Mid-frequency aperture arrays: The future of radio astronomy

I. van Bemmel, A. van Ardenne, J. G. bij de Vaate, A. J. Faulkner, R. Morganti

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

1 Citation (Scopus)


Aperture array (AA) technology is at the forefront of new developments and discoveries in radio astronomy. Currently LOFAR is successfully demonstrating the capabilities of dense and sparse AA's at low frequencies. For the mid-frequencies, from 450 to 1450MHz, AA's still have to prove their scientific value with respect to the existing dish technology. Their large field-of-view and high flexibility puts them in an excellent position to do so. The Aperture Array Verification Program is dedicated to demonstrate the feasibility of AA's for science in general and SKA in particular. For the mid-frequency range this has lead to the development of EMBRACE, which has already demonstrated the enormous flexibility of AA systems by observing HI and a pulsar simultaneously. It also serves as a testbed to demonstrate the technological reliability and stability of AA's. The next step will put AA technology at a level where it can be used for cutting-edge science. In this paper we discuss the developments to move AA technology from an engineering activity to a fully science capable instrument. We present current results from EMBRACE, ongoing tests of the system, and plans for EMMA, the next step in mid-frequency AA technology.
Original languageEnglish
Title of host publicationProceedings of the meeting "Resolving The Sky - Radio Interferometry: Past, Present and Future". April 17-20,2012. Manchester, UK. Published online at http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=163, id.37
Number of pages1
Publication statusPublished - 2012
EventResolving The Sky - Radio Interferometry: Past, Present and Future - Manchester, United Kingdom
Duration: 17-Apr-201220-Apr-2012


ConferenceResolving The Sky - Radio Interferometry: Past, Present and Future
Country/TerritoryUnited Kingdom

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