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The Australia Telescope National Facility Colloquium
15:00-16:00 Wed 13 Nov 2013

Ian Heywood

(CASS)

Ian Heywood Colloquium: Down the rabbit hole with an 8.4 GHz JVLA observation

The high resolution afforded by radio interferometer observations offers a tried and tested method for identifying the counterparts of bright sub-mm sources at other wavebands. X-band (8.4 GHz) JVLA observations were performed to investigate the nature of strong 870-micron LABOCA detections in the William Herschel Deep Field (WHDF), with a particular interest in two X-ray absorbed quasars.

A particular feature of the WHDF at these radio wavelengths required the application of some non-standard calibration techniques. For the curious (or possibly masochistic) interferometry enthusiast these observations offer substantial food for thought.

I will cover the astrophysical outcome of the project, and with reference to the data and parallel simulations discuss the following burning issues: (i) why didn't my CASA recipe work? (ii) how can I put my phase calibrator in the worst possible place and live to tell the tale? (iii) can we really trust the outcome of interferometric image stacking experiments?


Contact

Alex Hill
alex.hill@csiro.au

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