Related papers: Characterizing the Sensitivity of 40 GHz TES Bolom…

The CLASS 150/220 GHz Polarimeter Array: Design, Assembly, and Characterization

We report on the development of a polarization-sensitive dichroic (150/220 GHz) detector array for the Cosmology Large Angular Scale Surveyor (CLASS) delivered to the telescope site in June 2019. In concert with existing 40 and 90 GHz…

Instrumentation and Methods for Astrophysics · Physics 2020-01-20 Sumit Dahal , Mandana Amiri , John W. Appel , Charles L. Bennett , Lance Corbett , Rahul Datta , Kevin Denis , Thomas Essinger-Hileman , Mark Halpern , Kyle Helson , Gene Hilton , Johannes Hubmayr , Benjamin Keller , Tobias Marriage , Carolina Nunez , Matthew Petroff , Carl Reintsema , Karwan Rostem , Kongpop U-Yen , Edward Wollack

Forecasting sensitivity on tilt of power spectrum of primordial gravitational waves after Planck satellite

By taking into account the contamination of foreground radiations, we employ the Fisher matrix to forecast the future sensitivity on the tilt of power spectrum of primordial tensor perturbations for several ground-based (AdvACT, CLASS,…

Cosmology and Nongalactic Astrophysics · Physics 2015-10-21 Qing-Guo Huang , Sai Wang , Wen Zhao

BICEP / Keck XIV: Improved constraints on axion-like polarization oscillations in the cosmic microwave background

We present an improved search for axion-like polarization oscillations in the cosmic microwave background (CMB) with observations from the Keck Array. An all-sky, temporally sinusoidal rotation of CMB polarization, equivalent to a…

Cosmology and Nongalactic Astrophysics · Physics 2022-03-17 Keck Collaboration , P. A. R. Ade , Z. Ahmed , M. Amiri , D. Barkats , R. Basu Thakur , C. A. Bischoff , D. Beck , J. J. Bock , H. Boenish , E. Bullock , V. Buza , J. R. Cheshire , J. Connors , J. Cornelison , M. Crumrine , A. Cukierman , E. V. Denison , M. Dierickx , L. Duband , M. Eiben , S. Fatigoni , J. P. Filippini , S. Fliescher , N. Goeckner-Wald , D. C. Goldfinger , J. Grayson , P. Grimes , G. Hall , G. Halal , M. Halpern , E. Hand , S. Harrison , S. Henderson , S. R. Hildebrandt , G. C. Hilton , J. Hubmayr , H. Hui , K. D. Irwin , J. Kang , K. S. Karkare , E. Karpel , S. Kefeli , S. A. Kernasovskiy , J. M. Kovac , C. L. Kuo , K. Lau , E. M. Leitch , A. Lennox , K. G. Megerian , L. Minutolo , L. Moncelsi , Y. Nakato , T. Namikawa , H. T. Nguyen , R. O'Brient , R. W. Ogburn , S. Palladino , T. Prouve , C. Pryke , B. Racine , C. D. Reintsema , S. Richter , A. Schillaci , R. Schwarz , B. L. Schmitt , C. D. Sheehy , A. Soliman , T. St. Germaine , B. Steinbach , R. V. Sudiwala , G. P. Teply , K. L. Thompson , J. E. Tolan , C. Tucker , A. D. Turner , C. Umilta , C. Verges , A. G. Vieregg , A. Wandui , A. C. Weber , D. V. Wiebe , J. Willmert , C. L. Wong , W. L. K. Wu , H. Yang , K. W. Yoon , E. Young , C. Yu , L. Zeng , C. Zhang , S. Zhang

Observing low elevation sky and the CMB Cold Spot with BICEP3 at the South Pole

BICEP3 is a 520 mm aperture on-axis refracting telescope at the South Pole, which observes the polarization of the cosmic microwave background (CMB) at 95 GHz to search for the B-mode signal from inflationary gravitational waves. In…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-21 J. Kang , P. A. R. Ade , Z. Ahmed , M. Amiri , D. Barkats , R. Basu Thakur , C. A. Bischoff , J. J. Bock , H. Boenish , E. Bullock , V. Buza , J. R. Cheshire , J. Connors , J. Cornelison , M. Crumrine , A. Cukierman , E. Denison , M. Dierickx , L. Duband , M. Eiben , S. Fatigoni , J. P. Filippini , S. Fliescher , N. Goeckner-Wald , D. C. Goldfinger , J. A. Grayson , P. Grimes , G. Hall , M. Halpern , S. A. Harrison , S. Henderson , S. R. Hildebrandt , G. C. Hilton , J. Hubmayr , H. Hui , K. D. Irwin , K. S. Karkare , E. Karpel , S. Kefeli , S. A. Kernasovskiy , J. M. Kovac , C. L. Kuo , K. Lau , E. M. Leitch , K. G. Megerian , L. Minutolo , L. Moncelsi , Y. Nakato , T. Namikawa , H. T. Nguyen , R. O'Brient , R. W. Ogburn , S. Palladino , N. Precup , T. Prouve , C. Pryke , B. Racine , C. D. Reintsema , S. Richter , A. Schillaci , B. L. Schmitt , R. Schwarz , C. D. Sheehy , A. Soliman , T. St. Germaine , B. Steinbach , R. V. Sudiwala , G. P. Teply , K. L. Thompson , J. E. Tolan , C. Tucker , A. D. Turner , C. Umiltà , A. G. Vieregg , A. Wandui , A. C. Weber , D. V. Wiebe , J. Willmert , C. L. Wong , W. L. K. Wu , E. Yang , K. W. Yoon , E. Young , C. Yu , L. Zeng , C. Zhang , S. Zhang

Multi-chroic dual-polarization bolometric detectors for studies of the Cosmic Microwave Background

We are developing multi-chroic antenna-coupled TES detectors for CMB polarimetry. Multi-chroic detectors increase the mapping speed per focal plane area and provide greater discrimination of polarized galactic foregrounds with no increase…

Instrumentation and Methods for Astrophysics · Physics 2012-11-01 Aritoki Suzuki , Kam Arnold , Jennifer Edwards , Greg Engargiola , Adnan Ghribi , William Holzapfel , Adrian T. Lee , Xiao Fan Meng , Michael J. Myers , Roger O'Brient , Erin Quealy , Gabriel Rebeiz , Paul Richards , Darin Rosen , Praween Siritanasak

Self-Calibration of BICEP1 Three-Year Data and Constraints on Astrophysical Polarization Rotation

Cosmic Microwave Background (CMB) polarimeters aspire to measure the faint $B$-mode signature predicted to arise from inflationary gravitational waves. They also have the potential to constrain cosmic birefringence which would produce…

Instrumentation and Methods for Astrophysics · Physics 2014-04-02 J. P. Kaufman , N. J. Miller , M. Shimon , D. Barkats , C. Bischoff , I. Buder , B. G. Keating , J. M. Kovac , P. A. R. Ade , R. Aikin , J. O. Battle , E. M. Bierman , J. J. Bock , H. C. Chiang , C. D. Dowell , L. Duband , J. Filippini , E. F. Hivon , W. L. Holzapfel , V. V. Hristov , W. C. Jones , S. S. Kernasovskiy , C. L. Kuo , E. M. Leitch , P. V. Mason , T. Matsumura , H. T. Nguyen , N. Ponthieu , C. Pryke , S. Richter , G. Rocha , C. Sheehy , M. Su , Y. D. Takahashi , J. E. Tolan , K. W. Yoon

A Measurement of the Degree Scale CMB B-mode Angular Power Spectrum with POLARBEAR

We present a measurement of the $B$-mode polarization power spectrum of the cosmic microwave background (CMB) using taken from July 2014 to December 2016 with the POLARBEAR experiment. The CMB power spectra are measured using observations…

Cosmology and Nongalactic Astrophysics · Physics 2021-01-15 S. Adachi , M. A. O. Aguilar Faúndez , K. Arnold , C. Baccigalupi , D. Barron , D. Beck , S. Beckman , F. Bianchini , D. Boettger , J. Borrill , J. Carron , S. Chapman , K. Cheung , Y. Chinone , K. Crowley , A. Cukierman , M. Dobbs , H. El Bouhargani , T. Elleflot , J. Errard , G. Fabbian , C. Feng , T. Fujino , N. Galitzki , N. Goeckner-Wald , J. Groh , G. Hall , N. Halverson , T. Hamada , M. Hasegawa , M. Hazumi , C. A. Hill , L. Howe , Y. Inoue , G. Jaehnig , O. Jeong , D. Kaneko , N. Katayama , B. Keating , R. Keskitalo , S. Kikuchi , T. Kisner , N. Krachmalnicoff , A. Kusaka , A. T. Lee , D. Leon , E. Linder , L. N. Lowry , A. Mangu , F. Matsuda , Y. Minami , M. Navaroli , H. Nishino , A. T. P. Pham , D. Poletti , G. Puglisi , C. L. Reichardt , Y. Segawa , M. Silva-Feaver , P. Siritanasak , N. Stebor , R. Stompor , A. Suzuki , O. Tajima , S. Takakura , S. Takatori , D. Tanabe , G. P. Teply , C. Tsai , C. Verges , B. Westbrook , Y. Zhou

Search for Gravitational Waves in the CMB After WMAP3: Foreground Confusion and The Optimal Frequency Coverage for Foreground Minimization

B-modes of Cosmic Microwave Background (CMB) polarization can be created by a primordial gravitational wave background. If this background was created by Inflation, then the amplitude of the polarization signal is proportional the energy…

Astrophysics · Physics 2008-11-26 Alexandre Amblard , Asantha Cooray , Manoj Kaplinghat

TES Bolometer Design and Testing for the Tomographic Ionized-carbon Mapping Experiment Millimeter Array

Transition Edge Sensor (TES) bolometers are a well-established technology with a strong track record in experimental cosmology, making them ideal for current and future radio astronomy instruments. The Tomographic Ionized-carbon Mapping…

Instrumentation and Methods for Astrophysics · Physics 2025-10-06 Victoria L. Butler , James J. Bock , Dongwoo T. Chung , Abigail T. Crites , King Lau , Ian Lowe , Dan P. Marrone , Evan C. Mayer , Benjamin J. Vaughan , Michael Zemcov

Cold-electron bolometer, as a 1 cm wavelength photon counter

We investigate theoretically the possibility of using the cold-electron bolometer (CEB) as a counter for 1 cm wavelength (30 GHz) photons. To reduce the flux of photons from the environment, which interact with the detector, the bath…

Mesoscale and Nanoscale Physics · Physics 2019-12-30 D. V. Anghel , L. S. Kuzmin

Design and characterization of new 90 GHz detectors for the Cosmology Large Angular Scale Surveyor (CLASS)

The Cosmology Large Angular Scale Surveyor (CLASS) is a polarization-sensitive telescope array located at an altitude of 5,200 m in the Chilean Atacama Desert. CLASS is designed to measure "E-mode" (even parity) and "B-mode" (odd parity)…

Instrumentation and Methods for Astrophysics · Physics 2022-08-11 Carolina Núñez , John W. Appel , Sarah Marie Bruno , Rahul Datta , Aamir Ali , Charles L. Bennett , Sumit Dahal , Jullianna Denes Couto , Kevin L. Denis , Joseph Eimer , Francisco Espinoza , Tom Essinger-Hileman , Kyle Helson , Jeffrey Iuliano , Tobias A. Marriage , Carolina Morales Pérez , Deniz Augusto Nunes Valle , Matthew A. Petroff , Karwan Rostem , Rui Shi , Duncan J. Watts , Edward J. Wollack , Zhilei Xu

Detecting Primordial $B$-Modes after Planck

We update the forecasts for the measurement of the tensor-to-scalar ratio $r$ for various ground-based experiments (AdvACT, CLASS, Keck/BICEP3, Simons Array, SPT-3G), balloons (EBEX 10k and Spider) and satellites (CMBPol, COrE and…

Cosmology and Nongalactic Astrophysics · Physics 2015-11-19 Paolo Creminelli , Diana López Nacir , Marko Simonović , Gabriele Trevisan , Matias Zaldarriaga

A Demonstration of Improved Constraints on Primordial Gravitational Waves with Delensing

We present a constraint on the tensor-to-scalar ratio, $r$, derived from measurements of cosmic microwave background (CMB) polarization $B$-modes with "delensing," whereby the uncertainty on $r$ contributed by the sample variance of the…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-02 BICEP/Keck , SPTpol Collaborations , : , P. A. R. Ade , Z. Ahmed , M. Amiri , A. J. Anderson , J. E. Austermann , J. S. Avva , D. Barkats , R. Basu Thakur , J. A. Beall , A. N. Bender , B. A. Benson , F. Bianchini , C. A. Bischoff , L. E. Bleem , J. J. Bock , H. Boenish , E. Bullock , V. Buza , J. E. Carlstrom , C. L. Chang , J. R. Cheshire , H. C. Chiang , T-L. Chou , R. Citron , J. Connors , C. Corbett Moran , J. Cornelison , T. M. Crawford , A. T. Crites , M. Crumrine , A. Cukierman , T. de Haan , M. Dierickx , M. A. Dobbs , L. Duband , W. Everett , S. Fatigoni , J. P. Filippini , S. Fliescher , J. Gallicchio , E. M. George , T. St. Germaine , N. Goeckner-Wald , D. C. Goldfinger , J. Grayson , N. Gupta , G. Hall , M. Halpern , N. W. Halverson , S. Harrison , S. Henderson , J. W. Henning , S. R. Hildebrandt , G. C. Hilton , G. P. Holder , W. L. Holzapfel , J. D. Hrubes , N. Huang , J. Hubmayr , H. Hui , K. D. Irwin , J. Kang , K. S. Karkare , E. Karpel , S. Kefeli , S. A. Kernasovskiy , L. Knox , J. M. Kovac , C. L. Kuo , K. Lau , A. T. Lee , E. M. Leitch , D. Li , A. Lowitz , A. Manzotti , J. J. McMahon , K. G. Megerian , S. S. Meyer , M. Millea , L. M. Mocanu , L. Moncelsi , J. Montgomery , A. Nadolski , T. Namikawa , T. Natoli , C. B. Netterfield , H. T. Nguyen , J. P. Nibarger , G. Noble , V. Novosad , R. O'Brient , R. W. Ogburn , Y. Omori , S. Padin , S. Palladino , S. Patil , T. Prouve , C. Pryke , B. Racine , C. L. Reichardt , C. D. Reintsema , S. Richter , J. E. Ruhl , B. R. Saliwanchik , K. K. Schaffer , A. Schillaci , B. L. Schmitt , R. Schwarz , C. D. Sheehy , C. Sievers , G. Smecher , A. Soliman , A. A. Stark , B. Steinbach , R. V. Sudiwala , G. P. Teply , K. L. Thompson , J. E. Tolan , C. Tucker , A. D. Turner , C. Umiltà , T. Veach , J. D. Vieira , A. G. Vieregg , A. Wandui , G. Wang , A. C. Weber , N. Whitehorn , D. V. Wiebe , J. Willmert , C. L. Wong , W. L. K. Wu , H. Yang , V. Yefremenko , K. W. Yoon , E. Young , C. Yu , L. Zeng , C. Zhang

Measuring the tensor to scalar ratio from CMB B-modes in presence of foregrounds

Abreg: We investigate the impact of polarized foreground emission on the performances of future CMB experiments in measuring the tensor-to-scalar ratio r. We design a component separation pipeline, based on the Smica method, aimed at…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Marc Betoule , E. Pierpaoli , J. Delabrouille , M. Le Jeune , Jean-François Cardoso

BICEP/Keck XIX: Extremely Thin Composite Polymer Vacuum Windows for BICEP and Other High Throughput Millimeter Wave Telescopes

Millimeter-wave refracting telescopes targeting the degree-scale structure of the cosmic microwave background (CMB) have recently grown to diffraction-limited apertures of over 0.5 meters. These instruments are entirely housed in vacuum…

Instrumentation and Methods for Astrophysics · Physics 2026-03-16 Keck Collaboration , P. A. R. Ade , Z. Ahmed , M. Amiri , D. Barkats , R. Basu Thakur , C. A. Bischoff , D. Beck , J. J. Bock , H. Boenish , V. Buza , K. Carter , J. R. Cheshire , J. Connors , J. Cornelison , L. Corrigan , M. Crumrine , S. Crystian , A. J. Cukierman , E. Denison , L. Duband , M. Echter , M. Eiben , B. D. Elwood , S. Fatigoni , J. P. Filippini , A. Fortes , M. Gao , C. Giannakopoulos , N. Goeckner-Wald , D. C. Goldfinger , J. A. Grayson , A. Greathouse , P. K. Grimes , G. Hall , G. Halal , M. Halpern , E. Hand , S. A. Harrison , S. Henderson , J. Hubmayr , H. Hui , K. D. Irwin , J. H. Kang , K. S. Karkare , S. Kefeli , J. M. Kovac , C. Kuo , K. Lau , M. Lautzenhiser , A. Lennox , T. Liu , K. G. Megerian , M. Miller , L. Minutolo , L. Moncelsi , Y. Nakato , H. T. Nguyen , R. O'brient , S. Paine , A. Patel , M. A. Petroff , A. R. Polish , T. Prouve , C. Pryke , C. D. Reintsema , T. Romand , D. Santalucia , A. Schillaci , B. Schmitt , E. Sheffield , B. Singari , K. Sjoberg , A. Soliman , T. St Germaine , A. Steiger , B. Steinbach , R. Sudiwala , K. L. Thompson , C. Tsai , C. Tucker , A. D. Turner , C. Vergès , A. G. Vieregg , A. Wandui , A. C. Weber , J. Willmert , W. L. K. Wu , H. Yang , C. Yu , L. Zeng , C. Zhang , S. Zhang

On the road to discovery of relic gravitational waves: The TE and BB Correlations in the cosmic microwave background radiation

The detection of primordial gravitational waves is one of the biggest challenges of the present time. The existing (Wilkinson Microwave Anisotropy Probe) observations are helpful on the road to this goal, and the forthcoming experiments…

Astrophysics · Physics 2014-11-18 W. Zhao , D. Baskaran , L. P. Grishchuk

Constraints on cosmological birefringence from Planck and Bicep2/Keck data

The polarization of cosmic microwave background (CMB) can be used to constrain cosmological birefringence, the rotation of the linear polarization of CMB photons potentially induced by parity violating physics beyond the standard model.…

Cosmology and Nongalactic Astrophysics · Physics 2016-06-08 A. Gruppuso , M. Gerbino , P. Natoli , L. Pagano , N. Mandolesi , D. Molinari

Ultra High Energy Cosmology with POLARBEAR

Observations of the temperature anisotropy of the Cosmic Microwave Background (CMB) lend support to an inflationary origin of the universe, yet no direct evidence verifying inflation exists. Many current experiments are focussing on the…

Cosmology and Nongalactic Astrophysics · Physics 2011-10-11 B. Keating , S. Moyerman , D. Boettger , J. Edwards , G. Fuller , F. Matsuda , N. Miller , H. Paar , G. Rebeiz , I. Schanning , M. Shimon , N. Stebor , K. Arnold , D. Flanigan , W. Holzapfel , J. Howard , Z. Kermish , A. Lee , M. Lungu , M. Myers , H. Nishino , R. O'Brient , E. Quealy , C. Reichardt , P. Richards , C. Shimmin , B. Steinbach , A. Suzuki , O. Zahn , J. Borrill , C. Cantalupo , E. Kisner , E. Linder , M. Sholl , H. Spieler , A. Anthony , N. Halverson , J. Errard , G. Fabbian , M. Le Jeune , R. Stompor , A. Jaffe , D. O'Dea , Y. Chinone , M. Hasegawa , M. Hazumi , T. Matsumura , H. Morii , A. Shimizu , T. Tomaru , P. Hyland , M. Dobbs , P. Ade , W. Grainger , C. Tucker

Precision of future experiments measuring primordial tensor fluctuation

Recently the second phase of Background Imaging of Cosmic Extragalactic Polarization (BICEP2) claimed a detection of the tensor-to-scalar ratio ($r$) of primordial fluctuation at $5\sigma$ confidence level. If it is true, this large and…

Cosmology and Nongalactic Astrophysics · Physics 2014-08-06 Yi Wang , Yin-Zhe Ma

Primordial Gravitational Waves Measurements and Anisotropies of CMB Polarization Rotation

Searching for the signal of primordial gravitational waves in the B-modes (BB) power spectrum is one of the key scientific aims of the cosmic microwave background (CMB) polarization experiments. However, this could be easily contaminated by…

Cosmology and Nongalactic Astrophysics · Physics 2015-11-18 Si-Yu Li , Jun-Qing Xia , Mingzhe Li , Hong Li , Xinmin Zhang