid": "Weber-Alexis-C" }, { "family_name": "Wiebe", "given_name": "D. V.", "orcid": "0000-0002-6669-3159" }, { "family_name": "Willmert", "given_name": "J.", "orcid": "0000-0002-6452-4693" }, { "family_name": "Wong", "given_name": "C. L." }, { "family_name": "Wu", "given_name": "W. L. K.", "orcid": "0000-0001-5411-6920", "clpid": "Wu-Wai-Ling-Kimmy" }, { "family_name": "Yang", "given_name": "H." }, { "family_name": "Yoon", "given_name": "K. W." }, { "family_name": "Young", "given_name": "E." }, { "family_name": "Yu", "given_name": "C.", "orcid": "0000-0002-8542-232X" }, { "family_name": "Zeng", "given_name": "L.", "orcid": "0000-0001-6924-9072" }, { "family_name": "Zhang", "given_name": "C.", "orcid": "0000-0001-8288-5823", "clpid": "Zhang-Cheng" }, { "family_name": "Zhang", "given_name": "S.", "clpid": "Zhang-Silvia" } ], "abstract": "We characterize Galactic dust filaments by correlating BICEP/Keck and Planck data with polarization templates based on neutral hydrogen (H i) observations. Dust polarization is important for both our understanding of astrophysical processes in the interstellar medium (ISM) and the search for primordial gravitational waves in the cosmic microwave background (CMB). In the diffuse ISM, H i is strongly correlated with the dust and partly organized into filaments that are aligned with the local magnetic field. We analyze the deep BICEP/Keck data at 95, 150, and 220 GHz, over the low-column-density region of sky where BICEP/Keck has set the best limits on primordial gravitational waves. We separate the H i emission into distinct velocity components and detect dust polarization correlated with the local Galactic H i but not with the H i associated with Magellanic Stream i. We present a robust, multifrequency detection of polarized dust emission correlated with the filamentary H i morphology template down to 95 GHz. For assessing its utility for foreground cleaning, we report that the Hi morphology template correlates in B modes at a \u223c10%\u201365% level over the multipole range 20 \u2113 < 200 with the BICEP/Keck maps, which contain contributions from dust, CMB, and noise components. We measure the spectral index of the filamentary dust component spectral energy distribution to be \u03b2 = 1.54 \u00b1 0.13. We find no evidence for decorrelation in this region between the filaments and the rest of the dust field or from the inclusion of dust associated with the intermediate velocity H i. Finally, we explore the morphological parameter space in the H i-based filamentary model.", "doi": "10.3847/1538-4357/acb64c", "issn": "0004-637X", "publisher": "American Astronomical Society", "publication": "Astrophysical Journal", "publication_date": "2023-03-01", "series_number": "1", "volume": "945", "issue": "1", "pages": "Art. No. 72" }, { "id": "authors:nxers-gw529", "collection": "authors", "collection_id": "nxers-gw529", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190930-144824603", "type": "article", "title": "Microwave multiplexing on the Keck Array", "author": [ { "family_name": "Cukierman", "given_name": "A.", "orcid": "0000-0002-7471-719X", "clpid": "Cukierman-Ari" }, { "family_name": "Basu Thakur", "given_name": "R.", "orcid": "0000-0002-3351-3078", "clpid": "Basu-Thakur-R" }, { "family_name": "Bock", "given_name": "J. J.", "orcid": "0000-0002-5710-5212", "clpid": "Bock-J-J" }, { "family_name": "Hui", "given_name": "H.", "clpid": "Hui-Howard" }, { "family_name": "Kefeli", "given_name": "S.", "clpid": "Kefeli-Sinan" }, { "family_name": "Moncelsi", "given_name": "L.", "orcid": "0000-0002-4242-3015", "clpid": "Moncelsi-Lorenzo" }, { "family_name": "Nguyen", "given_name": "H. T.", "clpid": "Nguyen-Hien-Trong" }, { "family_name": "O'Brient", "given_name": "R.", "clpid": "O'Brient-Roger" }, { "family_name": "Schillaci", "given_name": "A.", "orcid": "0000-0002-0512-1042", "clpid": "Schillaci-Alessandro" }, { "family_name": "Soliman", "given_name": "A.", "clpid": "Soliman-Ahmed" }, { "family_name": "Steinbach", "given_name": "B.", "clpid": "Steinbach-Bryan-A" }, { "family_name": "Wandui", "given_name": "A.", "orcid": "0000-0002-8232-7343", "clpid": "Wandui-Albert" }, { "family_name": "Zhang", "given_name": "C.", "orcid": "0000-0001-8288-5823", "clpid": "Zhang-Cheng" } ], "abstract": "We describe an on-sky demonstration of a microwave-multiplexing readout system in one of the receivers of the Keck Array, a polarimetry experiment observing the cosmic microwave background at the South Pole. During the austral summer of 2018\u20132019, we replaced the time-division multiplexing readout system with microwave-multiplexing components including superconducting microwave resonators coupled to radio frequency superconducting quantum interference devices at the sub-Kelvin focal plane, coaxial-cable plumbing and amplification between room temperature and the cold stages, and a SLAC Microresonator Radio Frequency system for the warm electronics. In the range 5\u20136 GHz, a single coaxial cable reads out 528 channels. The readout system is coupled to transition-edge sensors, which are in turn coupled to 150-GHz slot-dipole phased-array antennas. Observations began in April 2019, and we report here on an initial characterization of the system performance.", "doi": "10.1007/s10909-019-02296-2", "issn": "0022-2291", "publisher": "Springer", "publication": "Journal of Low Temperature Physics", "publication_date": "2020-05", "series_number": "3-4", "volume": "199", "issue": "3-4", "pages": "858-866" } ]