TDC II comprises 5 groups of datasets (Challenge 0 - 4), each targeting specific challenge topics. Except for Challenge 0 designed as illustrative examples for the access and use of TDC II, most of the remaining datasets are blind (i.e. the source parameters are unknown). Each dataset is stored in a separate HDF5 (.h5) file, which can be downloaded at The Zenodo Page of TDC II (please make sure to download the latest version). For Challenge 0 – 2, a TDI-combined and downsampled version can be downloaded at The Zenodo Page of TDC II-XYZ.
For the main challenges, a "training set" (parameters known) version is also provided to establish a rational difficulty progression. The training set data, as well as the codes and models which are helpful for the analysis can be downloaded at The Zenodo Page of TDC II Training Set. Please take a moment to read the manual therein.
• Challenge 0: the "Verification" Datasets
TDC II-0.1: verification Galactic binaries
TDC II-0.2: single massive black hole binary
• Challenge 1: the "Global Fit" Dataset
TDC II-1.1: multiple sources, shown in frequency domain (left) and time domain (right)
• Challenge 2: the "Single Source" Datasets
TDC II-2.1: Galactic binaries
TDC II-2.2: overlapping massive black hole binaries
TDC II-2.3: massive black hole binaries with eccentricity and higher harmonics, zoomed in around one of the mergers
TDC II-2.5: extreme mass-ratio inspiral, only one of TDC II-2.4/2.5/2.6/2.7 is shown as a representative case
TDC II-2.8: stochastic gravitational wave background
TDC II-2.9: stochastic gravitational wave background (another profile)
• Challenge 3: the "End-to-End" Dataset
TDC II-3.1: raw inter-spacecraft interferometer readouts
• Challenge 4: the "Up-to-Date" Dataset
TDC II-4.1: raw inter-spacecraft interferometer readouts, gap shown as a black vertical line