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Asymmetric distribution of data products from WALLABY, an SKA precursor neutral hydrogen survey by Parra-Royon, Manuel; Shen, Austin; Reynolds, Tristan; Venkataraman, Parthasarathy; Mendoza, María Angeles; Sánchez-Exposito, Susana; Garrido, Julian; Kitaeff, Slava; Verdes-Montenegro, Lourdes is a scholarly article available to read on EtoBox.

What is Asymmetric distribution of data products from WALLABY, an SKA precursor neutral hydrogen survey about?

The Widefield ASKAP L-band Legacy All-sky Blind surveY (WALLABY) is a neutral hydrogen survey (HI) that is running on the Australian SKA Pathfinder (ASKAP), a precursor telescope for the Square Kilometre Array (SKA). The goal of WALLABY is to use ASKAP's powerful wide-field phased array feed technology to observe three quarters of the entire sky at the 21 cm neutral hydrogen line with an angular resolution of 30 arcseconds. Post-processing activities at the Australian SKA Regional Centre (AusSRC), Canadian Initiative for Radio Astronomy Data Analysis (CIRADA) and Spanish SKA Regional Centre prototype (SPSRC) will then produce publicly available advanced data products in the form of source catalogues, kinematic models and image cutouts, respectively. These advanced data products will be generated locally at each site and distributed across the network. Over the course of the full survey we expect to replicate data up to 10 MB per source detection, which could imply an ingestion of tens of GB to be consolidated in the other locations near real time. Here, we explore the use of an asymmetric database replication model and strategy, using PostgreSQL as the engine and Bucardo as the asy

Author

Parra-Royon, Manuel; Shen, Austin; Reynolds, Tristan; Venkataraman, Parthasarathy; Mendoza, María Angeles; Sánchez-Exposito, Susana; Garrido, Julian; Kitaeff, Slava; Verdes-Montenegro, Lourdes

Published

2023

Language

EN