Zobrazeno 1 - 10
of 2 500
pro vyhledávání: '"Dark, P"'
Autor:
Zeghal, Justine, Lanzieri, Denise, Lanusse, François, Boucaud, Alexandre, Louppe, Gilles, Aubourg, Eric, Bayer, Adrian E., Collaboration, The LSST Dark Energy Science
Standard cosmological analysis, which relies on two-point statistics, fails to extract the full information of the data. This limits our ability to constrain with precision cosmological parameters. Thus, recent years have seen a paradigm shift from a
Externí odkaz:
http://arxiv.org/abs/2409.17975
Autor:
Awan, Humna, Gawiser, Eric, Sanchez, Javier, Sevilla-Noarbe, Ignacio, Collaboration, the LSST Dark Energy Science
Large near-future galaxy surveys offer sufficient statistical power to make our cosmology analyses data-driven, limited primarily by systematic errors. Understanding the impact of systematics is therefore critical. We perform an end-to-end analysis t
Externí odkaz:
http://arxiv.org/abs/2409.14265
Dark Energy Survey: 2.1% measurement of the Baryon Acoustic Oscillation scale from the final dataset
Here, we present the angular diameter distance measurement obtained from the measurement of the Baryonic Acoustic Oscillation (BAO) feature using the completed Dark Energy Survey (DES) data, summarizing the main results of [Phys. Rev. D 110, 063514]
Externí odkaz:
http://arxiv.org/abs/2409.08759
Autor:
Mendoza, Ismael, Torchylo, Andrii, Sainrat, Thomas, Guinot, Axel, Boucaud, Alexandre, Paillassa, Maxime, Avestruz, Camille, Adari, Prakruth, Aubourg, Eric, Biswas, Biswajit, Buchanan, James, Burchat, Patricia, Doux, Cyrille, Joseph, Remy, Kamath, Sowmya, Malz, Alex I., Merz, Grant, Miyatake, Hironao, Roucelle, Cécile, Zhang, Tianqing, Collaboration, the LSST Dark Energy Science
We present an open source Python library for simulating overlapping (i.e., blended) images of galaxies and performing self-consistent comparisons of detection and deblending algorithms based on a suite of metrics. The package, named Blending Toolkit
Externí odkaz:
http://arxiv.org/abs/2409.06986
Autor:
Grishin, Kirill, Mei, Simona, Ilic, Stephane, Aguena, Michel, Boutigny, Dominique, Paturel, Marie, Collaboration, the LSST Dark Energy Science
LSST will provide galaxy cluster catalogs up to z$\sim$1 that can be used to constrain cosmological models once their selection function is well-understood. We have applied the deep convolutional network YOLO for CLuster detection (YOLO-CL) to LSST s
Externí odkaz:
http://arxiv.org/abs/2409.03333
Autor:
Hang, Qianjun, Joachimi, Benjamin, Charles, Eric, Crenshaw, John Franklin, Larsen, Patricia, Malz, Alex I., Schmidt, Sam, Yan, Ziang, Zhang, Tianqing, Collaboration, the LSST Dark Energy Science
We investigate the impact of spatial survey non-uniformity on the galaxy redshift distributions for forthcoming data releases of the Rubin Observatory Legacy Survey of Space and Time (LSST). Specifically, we construct a mock photometry dataset degrad
Externí odkaz:
http://arxiv.org/abs/2409.02501
Autor:
Arvizu, Abraham, Aviles, Alejandro, Hidalgo, Juan Carlos, Moreno, Eladio, Niz, Gustavo, Rodriguez-Meza, Mario A., Samario, Sofía, Collaboration, The LSST Dark Energy Science
One of the main obstacles for the signal extraction of the three point correlation function using photometric surveys, such as the Rubin Observatory Legacy Survey of Space and Time (LSST), will be the prohibitive computation time required for dealing
Externí odkaz:
http://arxiv.org/abs/2408.16847
Autor:
Biswas, Biswajit, Aubourg, Eric, Boucaud, Alexandre, Guinot, Axel, Lao, Junpeng, Roucelle, Cécile, Collaboration, the LSST Dark Energy Science
Due to the unprecedented depth of the upcoming ground-based Legacy Survey of Space and Time (LSST) at the Vera C. Rubin Observatory, approximately two-thirds of the galaxies are likely to be affected by blending - the overlap of physically separated
Externí odkaz:
http://arxiv.org/abs/2408.15236
Noise bias is a significant source of systematic error in weak gravitational lensing measurements that must be corrected to satisfy the stringent standards of modern imaging surveys in the era of precision cosmology. This paper reviews the analytical
Externí odkaz:
http://arxiv.org/abs/2408.06337
Autor:
Armstrong, Robert, Sheldon, Erin, Huff, Eric, Bosch, Jim, Rykoff, Eli, Mandelbaum, Rachel, Kannawadi, Arun, Melchior, Peter, Lupton, Robert, Becker, Matthew R., Al-Sayyed, Yusra, Collaboration, The LSST Dark Energy Science
Upcoming wide field surveys will have many overlapping epochs of the same region of sky. The conventional wisdom is that in order to reduce the errors sufficiently for systematics-limited measurements, like weak lensing, we must do simultaneous fitti
Externí odkaz:
http://arxiv.org/abs/2407.01771