Enhancing Multiplet Alignment Measurements with Imaging
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909833140109312 |
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| author | Kumwembe, Alexus Annika Lamman, Claire Eisenstein, Daniel Aguilar, Jessica Nicole Ahlen, Steven Bianchi, Davide Brooks, David Claybaugh, Todd Cuceu, Andrei de la Macorra, Axel Dey, Biprateep Doel, Peter Font-Ribera, Andreu Forero-Romero, Jaime E. Gaztanaga, Enrique Gontcho, Satya Gontcho A Gutierrez, Gaston Ishak, Mustapha Jimenez, Jorge Joyce, Dick Kehoe, Robert Kisner, Theodore Lahav, Ofer Landriau, Martin Manera, Marc Miquel, Ramon Nadathur, Seshadri Palanque-Delabrouille, Nathalie Perez-Rafols, Ignasi Prada, Francisco Rossi, Graziano Sanchez, Eusebio Schlegel, David Seo, Hee-Jong Silber, Joseph Harry Sprayberry, David Tarle, Gregory Weaver, Benjamin Alan |
| author_facet | Kumwembe, Alexus Annika Lamman, Claire Eisenstein, Daniel Aguilar, Jessica Nicole Ahlen, Steven Bianchi, Davide Brooks, David Claybaugh, Todd Cuceu, Andrei de la Macorra, Axel Dey, Biprateep Doel, Peter Font-Ribera, Andreu Forero-Romero, Jaime E. Gaztanaga, Enrique Gontcho, Satya Gontcho A Gutierrez, Gaston Ishak, Mustapha Jimenez, Jorge Joyce, Dick Kehoe, Robert Kisner, Theodore Lahav, Ofer Landriau, Martin Manera, Marc Miquel, Ramon Nadathur, Seshadri Palanque-Delabrouille, Nathalie Perez-Rafols, Ignasi Prada, Francisco Rossi, Graziano Sanchez, Eusebio Schlegel, David Seo, Hee-Jong Silber, Joseph Harry Sprayberry, David Tarle, Gregory Weaver, Benjamin Alan |
| contents | We demonstrate that measurements of the gravitational tidal field made with spectroscopic redshifts can be improved with information from imaging surveys. The average orientation of small groups of galaxies, or "multiplets" is correlated with large-scale structure and is used to measure the direction of tidal forces. Previously, multiplet intrinsic alignment has been measured in DESI using galaxies that have spectroscopic redshifts. The DESI Legacy Imaging catalog can be used to supplement multiplet catalogs. Our findings show that galaxy positions from the imaging catalog produce a measurement similar to the measurements made with only spectroscopic data. This demonstrates that imaging can improve our signal-to-noise ratio for multiplet alignment in DESI. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_08353 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Enhancing Multiplet Alignment Measurements with Imaging Kumwembe, Alexus Annika Lamman, Claire Eisenstein, Daniel Aguilar, Jessica Nicole Ahlen, Steven Bianchi, Davide Brooks, David Claybaugh, Todd Cuceu, Andrei de la Macorra, Axel Dey, Biprateep Doel, Peter Font-Ribera, Andreu Forero-Romero, Jaime E. Gaztanaga, Enrique Gontcho, Satya Gontcho A Gutierrez, Gaston Ishak, Mustapha Jimenez, Jorge Joyce, Dick Kehoe, Robert Kisner, Theodore Lahav, Ofer Landriau, Martin Manera, Marc Miquel, Ramon Nadathur, Seshadri Palanque-Delabrouille, Nathalie Perez-Rafols, Ignasi Prada, Francisco Rossi, Graziano Sanchez, Eusebio Schlegel, David Seo, Hee-Jong Silber, Joseph Harry Sprayberry, David Tarle, Gregory Weaver, Benjamin Alan Cosmology and Nongalactic Astrophysics We demonstrate that measurements of the gravitational tidal field made with spectroscopic redshifts can be improved with information from imaging surveys. The average orientation of small groups of galaxies, or "multiplets" is correlated with large-scale structure and is used to measure the direction of tidal forces. Previously, multiplet intrinsic alignment has been measured in DESI using galaxies that have spectroscopic redshifts. The DESI Legacy Imaging catalog can be used to supplement multiplet catalogs. Our findings show that galaxy positions from the imaging catalog produce a measurement similar to the measurements made with only spectroscopic data. This demonstrates that imaging can improve our signal-to-noise ratio for multiplet alignment in DESI. |
| title | Enhancing Multiplet Alignment Measurements with Imaging |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2510.08353 |