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First Real-Time e-VLBI Fringes with the SFXC Software Correlator

Submitter: Mark Kettenis
Description: On August 25 we obtained our first real-time e-VLBI fringes using the SFXC software correlator. Data from six telescopes (five in Europe, and the 26m telescope at Hartebeesthoek in South Africa) were streamed to Dwingeloo at 512 Mbit/s per telescope and correlated on our 16-node cluster. Fringes were obtained on all baselines (pairs of Telescopes), indicating that the correlator indeed functions correctly (and the observed source was detected). The correlation proved to be robust with respect to data outages as well; even if the data transfer from one of the telescopes temporarily stopped correlation would continue.

Work to improve the network connectivity of the cluster is underway. The cluster itself will be extended as well. So in the near future we will be able to correlate data rates of 1Gb/s and higher.

Research leading to these results has received funding from the European Union's Seventh Framework Programme (FP7/2007‑ 2013) under grant agreement No. RI-261525 NEXPReS.
Copyright: JIVE
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