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The Simons Observatory (SO) is a ground-based cosmic microwave background (CMB) survey experiment that consists of three 0.5 m small-aperture telescopes (SATs) and one 6 m large-aperture telescope (LAT), sited at an elevation of 5200 m in…

The cosmic microwave background radiation (CMB) is now firmly established as a fundamental and essential probe of the geometry, constituents, and birth of the Universe. The CMB is a potent observable because it can be measured with…

Instrumentation and Methods for Astrophysics · Physics 2015-06-05 S. Hanany , M. Niemack , L. Page

The balloon-borne LSPE mission is optimized to measure the linear polarization of the Cosmic Microwave Background at large angular scales. The Short Wavelength Instrument for the Polarization Explorer (SWIPE) is composed of 3 arrays of…

We study the general properties of the CMB temperature four-point function, specifically its harmonic analogue the angular trispectrum, and illustrate its utility in finding optimal quadratic statistics through the weak gravitational…

Astrophysics · Physics 2009-11-06 Wayne Hu

Large astronomical instruments using tens to hundreds of optical or infrared science detectors pose specific challenges for detector control, where, in addition to performance, other engineering aspects like scalability, power consumption,…

We present a novel system to calibrate millimeter-wave polarimeters for CMB polarization measurements. This technique is an extension of the conventional metal mirror rotation approach, however it employs cryogenically-cooled blackbody…

Instrumentation and Methods for Astrophysics · Physics 2012-05-01 M. Hasegawa , O. Tajima , Y. Chinone , M. Hazumi , K. Ishidoshiro , M. Nagai

The Advanced ACTPol upgrade on the Atacama Cosmology Telescope aims to improve the measurement of the cosmic microwave background anisotropies and polarization, using four new dichroic detector arrays fabricated on 150-mm silicon wafers.…

The six-meter Atacama Cosmology Telescope (ACT) in Chile was built to measure the cosmic microwave background (CMB) at arcminute angular scales. We are building a new polarization sensitive receiver for ACT (ACTPol). ACTPol will…

The CMB polarization is the Everest in the quest to characterize the earliest photons from the Universe. After a long list of ever-decreasing upper limits, a detection of polarization was made in 2002 by the DASI team at ell =~ 500. The…

Instrumentation and Methods for Astrophysics · Physics 2024-11-28 Denis Barkats

The LSPE is a balloon-borne mission aimed at measuring the polarization of the Cosmic Microwave Background (CMB) at large angular scales, and in particular to constrain the curl component of CMB polarization (B-modes) produced by tensor…

A major goal of upcoming experiments measuring the Cosmic Microwave Background Radiation (CMBR) is to reveal the subtle signature of inflation in the polarization pattern which requires unprecedented sensitivity and control of systematics.…

Astrophysics · Physics 2019-08-13 Dorothea Samtleben

QUBIC, the QU Bolometric Interferometer for Cosmology, is a novel forthcoming instrument to measure the B-mode polarization anisotropy of the Cosmic Microwave Background. The detection of the B-mode signal will be extremely challenging;…

Instrumentation and Methods for Astrophysics · Physics 2018-11-07 A. J. May , C. Chapron , G. Coppi , G. D'Alessandro , P. de Bernardis , S. Masi , S. Melhuish , M. Piat , L. Piccirillo , A. Schillaci , J. -P. Thermeau , P. Ade , G. Amico , D. Auguste , J. Aumont , S. Banfi , G. Barbara , P. Battaglia , E. Battistelli , A. Bau , B. Belier , D. Bennett , L. Berge , J. -Ph. Bernard , M. Bersanelli , M. -A. Bigot-Sazy , N. Bleurvacq , J. Bonaparte , J. Bonis , G. Bordier , E. Breelle , E. Bunn , D. Burke , D. Buzi , A. Buzzelli , F. Cavaliere , P. Chanial , R. Charlassier , F. Columbro , A. Coppolecchia , F. Couchot , R. D'Agostino , G. De Gasperis , M. De Leo , M. De Petris , A. Di Donato , L. Dumoulin , A. Etchegoyen , A. Fasciszewski , C. Franceschet , M. M. Gamboa Lerena , B. Garcia , X. Garrido , M. Gaspard , A. Gault , D. Gayer , M. Gervasi , M. Giard , Y. Giraud-Heraud , M. Gomez Berisso , M. Gonzalez , M. Gradziel , L. Grandsire , E. Guerrard , J. -Ch. Hamilton , D. Harari , V. Haynes , S. Henrot-Versille , D. T. Hoang , F. Incardona , E. Jules , J. Kaplan , A. Korotkov , C. Kristukat , L. Lamagna , S. Loucatos , T. Louis , A. Lowitz , V. Lukovic , R. Luterstein , B. Maffei , S. Marnieros , A. Mattei , M. A. McCulloch , M. C. Medina , L. Mele , A. Mennella , L. Montier , L. M. Mundo , J. A. Murphy , J. D. Murphy , C. O'Sullivan , E. Olivieri , A. Paiella , F. Pajot , A. Passerini , H. Pastoriza , A. Pelosi , C. Perbost , O. Perdereau , F. Pezzotta , F. Piacentini , G. Pisano , G. Polenta , D. Prele , R. Puddu , D. Rambaud , P. Ringegni , G. E. Romero , M. Salatino , C. G. Scoccola , S. Scully , S. Spinelli , M. Stolpovskiy , F. Suarez , A. Tartari , P. Timbie , S. A. Torchinsky , M. Tristram , V. Truongcanh , C. Tucker , G. Tucker , S. Vanneste , D. Vigano , N. Vittorio , F. Voisin , B. Watson , F. Wicek , M. Zannoni , A. Zullo

The highly sensitive millimeter-wave telescope is an important tool for accurate measurement of Cosmic Microwave Background (CMB) radiation, and its core component is a detector array located in a cryogenic focal plane. The feasibility of…

Instrumentation and Methods for Astrophysics · Physics 2024-01-29 Ye Chai , Shibo Shu , Yongping Li , Jiamin Sun , Zhouhui Liu , Yu Xu , Daikang Yan , Zhengwei Li , Yang Liu , Yiwen Wang , Weijie Guo , Juexian Cao , Congzhan Liu

We forecast constraints on cosmological parameters enabled by three surveys conducted with SPT-3G, the third-generation camera on the South Pole Telescope. The surveys cover separate regions of 1500, 2650, and 6000 ${\rm deg}^{2}$ to…

We review the first science results from the Arcminute Cosmology Bolometer Array Receiver (ACBAR); a multifrequency millimeter-wave receiver optimized for observations of the Cosmic Microwave Background (CMB) and the Sunyaev-Zel'dovich (SZ)…

The Next Generation Balloon-borne Large Aperture Submillimeter Telescope (BLAST-TNG) is a submillimeter mapping experiment planned for a 28 day long-duration balloon (LDB) flight from McMurdo Station, Antarctica during the 2018-2019 season.…

ALMA has been operating since 2011, but has not yet been populated with the full suite of intended frequency bands. In particular, ALMA Band 2 (67-90 GHz) is the final band in the original ALMA band definition to be approved for production.…

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