DOE OSTI · 2551809
The Spectroscopic Stage-5 Experiment
Abstract
The existence, properties, and dynamics of the dark sectors of our universe pose fundamental challenges to our current model of physics, and large-scale astronomical surveys may be our only hope to unravel these long-standing mysteries. In this white paper, we describe the science motivation, instrumentation, and survey plan for the next-generation spectroscopic observatory, the Stage-5 Spectroscopic Experiment (Spec-S5). Spec-S5 is a new all-sky spectroscopic instrument optimized to efficiently carry out cosmological surveys of unprecedented scale and precision. The baseline plan for Spec-S5 involves upgrading two existing 4-m telescopes to new 6-m wide-field facilities, each with a highly multiplexed spectroscopic instrument capable of simultaneously measuring the spectra of 13,000 astronomical targets. Spec-S5, which builds and improves on the hardware used for previous cosmology experiments, represents a cost-effective and rapid approach to realizing a more than 10$\times$ gain in spectroscopic capability compared to the current state-of-the-art represented by the Dark Energy Spectroscopic Instrument project (DESI). Spec-S5 will provide a critical scientific capability in the post-Rubin and post-DESI era for advancing cosmology, fundamental physics, and astrophysics in the 2030s.
Explore related subjects
Keep this discovery
Explore connections, maps & timelines
Besuner, Robert [LBL, Berkeley], Dey, Arjun [Natl. Solar Observ., Tucson], Drlica-Wagner, Alex [Fermilab; Chicago U., KICP; Chicago U., Astron. Astrophys. Ctr.] (ORCID:000000018251933X), Ebina, Haruki [UC, Berkeley], Fernandez Moroni, Guillermo [Fermilab] (ORCID:0000000342386813), Ferraro, Simone [LBL, Berkeley] (ORCID:0000000349927854), Forero-Romero, Jaime E. [Andes U., Bogota], Honscheid, Klaus [Ohio State U.], Jelinsky, Pat, Jelinsky, Patrick [UC, Berkeley, Space Sci. Dept.; LBL, Berkeley], Lang, Dustin A. [Perimeter Inst. Theor. Phys.], Levi, Michael [LBL, Berkeley], Martini, Paul [Ohio State U., Dept. Astron.], Myers, Adam [Wyoming U.], Palanque-Delabrouile, Nathalie [LBL, Berkeley], Panda, Swayamtrupta [Gemini Observ., La Serena], Poppett, Claire L. [UC, Berkeley, Space Sci. Dept.; LBL, Berkeley] (ORCID:0000000305125489), Noah, Sailer [UC, Berkeley], Schlegel, David J. [LBL, Berkeley], Shafieloo, Arman [KASI, DaeJeon], Silber, Joseph H. [LBL, Berkeley], White, Martin [UC, Berkeley], Abbot, Timothy M.C. [Gemini Observ., La Serena], Allen, Lori E. [Natl. Solar Observ., Tucson], Avila, Santiago [Madrid, CIEMAT], Avilés, Roberto, Bailey, Stephen [LBL, Berkeley], Bault, Abby [LBL, Berkeley], Bouri, Mohamed [Ecole Polytechnique, Lausanne], Boutsia, Konstantina [Gemini Observ., La Serena], Burtin, Etienne [IRFU, Saclay], Chierchie, F. [Buenos Aires, CONICET], Coulton, William [Cambridge U., DAMTP], Dawson, Kyle S. [Utah U.], Dey, Biprateep [U. Toronto (main)], Doré, Olivier, Dunlop, Patrick [Natl. Solar Observ., Tucson], Eisenstein, Daniel J. [Harvard-Smithsonian Ctr. Astrophys.], Castorina, Emanuele [Milan U.], Escoffier, Stephanie [Marseille, CPPM], Estrada, Juan [Fermilab] (ORCID:0000000215277956), Fagrelius, Parker [Natl. Solar Observ., Tucson], Fanning, Kevin [SLAC], Fanning, Timothy [Indiana U.], Font-Ribera, Andreu [Barcelona, IFAE], Frieman, Joshua A. [Chicago U., Astron. Astrophys. Ctr.], Galal, Malak [LPHE, Lausanne], Gluscevic, Vera [Southern California U.], Gontcho A. Gontcho, Satya [LBL, Berkeley], Green, Daniel [UC, San Diego], Gutierrez, Gaston [Fermilab] (ORCID:0000000308250517), Guy, Julien [LBL, Berkeley], Hashemi, Kevan [North Carolina State U.], Heathcote, Stephen [Gemini Observ., La Serena], Heathcote, Steve, Holland, Stephen E. [LBL, Berkeley] (ORCID:0000000172183457), Holland, Steve, Hou, Jiamin [Unlisted, DE], Huterer, Dragan [Michigan U.], Irigoyen Gimenez, Blas [Bahia Blanca, U. Natl. Del Sur], Ivanov, Mikhail M. [MIT, Cambridge, CTP] (ORCID:000000026745984X), Joyce, Richard [Natl. Solar Observ., Tucson], Jullo, Eric [Marseille, Lab. Astrophys.], Juneau, Stéphanie [Natl. Solar Observ., Tucson], Juramy, Claire [LPNHE, Paris], Karcher, Armin [LBL, Berkeley], Kent, Stephen [Fermilab], Kirkby, David [UC, Irvine], Kneib, Jean-Paul [LPHE, Lausanne], Krause, Elisabeth [Arizona U., Astron. Dept. - Steward Observ.], Krolewski, Alex [Waterloo U.], Lahav, Ofer [University Coll. London], Lapi, A. J. [Buenos Aires, CONICET], Leauthaud, Alexie [UC, Santa Cruz; UC, Santa Cruz, Inst. Part. Phys.], Lewandowski, Matthew [CERN], Newman, Jeffrey A. [Carnegie Mellon U.], Li, Ting S. [Toronto U., Astron. Dept.], Lin, Kenneth W. [LBL, Berkeley; UC, Berkeley, Astron. Dept.; LLNL, Livermore] (ORCID:0000000189672281), Loverde, Marilena [Washington U., Seattle], MacBride, Sean [Zurich U.], Magneville, Christophe [IRFU, Saclay], Marshall, Jennifer L. [Texas A-M], McDonald, Patrick [LBL, Berkeley], Miller, Timothy N. [UC, Berkeley, Space Sci. Dept.], Moustakas, John [Siena Coll., Loudonville], Münchmeyer, Moritz [Wisconsin U., Madison], Najita, Joan [Natl. Solar Observ., Tucson], Newman, Jeff, Percival, Will J. [Waterloo U.], Philcox, Oliver H.E. [Columbia U.; Flatiron Inst., New York; Stanford U., Phys. Dept.] (ORCID:0000000230339932), Pires, Priscila [Gemini Observ., La Serena], Raichoor, Anand [LBL, Berkeley], Roach, Brandon [Chicago U., KICP], Rockosi, Constance M. [UC, Santa Cruz; UC, Santa Cruz, Inst. Part. Phys.], Rombach, Maxime [LPHE, Lausanne], Ross, Ashley [Ohio State U.], Sanchez, Eusebio [Madrid, CIEMAT], Schmidt, L. M. [Australian Astron. Observ.], Schubnell, Michael [Michigan U.], Sebok, Rebekah A. [Michigan U.]. 2025-03-10. The Spectroscopic Stage-5 Experiment. https://doi.org/10.48550/arxiv.2503.07923
Cite the original work for its findings. Save a collection to share your selection of sources.