Abstract

In the era of multi-messenger astronomy it has become paramount to verify gravitational waves (GWs) discoveries with their electromagnetic (EM) optical counterparts in near real-time. With these goals in mind, we have developed the Dark Energy Camera (DECam) analysis pipeline that sifts through large amounts of data and tries to identify interesting optical candidates. The pipeline is setup to run nightly at NERSC supercomputers and compares current sky data against the historical data collected from the Victor Blanco telescope+ DECam imager archived at NOAO or at NERSC, the latter as part of the DECam Legacy Survey. Depending on the region of sky being analyzed, images may be needed to be downloaded onto the NERSC shared filesystem on demand from NOAO. This access pattern can result in requesting the same input datasets repeatedly, increasing the traffic on NOAO's servers. In order to …

Date

September 5, 2025

Authors

Karan Vahi, D Goldstein, G Papadimitriou, P Nugent, E Deelman

Journal

Astronomical Data Analysis Software and Systems XXIX

Volume

527

Pages

631