{ "_id": "6a5c889d9baadeef8ab513bc", "Package": "timedelay", "Version": "1.0.11", "Date": "2020-05-18", "Title": "Time Delay Estimation for Stochastic Time Series of\nGravitationally Lensed Quasars", "Author": "Hyungsuk Tak, Kaisey Mandel, David A. van Dyk, Vinay L.\nKashyap, Xiao-Li Meng, Aneta Siemiginowska, and Zhirui Hu", "Maintainer": "Hyungsuk Tak ", "Description": "We provide a toolbox to estimate the time delay between\nthe brightness time series of gravitationally lensed quasar\nimages via Bayesian and profile likelihood approaches. The\nmodel is based on a state-space representation for irregularly\nobserved time series data generated from a latent\ncontinuous-time Ornstein-Uhlenbeck process. Our Bayesian method\nadopts scientifically motivated hyper-prior distributions and a\nMetropolis-Hastings within Gibbs sampler, producing posterior\nsamples of the model parameters that include the time delay. A\nprofile likelihood of the time delay is a simple approximation\nto the marginal posterior distribution of the time delay. Both\nBayesian and profile likelihood approaches complement each\nother, producing almost identical results; the Bayesian way is\nmore principled but the profile likelihood is easier to\nimplement. A new functionality is added in version 1.0.9 for\nestimating the time delay between doubly-lensed light curves\nobserved in two bands. See also Tak et al. (2017)\n, Tak et al. (2018)\n, Hu and Tak (2020)\n.", "License": "GPL-2", "Encoding": "UTF-8", "NeedsCompilation": "no", "Packaged": { "Date": "2026-07-19 08:16:26 UTC", "User": "root" }, "Repository": "https://hyungsuktak.r-universe.dev", "Date/Publication": "2020-05-19 10:50:02 UTC", "RemoteUrl": "https://github.com/cran/timedelay", "RemoteRef": "HEAD", "RemoteSha": "9a87917b580e40ab2085d3178561da55248a97a0", "_user": "hyungsuktak", "_type": "src", "_file": "timedelay_1.0.11.tar.gz", "_fileid": "https://r2.ropensci.org/f833319e198a34bd4e2baf1ae033bcf8433cee0bdba8ba62db3cace136002bcb", "_filesize": 198373, "_sha256": "f833319e198a34bd4e2baf1ae033bcf8433cee0bdba8ba62db3cace136002bcb", "_expires": "2026-10-27T08:19:38.000Z", "_created": "2026-07-19T08:16:26.000Z", "_published": "2026-07-19T08:19:41.017Z", "_jobs": [ { "job": 88173084290, "time": 106, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "8440110989" }, { "job": 88173084267, "time": 152, "config": "linux-release-x86_64", 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