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| Paper: |
Spotting Radio Transients with the Help of GPUs |
| Volume: |
461, Astronomical Data Analysis Software and Systems XXI |
| Page: |
37 |
| Authors: |
Barsdell, B. R.; Bailes, M.; Barnes, D. G.; Fluke, C. J. |
| Abstract: |
Exploration of the time-domain radio sky has huge potential for advancing our
knowledge of the dynamic universe. Past surveys have discovered large numbers
of pulsars, rotating radio transients and other transient radio phenomena;
however, they have typically relied upon off-line processing to cope with the
high data and processing rate. This paradigm rules out the possibility of
obtaining high-resolution base-band dumps of significant events or of
performing immediate follow-up observations, limiting analysis power to what
can be gleaned from detection data alone. To overcome this limitation,
real-time processing and detection of transient radio events is required. By
exploiting the significant computing power of modern graphics processing units
(GPUs), we are developing a transient-detection pipeline that runs in
real-time on data from the Parkes radio telescope. In this paper we discuss
the algorithms used in our pipeline, the details of their implementation on
the GPU and the challenges posed by the presence of radio frequency
interference. |
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