AtLAST -- A five fold increase in the number of identified Strongly Lensed Galaxies in the sub-millimetre and its consequences

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Main Authors: González-Nuevo, Joaquín, Bonavera, Laura, Cano, Juan Alberto, Crespo, David, Fernández-Fernández, Rebeca, Franco, Valentina, Cueli, Marcos M., Casas, José Manuel, Bakx, Tom J. L. C.
Format: Preprint
Published: 2025
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author González-Nuevo, Joaquín
Bonavera, Laura
Cano, Juan Alberto
Crespo, David
Fernández-Fernández, Rebeca
Franco, Valentina
Cueli, Marcos M.
Casas, José Manuel
Bakx, Tom J. L. C.
author_facet González-Nuevo, Joaquín
Bonavera, Laura
Cano, Juan Alberto
Crespo, David
Fernández-Fernández, Rebeca
Franco, Valentina
Cueli, Marcos M.
Casas, José Manuel
Bakx, Tom J. L. C.
contents Strong gravitational lensing is a powerful probe of cosmology, dark matter (DM), and high-redshift galaxy evolution, but current samples of strongly lensed galaxies (SLGs) remain far too small to exploit its full potential. $\textit{Herschel}$'s submillimeter (submm) surveys demonstrated that submm selection provides the most efficient and least biased route to identifying high-redshift SLGs, yet produced only a few hundred systems over limited, heterogeneous fields. Achieving the thousands of SLGs required for precision cosmology and detailed studies of distant dusty star-forming galaxies demands a new, wide-area, homogeneous sub-mm survey. A facility like AtLAST, capable of extending $\textit{Herschel}$-like methodologies to much larger areas, is uniquely positioned to deliver the order-of-magnitude increase in SLG numbers needed for transformative progress.
format Preprint
id arxiv_https___arxiv_org_abs_2512_13896
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle AtLAST -- A five fold increase in the number of identified Strongly Lensed Galaxies in the sub-millimetre and its consequences
González-Nuevo, Joaquín
Bonavera, Laura
Cano, Juan Alberto
Crespo, David
Fernández-Fernández, Rebeca
Franco, Valentina
Cueli, Marcos M.
Casas, José Manuel
Bakx, Tom J. L. C.
Astrophysics of Galaxies
Cosmology and Nongalactic Astrophysics
Strong gravitational lensing is a powerful probe of cosmology, dark matter (DM), and high-redshift galaxy evolution, but current samples of strongly lensed galaxies (SLGs) remain far too small to exploit its full potential. $\textit{Herschel}$'s submillimeter (submm) surveys demonstrated that submm selection provides the most efficient and least biased route to identifying high-redshift SLGs, yet produced only a few hundred systems over limited, heterogeneous fields. Achieving the thousands of SLGs required for precision cosmology and detailed studies of distant dusty star-forming galaxies demands a new, wide-area, homogeneous sub-mm survey. A facility like AtLAST, capable of extending $\textit{Herschel}$-like methodologies to much larger areas, is uniquely positioned to deliver the order-of-magnitude increase in SLG numbers needed for transformative progress.
title AtLAST -- A five fold increase in the number of identified Strongly Lensed Galaxies in the sub-millimetre and its consequences
topic Astrophysics of Galaxies
Cosmology and Nongalactic Astrophysics
url https://arxiv.org/abs/2512.13896