Accès ouvert déclaré
2026
article
The Simons Observatory: forecasted constraints on primordial gravitational waves with the expanded array of Small Aperture Telescopes
Irene Abril-Cabezas, S Adachi, P Ade, A.E Adler, P Agrawal, J Aguirre, S Aiola, T Alford, A Ali, D Alonso, MA Alvarez, R An, M Aravena, K Arnold, P Ashton, F Astori, Zachary Atkins, J Austermann, S. Azzoni, C Baccigalupi, D Baker, Rustam Balafendiev, A Baleato Lizancos, D Barron, P Barry, J Bartlett, A. Basyrov, N Battaglia, E Battistelli, Richard A. Battye, A Bayer, A. O. Bazarko, J.A Beall, R Bean, D Beck, S Beckman, J Begin, Ali Beheshti, Benjamin Beringue, Tanay Bhandarkar, S Bhimani, F Bianchini, E Biermann, M Billi, Simon Biquard, Bryce Bixler, L Bizzarri, S Boada, D Boettger, Boris Bolliet, J.R Bond, J Borrill, J Borrow, C Braithwaite, T.L.R Brien, M.L Brown, Savino Bruno, S Bryan, R Bustos, H Cai, E Calabrese, V Calafut, F.M Carl, A. Carones, J Carron, A Challinor, E Chamberlain, P Chanial, N Chen, K Cheung, Bryce Chiang, Y Chinone, J Chluba, H.S. Cho, S.K. Choi, M Chu, J Clancy, S.E Clark, P Clarke, J Cleary, Clements Dl, J Connors, Carlo Contaldi, Gabriele Coppi, L Corbett, N.F Cothard, W Coulton, D Crichton, K.D Crowley, K.T Crowley, A Cukierman, John D'Ewart, Nadia Dachlythra, O Darwish, R Datta, Samuel Day-Weiss, T de Haan, S Desai, M Devlin, L Di Mascolo, Simon Dicker, K Ding, C Doux, Peter N. Dow, S Doyle, C.J Duell, Shannon M. Duff, A.J Duivenvoorden, J Dunkley, Morgane Duparc, D. Dutcher, R Dünner, M. Edenton, H. El Bouhargani, C Embil Villagra, J Errard, G Fabbian, V Fanfani, F. Farhadi Khouzani, G.S Farren, J Fergusson, S Ferraro, Raphael Flauger, M Forconi, A Foster, Katherine Freese, J. C. Frisch, A Frolov, G Fuller, N Galitzki, Pedro A. Gallardo, G Galloni, J.T Galvez Ghersi, K Ganga, X. Garrido, Eric Gawiser, M Gerbino, Remington G. Gerras, S. Giardiello, A Gill, V Gilles, U Giri, E Gleave, Vera Gluscevic, N Goeckner-Wald, S Goldstein, J.E Golec, S Gordon, Megan Gralla, S Gratton, D Green, J.C Groh, C Groppi, S Grubb, Y Guan, N Gupta, J. E. Gudmundsson, Boryana Hadzhiyska, S Hagstotz, P Hargrave, S Haridas, K Harrington, I Harrison, M Hasegawa, M Hasselfield, V Haynes, M. Hazumi, A He, E Healy, SW Henderson, B.S Hensley, E Hertig, Carlos Hervías-Caimapo, M Higuchi, Hill Ca, J.C Hill, M Hilton, A.D Hincks, G. Hinshaw, R Hložek, A.Y.Q. Ho, S Ho, Ho Sp, T.D Hoang, Jonathan Hoh, J Holder, J Hood, Erika Hornecker, Al Hornsby, S.C Hotinli, Z Huang, Z.B Huber, J Hubmayr, K. M. Huffenberger, A Hughes, Hughes Jp, A Idicherian Lonappan, Margaret Ikape, K Inaba, K Irwin, Jeffrey Iuliano, A.H Jaffe, B Jain, D Jain, H.T Jense, O Jeong, A Johnson, B.R. Johnson, M Johnson, M. E. Jones, N Joshi, B Jost, Wassim Kabalan, V Kabra, D Kaneko, J Kania, E.D Karpel, Y Kasai, N Katayama, B Keating, B Keller, R Keskitalo, A.A Khatua, J Kim, T Kisner, K Kiuchi, K Knowles, A.M Kofman, Y Koizumi, Koopman Bj, Arthur Kosowsky, R Kou, N. Krachmalnicoff, D Kramer, A Krishak, A Krolewski, A Kusaka, A Kusiak, Y Kvasiuk, P La Plante, A La Posta, A Laguë, A Lai, J Lashner, M Lattanzi, A Lee, E Lee, John Leech, L Legrand, Claire S. Lessler, J.S Leung, A Lewis, Y Li, Z Li, M Limon, L Lin, E Linder, M Link, J Liu, Y Liu, J Lloyd, Jack Lonergan, Thibaut Louis, T Lucas, Mary J. C. Ludlam, M Lungu, M Lyons, N Maccrann, Amanda MacInnis, Mathew S. Madhavacheril, D Mak, F Maldonado, M Mallaby-Kay, Armando Manduca, André Mangu, H Mani, A.S Maniyar, G.A Marques, Ph. Masson, John A. B. Mates, J Mathewson, T Matsumura, P. Mauskopf, A May, N Mccallum, H Mccarrick, F Mccarthy, Michael McCrackan, M Mcculloch, J Mcmahon, P.D. Meerburg, Y Mehta, J Melin, E Meulbroek, J Meyers, A Middleton, Y Miki, A Miller, Mark Mirmelstein, Y Mizozoe, B Mohammadian, G Montefalcone, K Moodley, J Moore, T Morris, M Morshed, T Morton, E Moser, Tony Mroczkowski, M Murata, J Myers, Moritz Münchmeyer, S Naess, H Nakata, T Namikawa, M Nashimoto, F Nati, Paolo Natoli, M Negrello, S.K Nerval, L Newburgh, D.V Nguyen, Á. Gómez Nicola, M.D Niemack, H Nishino, Y Nishinomiya, A Novelli, S O'Neill, N Okumoto, A Orlando, John Orlowski-Scherer, L Pagano, L.A Page, S Pandey, A Papageorgiou, I Paraskevakos, B Partridge, D Patel, Raagini Patki, S. Paulino Korte, M Peel, K. Perez Sarmiento, F Perrotta, Phumlani Phakathi, L Piccirillo, E. Pierpaoli, Tristan Pinsonneault-Marotte, G Pisano, J Pitocco, D Poletti, Chad Popik, B Prasad, R Puddu, G Puglisi, F.J Qu, F Rahman, M.J Randall, Claudio Ranucci, C Raum, R Reeves, CL Reichardt, M. Remazeilles, X Ren, Yoel Rephaeli, D Riechers, Bernardita Ried Guachalla, A. Rizzieri, J Robe, M. Robertson, N Robertson, K Rogers, F Rojas, A Romero, E Rosenberg, A Rotti, S Rowe, A Roy, S Sadeh, Noah Sailer, Kana Sakaguri, T Sakuma, Y Sakurai, Maria Luiza Faria Salatino, G.H. Sanders, D Sasaki, M. Sathyanarayana Rao, T.P Satterthwaite, L.J Saunders, Lorenzo Scalcinati, Emmanuel Schaan, B Schmitt, Marcel Schmittfull, N Sehgal, J Seibert, Y Seino, U Seljak, S Shaikh, E Shaw, P Shellard, B Sherwin, Meir Shimon, J.E Shroyer, C Sierra, J Sievers, C Sifón, P Sikhosana, M Silva-Feaver, Simon Sm, A Sinclair, K Smith, Wuhyun Sohn, X Song, R.F Sonka, Thierry Souverin, J Spisak, S.T Staggs, G Stein, J.R Stevens, R Stompor, E Storer, R Sudiwala, Yoshinori Sueno, J Sugiyama, Pathi Suman, K.M Surrao, Shreya Sutariya, A Suzuki, J Suzuki, O. Tajima, R Takaku, S Takakura, A Takeuchi, I Tansieri, A.C Taylor, G Teply, T Terasaki, A Thomas, D. B. Thomas, R Thornton, P Timbie, H Trac, Tran Tsan, E. Tsang King Sang, C Tucker, J Ullom, L Vacher, L Vale, A van Engelen, J van Lanen, J van Marrewijk, Van Winkle, C Vargas, E.M Vavagiakis, Ian Veenendaal, C. Vergès, A. Villarrubia Aguilar, M Vissers, M. Viña, Kasey Wagoner, S Walker, L Walters, Y Wang, B Westbrook, J Williams, P Williams, J Wilson, Harrison Winch, EJ Wollack, K Wolz, J Wong, Z Xu, K Yamada, E Young, B Yu, C Yu, G Zagatti, M Zannoni, W Zhang, K Zheng, N Zhu, A Zonca, I Zubeldia, The Simons Observatory Collaboration
0Citations signalées, ce qui n’est pas une note de qualité
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Rattachement africain : fr.
Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
We present updated forecasts for the scientific performance of the degree-scale (0.5 deg FWHM at 93 GHz), deep-field survey to be conducted by the Simons Observatory (SO). By 2027, the SO Small Aperture Telescope (SAT) complement will be doubled from three to six telescopes, including a doubling of the detector count in the 93 GHz and 145 GHz channels to 48,160 detectors. Combined with a planned extension of the survey duration to 2035, this expansion will significantly enhance SO's search for a B-mode signal in the polarisation of the cosmic microwave background, a potential signature of gravitational waves produced in the very early Universe. Assuming a 1/f noise model with knee multipole ℓknee = 50 and a moderately complex model for Galactic foregrounds, we forecast a 1σ (or 68% confidence level) constraint on the tensor-to-scalar ratio r of σr = 1.2 × 10-3, assuming no primordial B-modes are present. This forecast assumes that 70% of the B-mode lensing signal can ultimately be removed using high resolution observations from the SO Large Aperture Telescope (LAT) and overlapping large-scale structure surveys. For more optimistic assumptions regarding foregrounds and noise, and assuming the same level of delensing, this forecast constraint improves to σr = 7 × 10-4. These forecasts represent a major improvement in SO's constraining power, being a factor of around 2.5 times better than what could be achieved with the originally planned campaign, which assumed the existing three SATs would conduct a five-year survey.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Les sujets associés
Pulsars and Gravitational Waves ResearchCosmology and Gravitation TheoriesGeophysics and Gravity Measurements