. SCUOLA INTERNAZIONALE SUPERIORE DI STUDI AVANZATI SISSA Digital Library The Simons Observatory: science goals and forecasts This is a pre print version of the following article: Original The Simons Observatory: science goals and forecasts / Ade, Peter; Aguirre, James; Ahmed, Zeeshan; Aiola, Simone; Ali, Aamir; Alonso, David; Alvarez, Marcelo A.; Arnold, Kam; Ashton, Peter; Austermann, Jason; Awan, Humna; Baccigalupi, Carlo; Baildon, Taylor; Barron, Darcy; Battaglia, Nick; Battye, Richard; Baxter, Eric; Bazarko, Andrew; Beall, James A.; Bean, Rachel; Beck, Dominic; Beckman, Shawn; Beringue, Benjamin; Bianchini, Federico; Boada, Steven; Boettger, David; Bond, J. Richard; Borrill, Julian; Brown, Michael L.; Bruno, Sarah Marie; Bryan, Sean; Calabrese, Erminia; Calafut, Victoria; Calisse, Paolo; Carron, Julien; Challinor, Anthony; Chesmore, Grace; Chinone, Yuji; Chluba, Availability: Jens; Cho, Hsiao-Mei Sherry; Choi, Steve; Coppi, Gabriele; Cothard, Nicholas F.; Coughlin, Kevin; Crichton, Devin; This version is available at: 20.500.11767/88543 since: 2019-03-29T12:46:46Z Crowley, Kevin D.; Crowley, Kevin T.; Cukierman, Ari; D'Ewart, John M.; Dünner, Rolando; De Haan, Tijmen; Devlin, Mark; Dicker, Simon; Didier, Joy; Dobbs, Matt; Dober, Bradley; Duell, Cody J.; Duff, Shannon; Duivenvoorden, Adri; Publisher: Dunkley, Jo; Dusatko, John; Errard, Josquin; Fabbian, Giulio; Feeney, Stephen; Ferraro, Simone; Fluxà, Pedro; Freese, Katherine; Frisch, Josef C.; Frolov, Andrei; Fuller, George; Fuzia, Brittany; Galitzki, Nicholas; Gallardo, Patricio A.; Ghersi, Jose Tomas Galvez; Gao, Jiansong; Gawiser, Eric; Gerbino, Martina; Gluscevic, Vera; Goeckner-Wald, Neil; Published Golec, Joseph; Gordon, Sam; Gralla, Megan; Green, Daniel; Grigorian, Arpi; Groh, John; Groppi, Chris; Guan, Yilun; DOI:10.1088/1475-7516/2019/02/056 Gudmundsson, Jon E.; Han, Dongwon; Hargrave, Peter; Hasegawa, Masaya; Hasselfield, Matthew; Hattori, Makoto; Haynes, Victor; Hazumi, Masashi; He, Yizhou; Healy, Erin; Henderson, Shawn W.; Hervias-Caimapo, Carlos; Hill, Charles A.; Hill, J. Colin; Hilton, Gene; Hilton, Matt; Hincks, Adam D.; Hinshaw, Gary; Hložek, Renée; Ho, Shirley; Ho, Shuay-Pwu Patty; Howe, Logan; Huang, Zhiqi; Hubmayr, Johannes; Huffenberger, Kevin; Hughes, John P.; Ijjas, Anna; TermsIkape, Margaret;of use: Irwin, Kent; Jaffe, Andrew H.; Jain, Bhuvnesh; Jeong, Oliver; Kaneko, Daisuke; Karpel, Ethan D.; openAccessKatayama, Nobuhiko; Keating, Brian; Kernasovskiy, Sarah S.; Keskitalo, Reijo; Kisner, Theodore; Kiuchi, Kenji; Klein, Jeff; Knowles, Kenda; Koopman, Brian; Kosowsky, Arthur; Krachmalnicoff, Nicoletta; Kuenstner, Stephen E.; Kuo, Chao- Lin;Testo Kusaka, definito Akito; dall’ateneo Lashner, relativo Jacob; alle Lee, clausole Adrian; di Lee,concessione Eunseong; d’uso Leon, David; Leung, Jason S. -Y.; Lewis, Antony; Li, Yaqiong; Li, Zack; Limon, Michele; Linder, Eric; Lopez-Caraballo, Carlos; Louis, Thibaut; Lowry, Lindsay; Lungu, Marius; Madhavacheril, Mathew; Mak, Daisy; Maldonado, Felipe; Mani, Hamdi; Mates, Ben; Matsuda, Frederick; Maurin, Loïc; Mauskopf, Phil; May, Andrew; Mccallum, Nialh; Mckenney, Chris; Mcmahon, Jeff; Meerburg, P. Daniel; Meyers, Joel; Miller, Amber; Mirmelstein, Mark; Moodley, Kavilan; Munchmeyer, Moritz; Munson, Charles; Naess, Sigurd; Nati, Federico;Publisher Navaroli,copyright Martin; Newburgh, Laura; Nguyen, Ho Nam; Niemack, Michael; Nishino, Haruki; Orlowski-Scherer, IOP-John; Institute Page, Lyman; of Physics Partridge, Bruce; Peloton, Julien; Perrotta, Francesca; Piccirillo, Lucio; Pisano, Giampaolo; Poletti, Davide; Puddu, Roberto; Puglisi, Giuseppe; Raum, Chris; Reichardt, Christian L.; Remazeilles, Mathieu; Rephaeli, Yoel; This version is available for education and non-commercial purposes. Riechers, Dominik; Rojas, Felipe; Roy, Anirban; Sadeh, Sharon; Sakurai, Yuki; Salatino, Maria; Rao, Mayuri Sathyanarayana; Schaan, Emmanuel; Schmittfull, Marcel; Sehgal, Neelima; Seibert, Joseph; Seljak, Uros; Sherwin, Blake; Shimon, Meir; Sierra, Carlos; Sievers, Jonathan; Sikhosana, Precious; Silva-Feaver, Maximiliano; Simon, Sara M.; Sinclair, Adrian; Siritanasak, Praween; Smith, Kendrick; Smith, Stephen R.; Spergel, David; Staggs, Suzanne T.; Stein, George; Stevens, Jason R.; Stompor, Radek; Suzuki, Aritoki; Tajima, Osamu; Takakura, Satoru; Teply, Grant; Thomas, Daniel B.; Thorne, Ben; Thornton, Robert; Trac, Hy; Tsai, Calvin; Tucker, Carole; Ullom, Joel; Vagnozzi, Sunny; Engelen, Alexander Van; Lanen, Jeff Van; Winkle,(Article Daniel begins D. Van;on next Vavagiakis, page) Eve M.; Vergès, Clara; Vissers, Michael; Wagoner, Kasey; Walker, Samantha; Ward, Jon; Westbrook, Ben; Whitehorn, Nathan; Williams, Jason; Williams, Joel; Wollack, Edward J.; Xu, Zhilei; Yu, Byeonghee; Yu, Cyndia; Zago, Fernando; Zhang, Hezi; Zhu, Ningfeng. - In: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. - ISSN 1475-7516. - 2019:2(2019), pp. 1-103. 09 March 2020 09 March 2020 Preprint typeset using LATEX style emulateapj v. 12/16/11 THE SIMONS OBSERVATORY: SCIENCE GOALS AND FORECASTS The Simons Observatory Collaboration:1 Peter Ade2, James Aguirre3, Zeeshan Ahmed4;5, Simone Aiola6;7, Aamir Ali8, David Alonso2;9, Marcelo A. Alvarez8;10, Kam Arnold11, Peter Ashton8;12;13, Jason Austermann14, Humna Awan15, Carlo Baccigalupi16;17, Taylor Baildon18, Darcy Barron8;19, Nick Battaglia20;7, Richard Battye21, Eric Baxter3, Andrew Bazarko6, James A. Beall14, Rachel Bean20, Dominic Beck22, Shawn Beckman8, Benjamin Beringue23, Federico Bianchini24, Steven Boada15, David Boettger25, J. Richard Bond26, Julian Borrill10;8, Michael L. Brown21, Sarah Marie Bruno6, Sean Bryan27, Erminia Calabrese2, Victoria Calafut20, Paolo Calisse11;25, Julien Carron28, Anthony Challinor29;23;30, Grace Chesmore18, Yuji Chinone8;13, Jens Chluba21, Hsiao-Mei Sherry Cho4;5, Steve Choi6, Gabriele Coppi3, Nicholas F. Cothard31, Kevin Coughlin18, Devin Crichton32, Kevin D. Crowley11, Kevin T. Crowley6, Ari Cukierman4;33;8, John M. D'Ewart5, Rolando Dunner¨ 25, Tijmen de Haan12;8, Mark Devlin3, Simon Dicker3, Joy Didier34, Matt Dobbs35, Bradley Dober14, Cody J. Duell36, Shannon Duff14, Adri Duivenvoorden37, Jo Dunkley6;38, John Dusatko5, Josquin Errard22, Giulio Fabbian39, Stephen Feeney7, Simone Ferraro40, Pedro Fluxa`25, Katherine Freese18;37, Josef C. Frisch4, Andrei Frolov41, George Fuller11, Brittany Fuzia42, Nicholas Galitzki11, Patricio A. Gallardo36, Jose Tomas Galvez Ghersi41, Jiansong Gao14, Eric Gawiser15, Martina Gerbino37, Vera Gluscevic43;6;44, Neil Goeckner-Wald8, Joseph Golec18, Sam Gordon45, Megan Gralla46, Daniel Green11, Arpi Grigorian14, John Groh8, Chris Groppi45, Yilun Guan47, Jon E. Gudmundsson37, Dongwon Han48, Peter Hargrave2, Masaya Hasegawa49, Matthew Hasselfield50;51, Makoto Hattori52, Victor Haynes21, Masashi Hazumi49;13, Yizhou He53, Erin Healy6, Shawn W. Henderson4;5, Carlos Hervias-Caimapo21, Charles A. Hill8;12, J. Colin Hill7;43, Gene Hilton14, Matt Hilton32, Adam D. Hincks54;26, Gary Hinshaw55, Renee´ Hloˇzek56;57, Shirley Ho12, Shuay-Pwu Patty Ho6, Logan Howe11, Zhiqi Huang58, Johannes Hubmayr14, Kevin Huffenberger42, John P. Hughes15, Anna Ijjas6, Margaret Ikape56;57, Kent Irwin4;33;5, Andrew H. Jaffe59, Bhuvnesh Jain3, Oliver Jeong8, Daisuke Kaneko13, Ethan D. Karpel4;33, Nobuhiko Katayama13, Brian Keating11, Sarah S. Kernasovskiy4;33, Reijo Keskitalo10;8, Theodore Kisner10;8, Kenji Kiuchi60, Jeff Klein3, Kenda Knowles32, Brian Koopman36, Arthur Kosowsky47, Nicoletta Krachmalnicoff16, Stephen E. Kuenstner4;33, Chao-Lin Kuo4;33;5, Akito Kusaka12;60, Jacob Lashner34, Adrian Lee8;12, Eunseong Lee21, David Leon11, Jason S.-Y. Leung56;57;26, Antony Lewis28, Yaqiong Li6, Zack Li38, Michele Limon3, Eric Linder12;8, Carlos Lopez-Caraballo25, Thibaut Louis61, Lindsay Lowry11, Marius Lungu6, Mathew Madhavacheril38, Daisy Mak59, Felipe Maldonado42, Hamdi Mani45, Ben Mates14, Frederick Matsuda13, Lo¨ıc Maurin25, Phil Mauskopf45, Andrew May21, Nialh McCallum21, Chris McKenney14, Jeff McMahon18, P. Daniel Meerburg29;23;30;62;63, Joel Meyers26;64, Amber Miller34, Mark Mirmelstein28, Kavilan Moodley32, Moritz Munchmeyer65, Charles Munson18, Sigurd Naess7, Federico Nati3, Martin Navaroli11, Laura Newburgh66, Ho Nam Nguyen48, Michael Niemack36, Haruki Nishino49, John Orlowski-Scherer3, Lyman Page6, Bruce Partridge67, Julien Peloton61;28, Francesca Perrotta16, Lucio Piccirillo21, Giampaolo Pisano2, Davide Poletti16, Roberto Puddu25, Giuseppe Puglisi4;33, Chris Raum8, Christian L. Reichardt24, Mathieu Remazeilles21, Yoel Rephaeli68, Dominik Riechers20, Felipe Rojas25, Anirban Roy16, Sharon Sadeh68, Yuki Sakurai13, Maria Salatino22, Mayuri Sathyanarayana Rao8;12, Emmanuel Schaan12, Marcel Schmittfull43, Neelima Sehgal48, Joseph Seibert11, Uros Seljak8;12, Blake Sherwin29;23, Meir Shimon68, Carlos Sierra18, Jonathan Sievers32, Precious Sikhosana32, Maximiliano Silva-Feaver11, Sara M. Simon18, Adrian Sinclair45, Praween Siritanasak11, Kendrick Smith65, Stephen R. Smith5, David Spergel7;38, Suzanne T. Staggs6, George Stein26;56, Jason R. Stevens36, Radek Stompor22, Aritoki Suzuki12, Osamu Tajima69, Satoru Takakura13, Grant Teply11, Daniel B. Thomas21, Ben Thorne38;9, Robert Thornton70, Hy Trac53, Calvin Tsai11, Carole Tucker2, Joel Ullom14, Sunny Vagnozzi37, Alexander van Engelen26, Jeff Van Lanen14, Daniel D. Van Winkle5, Eve M. Vavagiakis36, Clara Verges` 22, Michael Vissers14, Kasey Wagoner6, Samantha Walker14, Jon Ward3, Ben Westbrook8, Nathan Whitehorn71, Jason Williams34, Joel Williams21, Edward J. Wollack72, Zhilei Xu3, Byeonghee Yu8, Cyndia Yu4;33, Fernando Zago47,