Related papers: CLASS Angular Power Spectra and Map-Component Anal…

Measurement of Cosmic Microwave Background Polarization Power Spectra from Two Years of BICEP Data

Background Imaging of Cosmic Extragalactic Polarization (BICEP) is a bolometric polarimeter designed to measure the inflationary B-mode polarization of the cosmic microwave background (CMB) at degree angular scales. During three seasons of…

Cosmology and Nongalactic Astrophysics · Physics 2010-02-25 H. C. Chiang , P. A. R. Ade , D. Barkats , J. O. Battle , E. M. Bierman , J. J. Bock , C. D. Dowell , L. Duband , E. F. Hivon , W. L. Holzapfel , V. V. Hristov , W. C. Jones , B. G. Keating , J. M. Kovac , C. L. Kuo , A. E. Lange , E. M. Leitch , P. V. Mason , T. Matsumura , H. T. Nguyen , N. Ponthieu , C. Pryke , S. Richter , G. Rocha , C. Sheehy , Y. D. Takahashi , J. E. Tolan , K. W. Yoon

Cosmic Microwave Background Polarisation: foreground contrast and component separation

We evaluate the expected level of foreground contamination to the cosmic microwave background (CMB) polarised radiation, focusing on the diffuse emission from our own Galaxy. In particular, we perform a first attempt to simulate an all sky…

Astrophysics · Physics 2015-06-24 Carlo Baccigalupi

Spectral Characterization of a 90 GHz CLASS Pixel

The Cosmology Large Angular Scale Surveyor (CLASS) is an experiment designed to measure the polarization of the cosmic microwave background on large angular scales to probe cosmic reionization and search for the inflationary $B$-mode…

Instrumentation and Methods for Astrophysics · Physics 2025-12-04 Gregory Jaehnig , John Appel , Sarah Marie Bruno , Jake Connors , Shannon M. Duff , Naina Gupta , Johannes Hubmayr , Matthew A. Koc , Tammy Lucas , Tobias Marriage , Lola Morales Perez , Caleigh Ryan , Jeff Van Lanen

Spectral distortion and polarization of the cosmic microwave background: Measurement, challenges and perspectives

The Cosmic Microwave Background (CMB) is a fundamental observational tool in modern cosmology. The linear polarization of the CMB provides a crucial observational tool for exploring new physics, including the inflationary paradigm and…

Cosmology and Nongalactic Astrophysics · Physics 2025-03-12 Vyoma Muralidhara

The Atacama Cosmology Telescope: Lensing of CMB Temperature and Polarization Derived from Cosmic Infrared Background Cross-Correlation

We present a measurement of the gravitational lensing of the Cosmic Microwave Background (CMB) temperature and polarization fields obtained by cross-correlating the reconstructed convergence signal from the first season of ACTPol data at…

Cosmology and Nongalactic Astrophysics · Physics 2015-08-06 Alexander van Engelen , Blake D. Sherwin , Neelima Sehgal , Graeme E. Addison , Rupert Allison , Nick Battaglia , Francesco de Bernardis , Erminia Calabrese , Kevin Coughlin , Devin Crichton , J. Richard Bond , Rahul Datta , Rolando Dunner , Joanna Dunkley , Emily Grace , Megan Gralla , Amir Hajian , Matthew Hasselfield , Shawn Henderson , J. Colin Hill , Matt Hilton , Adam D. Hincks , Renée Hlozek , Kevin M. Huffenberger , John P. Hughes , Brian Koopman , Arthur Kosowsky , Thibaut Louis , Marius Lungu , Mathew Madhavacheril , Loic Maurin , Jeff McMahon , Kavilan Moodley , Charles Munson , Sigurd Naess , Federico Nati , Laura Newburgh , Michael D. Niemack , Mike Nolta , Lyman A. Page , Bruce Partridge , Christine Pappas , Benjamin L. Schmitt , Jonathan L. Sievers , Sara Simon , David N. Spergel , Suzanne T. Staggs , Eric R. Switzer , Jonathan T. Ward , Edward J. Wollack

Measurement of the CMB Polarization at 95 GHz from QUIET

(Abridged) Despite the great success of precision cosmology, cosmologists cannot fully explain the initial conditions of the Universe. Inflation, an exponential expansion in the first 10^-36s, is a promising potential explanation. A generic…

Instrumentation and Methods for Astrophysics · Physics 2012-09-07 Immanuel Buder

Separation of foreground and background signals in single frequency measurements of the CMB Polarization

The polarization of the Cosmic Microwave Background (CMB)is a powerful observational tool at hand for modern cosmology. It allows to break the degeneracy of fundamental cosmological parameters one cannot obtain using only anisotropy data…

Astrophysics · Physics 2009-11-07 M. V. Sazhin , G. Sironi , O. S. Khovanskaya

Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum with the POLARBEAR experiment

Gravitational lensing due to the large-scale distribution of matter in the cosmos distorts the primordial Cosmic Microwave Background (CMB) and thereby induces new, small-scale $B$-mode polarization. This signal carries detailed information…

Cosmology and Nongalactic Astrophysics · Physics 2014-07-16 POLARBEAR Collaboration , P. A. R. Ade , Y. Akiba , A. E. Anthony , K. Arnold , M. Atlas , D. Barron , D. Boettger , J. Borrill , S. Chapman , Y. Chinone , M. Dobbs , T. Elleflot , J. Errard , G. Fabbian , C. Feng , D. Flanigan , A. Gilbert , W. Grainger , N. W. Halverson , M. Hasegawa , K. Hattori , M. Hazumi , W. L. Holzapfel , Y. Hori , J. Howard , P. Hyland , Y. Inoue , G. C. Jaehnig , A. Jaffe , B. Keating , Z. Kermish , R. Keskitalo , T. Kisner , M. Le Jeune , A. T. Lee , E. Linder , E. M. Leitch , M. Lungu , F. Matsuda , T. Matsumura , X. Meng , N. J. Miller , H. Morii , S. Moyerman , M. J. Myers , M. Navaroli , H. Nishino , H. Paar , J. Peloton , E. Quealy , G. Rebeiz , C. L. Reichardt , P. L. Richards , C. Ross , I. Schanning , D. E. Schenck , B. Sherwin , A. Shimizu , C. Shimmin , M. Shimon , P. Siritanasak , G. Smecher , H. Spieler , N. Stebor , B. Steinbach , R. Stompor , A. Suzuki , S. Takakura , T. Tomaru , B. Wilson , A. Yadav , O. Zahn

Sensitivity-Improved Polarization Maps at 40 GHz with CLASS and WMAP data

Improved polarization measurements at frequencies below 70 GHz with degree-level angular resolution are crucial for advancing our understanding of the Galactic synchrotron radiation and the potential polarized anomalous microwave emission…

Cosmology and Nongalactic Astrophysics · Physics 2024-08-06 Rui Shi , John W. Appel , Charles L. Bennett , Ricardo Bustos , David T. Chuss , Sumit Dahal , Jullianna Denes Couto , Joseph R. Eimer , Thomas Essinger-Hileman , Kathleen Harrington , Jeffrey Iuliano , Yunyang Li , Tobias A. Marriage , Matthew A. Petroff , Karwan Rostem , Zeya Song , Deniz A. N. Valle , Duncan J. Watts , Janet L. Weiland , Edward J. Wollack , Zhilei Xu

CMB polarization features from inflation versus reionization

The angular power spectrum of the cosmic microwave background temperature anisotropy observed by WMAP has an anomalous dip at l~20 and bump at l~40. One explanation for this structure is the presence of features in the primordial curvature…

Cosmology and Nongalactic Astrophysics · Physics 2009-05-19 Michael J. Mortonson , Cora Dvorkin , Hiranya V. Peiris , Wayne Hu

An improved upper limit to the CMB circular polarization at large angular scales

Circular polarization of the Cosmic Microwave Background (CMB) offers the possibility of detecting rotations of the universe and magnetic fields in the primeval universe or in distant clusters of galaxies. We used the Milano Polarimeter…

Cosmology and Nongalactic Astrophysics · Physics 2013-09-05 R. Mainini , D. Minelli , M. Gervasi , G. Boella , G. Sironi , A. Bau' , S. Banfi , A. Passerini , A. De Lucia , F. Cavaliere

A Limit on the Large Angular Scale Polarization of the Cosmic Microwave Background

We present an upper limit on the polarization of the Cosmic Microwave Background at 7 degree angular scales in the frequency band between 26 and 36 GHz, produced by the POLAR experiment. The campaign produced a map of linear polarization…

Astrophysics · Physics 2009-11-06 Brian G. Keating , Christopher W. O'Dell , Angelica de Oliveira-Costa , Slade Klawikowski , Nate Stebor , Lucio Piccirillo , Max Tegmark , Peter T. Timbie

Detecting the B-mode Polarisation of the CMB with Clover

We describe the objectives, design and predicted performance of Clover, which is a ground-based experiment to measure the faint ``B-mode'' polarisation pattern in the cosmic microwave background (CMB). To achieve this goal, clover will make…

Astrophysics · Physics 2008-06-03 C. E. North , B. R. Johnson , P. A. R. Ade , M. D. Audley , C. Baines , R. A. Battye , M. L. Brown , P. Cabella , P. G. Calisse , A. D. Challinor , W. D. Duncan , P. G. Ferreira , W. K. Gear , D. Glowacka , D. J. Goldie , P. K. Grimes , M. Halpern , V. Haynes , G. C. Hilton , K. D. Irwin , M. E. Jones , A. N. Lasenby , P. J. Leahy , J. Leech , B. Maffei , P. Mauskopf , S. J. Melhuish , D. O'Dea , S. M. Parsley , L. Piccirillo , G. Pisano , C. D. Reintsema , G. Savini , R. Sudiwala , D. Sutton , A. C. Taylor , G. Teleberg , D. Titterington , V. Tsaneva , C. Tucker , R. Watson , S. Withington , G. Yassin , J. Zhang

A Polarization Pursuers' Guide

We calculate the detectability of the polarization of the cosmic microwave background (CMB) as a function of the sky coverage, angular resolution, and instrumental sensitivity for a hypothetical experiment. We consider the gradient…

Astrophysics · Physics 2009-10-31 Andrew H. Jaffe , Marc Kamionkowski , Limin Wang

A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg$^2$ of SPTpol Temperature and Polarization Data

We present a measurement of the cosmic microwave background (CMB) lensing potential using 500 deg$^2$ of 150 GHz data from the SPTpol receiver on the South Pole Telescope. The lensing potential is reconstructed with signal-to-noise per mode…

Cosmology and Nongalactic Astrophysics · Physics 2019-10-23 W. L. K. Wu , L. M. Mocanu , P. A. R. Ade , A. J. Anderson , J. E. Austermann , J. S. Avva , J. A. Beall , A. N. Bender , B. A. Benson , F. Bianchini , L. E. Bleem , J. E. Carlstrom , C. L. Chang , H. C. Chiang , R. Citron , C. Corbett Moran , T. M. Crawford , A. T. Crites , T. de Haan , M. A. Dobbs , W. Everett , J. Gallicchio , E. M. George , A. Gilbert , N. Gupta , N. W. Halverson , N. Harrington , J. W. Henning , G. C. Hilton , G. P. Holder , W. L. Holzapfel , Z. Hou , J. D. Hrubes , N. Huang , J. Hubmayr , K. D. Irwin , L. Knox , A. T. Lee , D. Li , A. Lowitz , A. Manzotti , J. J. McMahon , S. S. Meyer , M. Millea , J. Montgomery , A. Nadolski , T. Natoli , J. P. Nibarger , G. I. Noble , V. Novosad , Y. Omori , S. Padin , S. Patil , C. Pryke , C. L. Reichardt , J. E. Ruhl , B. R. Saliwanchik , J. T. Sayre , K. K. Schaffer , C. Sievers , G. Simard , G. Smecher , A. A. Stark , K. T. Story , C. Tucker , K. Vanderlinde , T. Veach , J. D. Vieira , G. Wang , N. Whitehorn , V. Yefremenko

Improved Measurement of the Angular Power Spectrum of Temperature Anisotropy in the CMB from Two New Analyses of BOOMERANG Observations

We report the most complete analysis to date of observations of the Cosmic Microwave Background (CMB) obtained during the 1998 flight of BOOMERANG. We use two quite different methods to determine the angular power spectrum of the CMB in 20…

Astrophysics · Physics 2009-11-07 J. E. Ruhl , P. A. R. Ade , J. J. Bock , J. R. Bond , J. Borrill , A. Boscaleri , C. R. Contaldi , B. P. Crill , P. de Bernardis , G. De Troia , K. Ganga , M. Giacometti , E. Hivon , V. V. Hristov , A. Iacoangeli , A. H. Jaffe , W. C. Jones , A. E. Lange , S. Masi , P. Mason , P. D. Mauskopf , A. Melchiorri , T. Montroy , C. B. Netterfield , E. Pascale , F. Piacentini , D. Pogosyan , G. Polenta , S. Prunet , G. Romeo

After MAP: Next Generation CMB

We discuss several opportunities involving cosmic microwave background (CMB) observations during the post-MAP era. The curl-modes of CMB polarization allow a direct detection of inflationary gravitational waves and a measurement of the…

Astrophysics · Physics 2007-05-23 Asantha Cooray

CLASS Observations of Atmospheric Cloud Polarization at Millimeter Wavelengths

The dynamic atmosphere imposes challenges to ground-based cosmic microwave background observation, especially for measurements on large angular scales. The hydrometeors in the atmosphere, mostly in the form of clouds, scatter the ambient…

Instrumentation and Methods for Astrophysics · Physics 2023-09-15 Yunyang Li , John W. Appel , Charles L. Bennett , Ricardo Bustos , David T. Chuss , Joseph Cleary , Jullianna Denes Couto , Sumit Dahal , Rahul Datta , Rolando Dünner , Joseph R. Eimer , Thomas Essinger-Hileman , Kathleen Harrington , Jeffrey Iuliano , Tobias A. Marriage , Matthew A. Petroff , Rodrigo A. Reeves , Karwan Rostem , Rui Shi , Deniz A. N. Valle , Duncan J. Watts , Oliver F. Wolff , Edward J. Wollack , Zhilei Xu

The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and its Implications for Structure Growth

We present new measurements of cosmic microwave background (CMB) lensing over $9400$ sq. deg. of the sky. These lensing measurements are derived from the Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) CMB dataset, which consists of…

Cosmology and Nongalactic Astrophysics · Physics 2025-12-23 Frank J. Qu , Blake D. Sherwin , Mathew S. Madhavacheril , Dongwon Han , Kevin T. Crowley , Irene Abril-Cabezas , Peter A. R. Ade , Simone Aiola , Tommy Alford , Mandana Amiri , Stefania Amodeo , Rui An , Zachary Atkins , Jason E. Austermann , Nicholas Battaglia , Elia Stefano Battistelli , James A. Beall , Rachel Bean , Benjamin Beringue , Tanay Bhandarkar , Emily Biermann , Boris Bolliet , J Richard Bond , Hongbo Cai , Erminia Calabrese , Victoria Calafut , Valentina Capalbo , Felipe Carrero , Julien Carron , Anthony Challinor , Grace E. Chesmore , Hsiao-mei Cho , Steve K. Choi , Susan E. Clark , Rodrigo Córdova Rosado , Nicholas F. Cothard , Kevin Coughlin , William Coulton , Roohi Dalal , Omar Darwish , Mark J. Devlin , Simon Dicker , Peter Doze , Cody J. Duell , Shannon M. Duff , Adriaan J. Duivenvoorden , Jo Dunkley , Rolando Dünner , Valentina Fanfani , Max Fankhanel , Gerrit Farren , Simone Ferraro , Rodrigo Freundt , Brittany Fuzia , Patricio A. Gallardo , Xavier Garrido , Vera Gluscevic , Joseph E. Golec , Yilun Guan , Mark Halpern , Ian Harrison , Matthew Hasselfield , Erin Healy , Shawn Henderson , Brandon Hensley , Carlos Hervías-Caimapo , J. Colin Hill , Gene C. Hilton , Matt Hilton , Adam D. Hincks , Renée Hložek , Shuay-Pwu Patty Ho , Zachary B. Huber , Johannes Hubmayr , Kevin M. Huffenberger , John P. Hughes , Kent Irwin , Giovanni Isopi , Hidde T. Jense , Ben Keller , Joshua Kim , Kenda Knowles , Brian J. Koopman , Arthur Kosowsky , Darby Kramer , Aleksandra Kusiak , Adrien La Posta , Alex Lague , Victoria Lakey , Eunseong Lee , Zack Li , Yaqiong Li , Michele Limon , Martine Lokken , Thibaut Louis , Marius Lungu , Niall MacCrann , Amanda MacInnis , Diego Maldonado , Felipe Maldonado , Maya Mallaby-Kay , Gabriela A. Marques , Jeff McMahon , Yogesh Mehta , Felipe Menanteau , Kavilan Moodley , Thomas W. Morris , Tony Mroczkowski , Sigurd Naess , Toshiya Namikawa , Federico Nati , Laura Newburgh , Andrina Nicola , Michael D. Niemack , Michael R. Nolta , John Orlowski-Scherer , Lyman A. Page , Shivam Pandey , Bruce Partridge , Heather Prince , Roberto Puddu , Federico Radiconi , Naomi Robertson , Felipe Rojas , Tai Sakuma , Maria Salatino , Emmanuel Schaan , Benjamin L. Schmitt , Neelima Sehgal , Shabbir Shaikh , Carlos Sierra , Jon Sievers , Cristóbal Sifón , Sara Simon , Rita Sonka , David N. Spergel , Suzanne T. Staggs , Emilie Storer , Eric R. Switzer , Niklas Tampier , Robert Thornton , Hy Trac , Jesse Treu , Carole Tucker , Joel Ulluom , Leila R. Vale , Alexander Van Engelen , Jeff Van Lanen , Joshiwa van Marrewijk , Cristian Vargas , Eve M. Vavagiakis , Kasey Wagoner , Yuhan Wang , Lukas Wenzl , Edward J. Wollack , Zhilei Xu , Fernando Zago , Kaiwen Zhang

Second Season QUIET Observations: Measurements of the CMB Polarization Power Spectrum at 95 GHz

The Q/U Imaging ExperimenT (QUIET) has observed the cosmic microwave background (CMB) at 43 and 95GHz. The 43-GHz results have been published in QUIET Collaboration et al. (2011), and here we report the measurement of CMB polarization power…

Cosmology and Nongalactic Astrophysics · Physics 2013-02-01 QUIET Collaboration , D. Araujo , C. Bischoff , A. Brizius , I. Buder , Y. Chinone , K. Cleary , R. N. Dumoulin , A. Kusaka , R. Monsalve , S. K. Næss , L. B. Newburgh , R. Reeves , I. K. Wehus , J. T. L. Zwart , L. Bronfman , R. Bustos , S. E. Church , C. Dickinson , H. K. Eriksen , T. Gaier , J. O. Gundersen , M. Hasegawa , M. Hazumi , K. M. Huffenberger , K. Ishidoshiro , M. E. Jones , P. Kangaslahti , D. J. Kapner , D. Kubik , C. R. Lawrence , M. Limon , J. J. McMahon , A. D. Miller , M. Nagai , H. Nguyen , G. Nixon , T. J. Pearson , L. Piccirillo , S. J. E. Radford , A. C. S. Readhead , J. L. Richards , D. Samtleben , M. Seiffert , M. C. Shepherd , K. M. Smith , S. T. Staggs , O. Tajima , K. L. Thompson , K. Vanderlinde , R. Williamson