Abstract
We search Dark Energy Survey (DES) Year 3 imaging for galaxy-galaxy strong gravitational lenses using convolutional neural networks, extending previous work with new training sets and covering a wider range of redshifts and colors. We train two neural networks using images of simulated lenses, then use them to score postage-stamp images of 7.9 million sources from DES chosen to have plausible lens colors based on simulations. We examine 1175 of the highest-scored candidates and identify 152 probable or definite lenses. Examining an additional 20,000 images with lower scores, we identify a further 247 probable or definite candidates. After including 86 candidates discovered in earlier searches using neural networks and 26 candidates discovered through visual inspection of blue-near-red objects in the DES catalog, we present a catalog of 511 lens candidates.
Original language | English (US) |
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Article number | 17 |
Journal | Astrophysical Journal, Supplement Series |
Volume | 243 |
Issue number | 1 |
DOIs | |
State | Published - 2019 |
Keywords
- gravitational lensing: strong
- methods: data analysis
- methods: statistical
- surveys
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
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Strong DES lens candidates from neural networks
Jacobs, C. (Creator), Collett, T. (Creator), Glazebrook, K. (Creator), Buckley-Geer, E. (Creator), Diehl, H. T. (Creator), Lin, H. (Creator), McCarthy, C. (Creator), Qin, A. K. (Creator), Odden, C. (Creator), Escudero, M. C. (Creator), Dial, P. (Creator), Yung, V. J. (Creator), Gaitsch, S. (Creator), Pellico, A. (Creator), Lindgren, K. A. (Creator), Abbott, T. M. C. (Contributor), Annis, J. (Creator), Avila, S. (Creator), Brooks, D. (Creator), Burke, D. L. (Creator), Rosell, A. C. (Creator), Kind, M. C. (Creator), Carretero, J. (Creator), Costa, L. N. D. (Contributor), Vicente, J. D. (Contributor), Fosalba, P. (Creator), Frieman, J. (Creator), Garcia-Bellido, J. (Contributor), Gaztanaga, E. (Creator), Goldstein, D. A. (Creator), Gruen, D. (Creator), Gruendl, R. A. (Creator), Gschwend, J. (Creator), Hollowood, D. L. (Creator), Honscheid, K. (Creator), Hoyle, B. (Creator), James, D. J. (Creator), Krause, E. (Creator), Kuropatkin, N. (Creator), Lahav, O. (Creator), Lima, M. (Creator), Maia, M. A. G. (Contributor), Marshall, J. L. (Creator), Miquel, R. (Creator), Plazas, A. A. (Creator), Roodman, A. (Creator), Sanchez, E. (Creator), Scarpine, V. (Creator), Serrano, S. (Creator), Sevilla-Noarbe, I. (Creator), Smith, M. (Creator), Sobreira, F. (Creator), Suchyta, E. (Creator), Swanson, M. E. C. (Contributor), Tarle, G. (Creator), Vikram, V. (Creator), Walker, A. R. (Creator) & Zhang, Y. (Creator), Centre de Donnees Strasbourg (CDS), 2020
DOI: 10.26093/cds/vizier.22430017, https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/243/17
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