{"article_processing_charge":"No","intvolume":"        94","external_id":{"arxiv":["1609.03973"]},"publication_status":"published","abstract":[{"text":"We have investigated a recently proposed halo-based model, Camelus, for predicting weak-lensing peak counts, and compared its results over a collection of 162 cosmologies with those from N-body simulations. While counts from both models agree for peaks with S/N>1 (where S/N is the ratio of the peak height to the r.m.s. shape noise), we find ≈50% fewer counts for peaks near S/N=0 and significantly higher counts in the negative S/N tail. Adding shape noise reduces the differences to within 20% for all cosmologies. We also found larger covariances that are more sensitive to cosmological parameters. As a result, credibility regions in the {Ωm,σ8} are ≈30% larger. Even though the credible contours are commensurate, each model draws its predictive power from different types of peaks. Low peaks, especially those with 2<S/N<3, convey important cosmological information in N-body data, as shown in \\cite{DietrichHartlap, Kratochvil2010}, but \\textsc{Camelus} constrains cosmology almost exclusively from high significance peaks (S/N>3). Our results confirm the importance of using a cosmology-dependent covariance with at least a 14\\% improvement in parameter constraints. We identified the covariance estimation as the main driver behind differences in inference, and suggest possible ways to make Camelus even more useful as a highly accurate peak count emulator.","lang":"eng"}],"title":"Do dark matter halos explain lensing peaks?","_id":"17666","extern":"1","volume":94,"oa":1,"doi":"10.1103/physrevd.94.083506","year":"2016","publication":"Physical Review D","publication_identifier":{"issn":["2470-0010","2470-0029"]},"month":"10","scopus_import":"1","quality_controlled":"1","date_updated":"2024-09-25T07:49:17Z","citation":{"mla":"Zorrilla Matilla, José Manuel, et al. “Do Dark Matter Halos Explain Lensing Peaks?” <i>Physical Review D</i>, vol. 94, no. 8, 083506, American Physical Society, 2016, doi:<a href=\"https://doi.org/10.1103/physrevd.94.083506\">10.1103/physrevd.94.083506</a>.","ieee":"J. M. Zorrilla Matilla, Z. Haiman, D. Hsu, A. Gupta, and A. Petri, “Do dark matter halos explain lensing peaks?,” <i>Physical Review D</i>, vol. 94, no. 8. American Physical Society, 2016.","ista":"Zorrilla Matilla JM, Haiman Z, Hsu D, Gupta A, Petri A. 2016. Do dark matter halos explain lensing peaks? Physical Review D. 94(8), 083506.","apa":"Zorrilla Matilla, J. M., Haiman, Z., Hsu, D., Gupta, A., &#38; Petri, A. (2016). Do dark matter halos explain lensing peaks? <i>Physical Review D</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevd.94.083506\">https://doi.org/10.1103/physrevd.94.083506</a>","chicago":"Zorrilla Matilla, José Manuel, Zoltán Haiman, Daniel Hsu, Arushi Gupta, and Andrea Petri. “Do Dark Matter Halos Explain Lensing Peaks?” <i>Physical Review D</i>. American Physical Society, 2016. <a href=\"https://doi.org/10.1103/physrevd.94.083506\">https://doi.org/10.1103/physrevd.94.083506</a>.","ama":"Zorrilla Matilla JM, Haiman Z, Hsu D, Gupta A, Petri A. Do dark matter halos explain lensing peaks? <i>Physical Review D</i>. 2016;94(8). doi:<a href=\"https://doi.org/10.1103/physrevd.94.083506\">10.1103/physrevd.94.083506</a>","short":"J.M. Zorrilla Matilla, Z. Haiman, D. Hsu, A. Gupta, A. Petri, Physical Review D 94 (2016)."},"oa_version":"Preprint","article_number":"083506","publisher":"American Physical Society","type":"journal_article","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2024-09-06T07:44:28Z","author":[{"first_name":"José Manuel","full_name":"Zorrilla Matilla, José Manuel","last_name":"Zorrilla Matilla"},{"full_name":"Haiman, Zoltán","first_name":"Zoltán","last_name":"Haiman","id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36"},{"first_name":"Daniel","full_name":"Hsu, Daniel","last_name":"Hsu"},{"last_name":"Gupta","full_name":"Gupta, Arushi","first_name":"Arushi"},{"last_name":"Petri","full_name":"Petri, Andrea","first_name":"Andrea"}],"issue":"8","language":[{"iso":"eng"}],"date_published":"2016-10-04T00:00:00Z","article_type":"original","main_file_link":[{"url":" https://doi.org/10.48550/arXiv.1609.03973","open_access":"1"}],"status":"public","day":"04"}