I noticed that NDS has a sample use case and it seemed like it would be of interest to keep as part of our collection of use cases. Note that it cites among other things the Virtual Observatory which was also discussed at our BoF session at P4. Robert Pennington of NCAS may have more to say about this exampe since NDS is under him...
Using the NDS: a scenario
To illustrate how a scientist might use the NDS, consider this scenario for astronomy research which we think can be realized:
In 2021 the LIGO gravitational wave observatory detects a strong “transient” burst event with an unknown source; an alert is issued. Across the US, physicists and astronomers (who have never worked directly together) engage NDS discovery services to find relevant data from other instruments, leading them to detections from the IceCube neutrino observatory, further isolating the originating portion of the sky. NDS discovery services connect the researchers to the federated discovery tools of the Virtual Observatory to collect data by sky position from large surveys like DES and LSST to look for electromagnetic precursors. Through literature searches, they find publications describing characteristics of similar detections; recent publications and an arXiv preprint supporting NDS data linking lead them to the data underlying the analyses. They use NDS data transfer services to migrate previous detection data as well as simulation data held at the Blue Waters supercomputing system, containing previously unpublished neutrino emission predictions, to DataScope, a specialized computing platform to compare observations with theoretical models. From this analysis, a crucial insight suggests a new class of stellar object. Using NDS transfer tools, they pull together the LIGO data, corresponding IceCube detections, image cutouts from LSST, and analyses of simulation data into their private space in an NDS repository. NDS metadata generation tools help them organize a new collection. Soon, a paper is submitted to a journal, including identifiers for the new data collection. Once the paper is accepted, the NDS data collection is sent to a campus archive for longer-term curated management. With the new publication, readers have direct access to the underlying data, enabling them to verify and extend the results. Results and data are further available to educators, who bring the discovery to a broad audience by updating astronomy e-textbooks.