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Peter A. R. Ade, Zeeshan Ahmed, M. Amiri, D. Barkats, R. Basu Thakur, C. A. Bischoff, D. Beck, Jamie J. Bock, H. Boenish, E. Bullock and 81 more
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.
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Ade, P. A. R., Ahmed, Z., Amiri, M., Barkats, D., Thakur, R. B., Bischoff, C. A., Beck, D., Bock, J. J., Boenish, H., Bullock, E., Buza, V., Cheshire, J. R., Connors, J., Cornelison, J., Crumrine, M., Cukierman, A. J., Denison, E. V., Dierickx, M., Duband, L., … Zhang, S. (2021). Improved Constraints on Primordial Gravitational Waves using Planck , WMAP, and BICEP/ Keck Observations through the 2018 Observing Season. Physical Review Letters, 127(15), 151301. https://doi.org/10.1103/physrevlett.127.151301
Ade, Peter 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, vol. 127, no. 15, 2021, pp. 151301, https://doi.org/10.1103/physrevlett.127.151301.
Ade, Peter A. R., Zeeshan Ahmed, M. Amiri, D. Barkats, R. Basu Thakur, C. A. Bischoff, D. Beck, et al. "Improved Constraints on Primordial Gravitational Waves using Planck , WMAP, and BICEP/ Keck Observations through the 2018 Observing Season." Physical Review Letters 127, no. 15 (2021): 151301. https://doi.org/10.1103/physrevlett.127.151301.
Ade P. A. R., Ahmed Z., Amiri M. [и др.] Improved Constraints on Primordial Gravitational Waves using Planck , WMAP, and BICEP/ Keck Observations through the 2018 Observing Season // Physical Review Letters. — 2021. — Vol. 127, № 15. — P. 151301. — URL: https://doi.org/10.1103/physrevlett.127.151301
@article{ade2021improved,
title = {{Improved Constraints on Primordial Gravitational Waves using Planck , WMAP, and BICEP/ Keck Observations through the 2018 Observing Season}},
author = {Peter A. R. Ade and Zeeshan Ahmed and M. Amiri and D. Barkats and R. Basu Thakur and C. A. Bischoff and D. Beck and Jamie J. Bock and H. Boenish and E. Bullock and V. Buza and James R. Cheshire and J. Connors and J. Cornelison and M. Crumrine and Ari Jozef Cukierman and E. V. Denison and M. Dierickx and L. Duband and M. Eiben and S. Fatigoni and Jeff P. Filippini and S. Fliescher and N. Goeckner-Wald and D. C. Goldfinger and J. Grayson and Paul Grimes and G. Hall and George Halal and M. Halpern and E. Hand and S. Harrison and Shawn Henderson and Sergi R. Hildebrandt and G. C. Hilton and J. Hubmayr and H. Hui and K. D. Irwin and J. Kang and K. S. Karkare and E. Karpel and S. Kefeli and S. A. Kernasovskiy and John M. Kovac and Chao-Lin L. Kuo and K. Lau and Erik M. Leitch and A. Lennox and K. G. Megerian and L. Minutolo and L. Moncelsi and Yuka Nakato and Toshiya Namikawa and H. T. Nguyen and R. O’Brient and R. W. Ogburn and S. Palladino and Thomas Prouvé and Clement L. Pryke and B. Racine and C. D. Reintsema and S. Richter and A. Schillaci and R. Schwarz and B. L. Schmitt and C. D. Sheehy and A. Soliman and T. St. Germaine and B. Steinbach and Rashmi V. Sudiwala and G. P. Teply and Keith Louis Thompson and James E. Tolan and C. Tucker and A. D. Turner and C. Umiltà and C. Vergès and Abigail G. Vieregg and Albert K. Wandui and A. C. Weber and Don V. Wiebe and J. Willmert and C. L. Wong and W. L. K. Wu and Hung-I Yang and K. W. Yoon and E. Young and Cyndia Yu and Lingzhen Zeng and C. Zhang and S. Zhang},
journal = {Physical Review Letters},
year = {2021},
volume = {127},
number = {15},
pages = {151301},
doi = {10.1103/physrevlett.127.151301},
url = {https://doi.org/10.1103/physrevlett.127.151301}
}TY - JOUR AU - Ade, Peter A. R. AU - Ahmed, Zeeshan AU - Amiri, M. AU - Barkats, D. AU - Thakur, R. Basu AU - Bischoff, C. A. AU - Beck, D. AU - Bock, Jamie J. AU - Boenish, H. AU - Bullock, E. AU - Buza, V. AU - Cheshire, James R. AU - Connors, J. AU - Cornelison, J. AU - Crumrine, M. AU - Cukierman, Ari Jozef AU - Denison, E. V. AU - Dierickx, M. AU - Duband, L. AU - Eiben, M. AU - Fatigoni, S. AU - Filippini, Jeff P. AU - Fliescher, S. AU - Goeckner-Wald, N. AU - Goldfinger, D. C. AU - Grayson, J. AU - Grimes, Paul AU - Hall, G. AU - Halal, George AU - Halpern, M. AU - Hand, E. AU - Harrison, S. AU - Henderson, Shawn AU - Hildebrandt, Sergi R. AU - Hilton, G. C. AU - Hubmayr, J. AU - Hui, H. AU - Irwin, K. D. AU - Kang, J. AU - Karkare, K. S. AU - Karpel, E. AU - Kefeli, S. AU - Kernasovskiy, S. A. AU - Kovac, John M. AU - Kuo, Chao-Lin L. AU - Lau, K. AU - Leitch, Erik M. AU - Lennox, A. AU - Megerian, K. G. AU - Minutolo, L. AU - Moncelsi, L. AU - Nakato, Yuka AU - Namikawa, Toshiya AU - Nguyen, H. T. AU - O’Brient, R. AU - Ogburn, R. W. AU - Palladino, S. AU - Prouvé, Thomas AU - Pryke, Clement L. AU - Racine, B. AU - Reintsema, C. D. AU - Richter, S. AU - Schillaci, A. AU - Schwarz, R. AU - Schmitt, B. L. AU - Sheehy, C. D. AU - Soliman, A. AU - Germaine, T. St. AU - Steinbach, B. AU - Sudiwala, Rashmi V. AU - Teply, G. P. AU - Thompson, Keith Louis AU - Tolan, James E. AU - Tucker, C. AU - Turner, A. D. AU - Umiltà, C. AU - Vergès, C. AU - Vieregg, Abigail G. AU - Wandui, Albert K. AU - Weber, A. C. AU - Wiebe, Don V. AU - Willmert, J. AU - Wong, C. L. AU - Wu, W. L. K. AU - Yang, Hung-I AU - Yoon, K. W. AU - Young, E. AU - Yu, Cyndia AU - Zeng, Lingzhen AU - Zhang, C. AU - Zhang, S. TI - Improved Constraints on Primordial Gravitational Waves using Planck , WMAP, and BICEP/ Keck Observations through the 2018 Observing Season JO - Physical Review Letters VL - 127 IS - 15 SP - 151301 PY - 2021 DA - 2021/10/04 DO - 10.1103/physrevlett.127.151301 UR - https://doi.org/10.1103/physrevlett.127.151301 ER -
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