Journal
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA
Volume 27, Issue 3, Pages 272-282Publisher
CSIRO PUBLISHING
DOI: 10.1071/AS09082
Keywords
gravitational waves; ISM: structure; scattering; surveys; techniques: radar astronomy
Categories
Funding
- National Aeronautics and Aerospace Administration
- STFC [ST/G002487/1, ST/F002874/1, ST/G003084/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G003084/1, ST/F002874/1, ST/G002487/1] Funding Source: researchfish
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We are developing a purely commensal survey experiment for fast (<5 s) transient radio sources. Short-timescale transients are associated with the most energetic and brightest single events in the Universe. Our objective is to cover the enormous volume of transients parameter space made available by ASKAP, with an unprecedented combination of sensitivity and field of view. Fast timescale transients open new vistas on the physics of high brightness temperature emission, extreme states of matter and the physics of strong gravitational fields. In addition, the detection of extragalactic objects affords us an entirely new and extremely sensitive probe on the huge reservoir of baryons present in the IGM. We outline here our approach to the considerable challenge involved in detecting fast transients, particularly the development of hardware fast enough to dedisperse and search the ASKAP data stream at or near real-time rates. Through CRAFT, ASKAP will provide the testbed of many of the key technologies and survey modes proposed for high time resolution science with the SKA.
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