Open Access

Physical Review Letters

, volume 127 , issue 15 , publication number 151301

Improved Constraints on Primordial Gravitational Waves using Planck , WMAP, and BICEP/ Keck Observations through the 2018 Observing Season

P. A. R. Ade

Z. Ahmed

M. Amiri

D. Barkats

R. Basu Thakur

Rohan Thakur

C. A. Bischoff

C. Bischoff

D. Beck

D. W. Beck

J. J. Bock

H. Boenish

E. Bullock

V. Buza

J. R. Cheshire

J. Connors

J. 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. N. Hall

G. Halal

M. Halpern

Mark Halpern

E. Hand

S. Harrison

S. I. HARRISON

S. Henderson

S. R. Hildebrandt

G. C. Hilton

Gene C. Hilton

J. Hubmayr

Johannes Hubmayr

H. Hui

K. D. Irwin

J. Kang

K. S. Karkare

Kirit 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

Hung D. Nguyen

R. O’Brient

R. W. Ogburn

A. Orlando

S. Palladino

T. Prouve

C. Pryke

B. Racine

C. D. Reintsema

C. Reintsema

S Richter[]

A. Schillaci

Alessandro Schillaci

R. Schwarz

B. L. Schmitt

B. Schmitt

C. D. Sheehy

A. Soliman

Ashraf T. Soliman

T. St. Germaine

B. Steinbach

R. V. Sudiwala

G. P. Teply

K. L. Thompson

J. E. Tolan

C. Tucker

Carole Tucker

A. D. Turner

C. Umilta

C. Umiltà

C. Vergès

A. G. Vieregg

A. Wandui

A. C. Weber

D. V. Wiebe

J. Willmert

C. L. Wong

Ching-Ping Wong

W. L. K. Wu

H. Yang

K. W. Yoon

E. Young

C. Yu

L. Zeng

C Zhang

S Zhang

Shaofei Zhang

Publication type: Journal Article

Publication date: 2021-10-04

American Physical Society (APS)

Physical Review Letters

scimago Q1

wos Q1

SJR: 2.856

CiteScore: 15.6

Impact factor: 9.0

ISSN: 00319007, 10797114

DOI: 10.1103/physrevlett.127.151301

Copy DOI

PubMed ID: 34678017

General Physics and Astronomy

Abstract

We present results from an analysis of all data taken by the BICEP2, Keck Array, and BICEP3 CMB polarization experiments up to and including the 2018 observing season. We add additional Keck Array observations at 220 GHz and BICEP3 observations at 95 GHz to the previous 95/150/220 GHz dataset. The Q/U maps now reach depths of 2.8, 2.8, and 8.8 μK_{CMB} arcmin at 95, 150, and 220 GHz, respectively, over an effective area of ≈600 square degrees at 95 GHz and ≈400 square degrees at 150 and 220 GHz. The 220 GHz maps now achieve a signal-to-noise ratio on polarized dust emission exceeding that of Planck at 353 GHz. We take auto- and cross-spectra between these maps and publicly available WMAP and Planck maps at frequencies from 23 to 353 GHz and evaluate the joint likelihood of the spectra versus a multicomponent model of lensed ΛCDM+r+dust+synchrotron+noise. The foreground model has seven parameters, and no longer requires a prior on the frequency spectral index of the dust emission taken from measurements on other regions of the sky. This model is an adequate description of the data at the current noise levels. The likelihood analysis yields the constraint r_{0.05}<0.036 at 95% confidence. Running maximum likelihood search on simulations we obtain unbiased results and find that σ(r)=0.009. These are the strongest constraints to date on primordial gravitational waves.

Found

7 citations

Vernov Sergey

80 publications, 1 884 citations, 43 reviews

h-index: 27

Lomonosov Moscow State University

Research interests

Cosmology

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Ade P. A. R. et al. Improved Constraints on Primordial Gravitational Waves using Planck , WMAP, and BICEP/ Keck Observations through the 2018 Observing Season // Physical Review Letters. 2021. Vol. 127. No. 15. 151301

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@article{2021_Ade,

author = {P. A. R. Ade and Z. Ahmed and M. Amiri and D. Barkats and R. Basu Thakur and Rohan Thakur and C. A. Bischoff and C. Bischoff and D. Beck and D. W. Beck and J. J. Bock and H. Boenish and E. Bullock and V. Buza and J. R. Cheshire and J. Connors and J. J. Connors and J. Cornelison and M. Crumrine and A. Cukierman and E. V. Denison and M. Dierickx and L. Duband and M. Eiben and S. Fatigoni and J. P. Filippini and S. Fliescher and N. Goeckner-Wald and D. C. Goldfinger and J. Grayson and P. Grimes and G. Hall and G. N. Hall and G. Halal and M. Halpern and Mark Halpern and E. Hand and S. Harrison and S. I. HARRISON and S. Henderson and S. R. Hildebrandt and G. C. Hilton and Gene C. Hilton and J. Hubmayr and Johannes Hubmayr and H. Hui and K. D. Irwin and J. Kang and K. S. Karkare and Kirit S. Karkare and others},

title = {Improved Constraints on Primordial Gravitational Waves using Planck , WMAP, and BICEP/ Keck Observations through the 2018 Observing Season},

journal = {Physical Review Letters},

year = {2021},

volume = {127},

publisher = {American Physical Society (APS)},

month = {oct},

url = {https://doi.org/10.1103/physrevlett.127.151301},

number = {15},

pages = {151301},

doi = {10.1103/physrevlett.127.151301}

}

Publisher

American Physical Society (APS)

Journal

Physical Review Letters

scimago Q1

wos Q1

SJR

2.856

CiteScore

15.6

Impact factor

9.0

ISSN

00319007 (Print)

10797114 (Electronic)

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