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DECADE+DES Y3 Weak Lensing Mass Map: A 13,000 deg$^2$ View of Cosmic Structure from 270 Million Galaxies

Fuente: arXiv

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Bibliographic Details
Main Authors:	Gatti, M., Anbajagane, D., Chang, C., Bacon, D. J., Prat, J., Adamow, M., Alarcon, A., Becker, M. R., Carballo-Bello, J. A., Chicoine, N., Doux, C., Drlica-Wagner, A., Ferguson, P. S., Gruen, D., Gruendl, R. A., Herron, K., Jeffrey, N., James, D. J., Kovács, A., Martínez-Vázquez, C. E., Massana, P., Mau, S., McCullough, J., Medina, G. E., Mutlu-Pakdil, B., Noël, N. E. D., Pace, A. B., Pollina, G., Riley, A. H., Sand, D. J., Secco, L. F., Stringfellow, G. S., Suson, D., Tan, C. Y., Teixeira, R., Tollerud, E. J., Troxel, M. A., Whiteway, L., Zenteno, A., Zhang, Z.
Format:	Preprint
Published:	2025
Subjects:	Cosmology and Nongalactic Astrophysics
Online Access:	Acceder al recurso
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_version_	1866911138173681664
author	Gatti, M. Anbajagane, D. Chang, C. Bacon, D. J. Prat, J. Adamow, M. Alarcon, A. Becker, M. R. Carballo-Bello, J. A. Chicoine, N. Doux, C. Drlica-Wagner, A. Ferguson, P. S. Gruen, D. Gruendl, R. A. Herron, K. Jeffrey, N. James, D. J. Kovács, A. Martínez-Vázquez, C. E. Massana, P. Mau, S. McCullough, J. Medina, G. E. Mutlu-Pakdil, B. Noël, N. E. D. Pace, A. B. Pollina, G. Riley, A. H. Sand, D. J. Secco, L. F. Stringfellow, G. S. Suson, D. Tan, C. Y. Teixeira, R. Tollerud, E. J. Troxel, M. A. Whiteway, L. Zenteno, A. Zhang, Z.
author_facet	Gatti, M. Anbajagane, D. Chang, C. Bacon, D. J. Prat, J. Adamow, M. Alarcon, A. Becker, M. R. Carballo-Bello, J. A. Chicoine, N. Doux, C. Drlica-Wagner, A. Ferguson, P. S. Gruen, D. Gruendl, R. A. Herron, K. Jeffrey, N. James, D. J. Kovács, A. Martínez-Vázquez, C. E. Massana, P. Mau, S. McCullough, J. Medina, G. E. Mutlu-Pakdil, B. Noël, N. E. D. Pace, A. B. Pollina, G. Riley, A. H. Sand, D. J. Secco, L. F. Stringfellow, G. S. Suson, D. Tan, C. Y. Teixeira, R. Tollerud, E. J. Troxel, M. A. Whiteway, L. Zenteno, A. Zhang, Z.
contents	We present the largest galaxy weak lensing mass map of the late-time Universe, reconstructed from 270 million galaxies in the DECADE and DES Year 3 datasets, covering 13,000 square degrees. We validate the map through systematic tests against observational conditions (depth, seeing, etc.), finding the map is statistically consistent with no contamination. The large area covered by the mass map makes it a well-suited tool for cosmological analyses, cross-correlation studies and the identification of large-scale structure features. We demonstrate its potential by detecting cosmic filaments directly from the mass map for the first time and validating them through their association with galaxy clusters selected using the Sunyaev-Zeldovich effect from Planck and ACT DR6.
format	Preprint
id	arxiv_https___arxiv_org_abs_2509_03798
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	DECADE+DES Y3 Weak Lensing Mass Map: A 13,000 deg$^2$ View of Cosmic Structure from 270 Million Galaxies Gatti, M. Anbajagane, D. Chang, C. Bacon, D. J. Prat, J. Adamow, M. Alarcon, A. Becker, M. R. Carballo-Bello, J. A. Chicoine, N. Doux, C. Drlica-Wagner, A. Ferguson, P. S. Gruen, D. Gruendl, R. A. Herron, K. Jeffrey, N. James, D. J. Kovács, A. Martínez-Vázquez, C. E. Massana, P. Mau, S. McCullough, J. Medina, G. E. Mutlu-Pakdil, B. Noël, N. E. D. Pace, A. B. Pollina, G. Riley, A. H. Sand, D. J. Secco, L. F. Stringfellow, G. S. Suson, D. Tan, C. Y. Teixeira, R. Tollerud, E. J. Troxel, M. A. Whiteway, L. Zenteno, A. Zhang, Z. Cosmology and Nongalactic Astrophysics We present the largest galaxy weak lensing mass map of the late-time Universe, reconstructed from 270 million galaxies in the DECADE and DES Year 3 datasets, covering 13,000 square degrees. We validate the map through systematic tests against observational conditions (depth, seeing, etc.), finding the map is statistically consistent with no contamination. The large area covered by the mass map makes it a well-suited tool for cosmological analyses, cross-correlation studies and the identification of large-scale structure features. We demonstrate its potential by detecting cosmic filaments directly from the mass map for the first time and validating them through their association with galaxy clusters selected using the Sunyaev-Zeldovich effect from Planck and ACT DR6.
title	DECADE+DES Y3 Weak Lensing Mass Map: A 13,000 deg$^2$ View of Cosmic Structure from 270 Million Galaxies
topic	Cosmology and Nongalactic Astrophysics
url	https://arxiv.org/abs/2509.03798