The SFXC software correlator for very long baseline interferometry: algorithms and implementation
journal contribution
posted on 2023-05-18, 08:33authored byKeimpema, A, Kettenis, MM, Pogrebenko, SV, Campbell, RM, Cimo, G, Duev, DA, Eldering, B, Kruithof, N, van Langevelde, HJ, Marchal, D, Molera Calves, G, Ozdemir, H, Paragi, Z, Pidopryhora, Y, Szomoru, A, Yang, J
In this paper a description is given of the SFXC software correlator, developed and maintained at the Joint Institute for VLBI in Europe (JIVE). The software is designed to run on generic Linux-based computing clusters. The correlation algorithm is explained in detail, as are some of the novel modes that software correlation has enabled, such as wide-field VLBI imaging through the use of multiple phase centres and pulsar gating and binning. This is followed by an overview of the software architecture. Finally, the performance of the correlator as a function of number of CPU cores, telescopes and spectral channels is shown.
History
Publication title
Experimental Astronomy
Volume
39
Pagination
259-279
ISSN
0922-6435
Department/School
School of Natural Sciences
Publisher
Kluwer Academic Publ
Place of publication
Van Godewijckstraat 30, Dordrecht, Netherlands, 3311 Gz