{"year":"2022","scopus_import":"1","abstract":[{"lang":"eng","text":"Ongoing and planned weak lensing (WL) surveys are becoming deep enough to contain information on angular scales down to a few arcmin. To fully extract information from these small scales, we must capture non-Gaussian features in the cosmological WL signal while accurately accounting for baryonic effects. In this work, we account for baryonic physics via a baryonic correction model that modifies the matter distribution in dark matter-only N-body simulations, mimicking the effects of galaxy formation and feedback. We implement this model in a large suite of ray-tracing simulations, spanning a grid of cosmological models in Ωm−σ8 space. We then develop a convolutional neural network (CNN) architecture to learn and constrain cosmological and baryonic parameters simultaneously from the simulated WL convergence maps. We find that in a Hyper-Suprime Cam-like survey, our CNN achieves a 1.7× tighter constraint in Ωm−σ8 space (1σ area) than the power spectrum and 2.1× tighter than the peak counts, showing that the CNN can efficiently extract non-Gaussian cosmological information even while marginalizing over baryonic effects. When we combine our CNN with the power spectrum, the baryonic effects degrade the constraint in Ωm−σ8 space by a factor of 2.4, compared to the much worse degradation by a factor of 4.7 or 3.7 from either method alone."}],"_id":"17562","date_updated":"2024-09-18T12:41:52Z","article_processing_charge":"No","issue":"1","title":"Simultaneously constraining cosmology and baryonic physics via deep learning from weak lensing","status":"public","date_published":"2022-01-28T00:00:00Z","citation":{"ama":"Lu T, Haiman Z, Zorrilla Matilla JM. Simultaneously constraining cosmology and baryonic physics via deep learning from weak lensing. <i>Monthly Notices of the Royal Astronomical Society</i>. 2022;511(1):1518-1528. doi:<a href=\"https://doi.org/10.1093/mnras/stac161\">10.1093/mnras/stac161</a>","short":"T. Lu, Z. Haiman, J.M. Zorrilla Matilla, Monthly Notices of the Royal Astronomical Society 511 (2022) 1518–1528.","chicago":"Lu, Tianhuan, Zoltán Haiman, and José Manuel Zorrilla Matilla. “Simultaneously Constraining Cosmology and Baryonic Physics via Deep Learning from Weak Lensing.” <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press, 2022. <a href=\"https://doi.org/10.1093/mnras/stac161\">https://doi.org/10.1093/mnras/stac161</a>.","ista":"Lu T, Haiman Z, Zorrilla Matilla JM. 2022. Simultaneously constraining cosmology and baryonic physics via deep learning from weak lensing. Monthly Notices of the Royal Astronomical Society. 511(1), 1518–1528.","ieee":"T. Lu, Z. Haiman, and J. M. Zorrilla Matilla, “Simultaneously constraining cosmology and baryonic physics via deep learning from weak lensing,” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 511, no. 1. Oxford University Press, pp. 1518–1528, 2022.","apa":"Lu, T., Haiman, Z., &#38; Zorrilla Matilla, J. M. (2022). Simultaneously constraining cosmology and baryonic physics via deep learning from weak lensing. <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press. <a href=\"https://doi.org/10.1093/mnras/stac161\">https://doi.org/10.1093/mnras/stac161</a>","mla":"Lu, Tianhuan, et al. “Simultaneously Constraining Cosmology and Baryonic Physics via Deep Learning from Weak Lensing.” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 511, no. 1, Oxford University Press, 2022, pp. 1518–28, doi:<a href=\"https://doi.org/10.1093/mnras/stac161\">10.1093/mnras/stac161</a>."},"publication_status":"published","article_type":"original","month":"01","author":[{"first_name":"Tianhuan","last_name":"Lu","full_name":"Lu, Tianhuan"},{"first_name":"Zoltán","last_name":"Haiman","full_name":"Haiman, Zoltán","id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36"},{"full_name":"Zorrilla Matilla, José Manuel","first_name":"José Manuel","last_name":"Zorrilla Matilla"}],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["0035-8711","1365-2966"]},"quality_controlled":"1","oa":1,"page":"1518-1528","volume":511,"type":"journal_article","extern":"1","date_created":"2024-09-05T12:02:56Z","intvolume":"       511","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","oa_version":"Published Version","doi":"10.1093/mnras/stac161","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1093/mnras/stac161"}],"publisher":"Oxford University Press","publication":"Monthly Notices of the Royal Astronomical Society","day":"28"}