The High Time and Frequency Resolution Capabilities of the Murchison Widefield Array

Tremblay, S.; Ord, Stephen; Bhat, N.; Tingay, Steven; Crosse, B.; Pallot, D.; Oronsaye, S.; Bernardi, G.; Bowman, J.; Briggs, F.; Cappallo, R.; Corey, B.; Deshpande, A.; Emrich, D.; Goeke, R.; Greenhill, L.; Hazelton, B.; Johnston-Hollitt, M.; Kaplan, D.; Kasper, J.; Kratzenberg, E.; Lonsdale, C.; Lynch, Mervyn; McWhirter, S.; Mitchell, D.; Morales, M.; Morgan, E.; Oberoi, D.; Prabu, T.; Rogers, A.; Roshi, A.; Shankar, N.; Srivani, K.; Subrahmanyan, R.; Waterson, M.; Wayth, Randall; Webster, R.; Whitney, A.; Williams, A.; Williams, C.

doi:10.1017/pasa.2015.6

Access Status

Open access via publisher

Authors

Tremblay, S.

Ord, Stephen

Bhat, N.

Tingay, Steven

Crosse, B.

Pallot, D.

Oronsaye, S.

Bernardi, G.

Bowman, J.

Briggs, F.

Cappallo, R.

Corey, B.

Deshpande, A.

Emrich, D.

Goeke, R.

Greenhill, L.

Hazelton, B.

Johnston-Hollitt, M.

Kaplan, D.

Kasper, J.

Kratzenberg, E.

Lonsdale, C.

Lynch, Mervyn

McWhirter, S.

Mitchell, D.

Morales, M.

Morgan, E.

Oberoi, D.

Prabu, T.

Rogers, A.

Roshi, A.

Shankar, N.

Srivani, K.

Subrahmanyan, R.

Waterson, M.

Wayth, Randall

Webster, R.

Whitney, A.

Williams, A.

Williams, C.

Date

2015

Type

Journal Article

Metadata

Show full item record

Citation

Tremblay, S. and Ord, S. and Bhat, N. and Tingay, S. and Crosse, B. and Pallot, D. and Oronsaye, S. et al. 2015. The High Time and Frequency Resolution Capabilities of the Murchison Widefield Array. Publications of the Astronomical Society of Australia. 32: Article ID e005.

Source Title

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA

DOI

10.1017/pasa.2015.6

ISSN

1323-3580

School

Curtin Institute of Radio Astronomy (Engineering)

URI

http://hdl.handle.net/20.500.11937/29784

Collection

Curtin Research Publications

Abstract

The science cases for incorporating high time resolution capabilities into modern radio telescopes are as numerous as they are compelling. Science targets range from exotic sources such as pulsars, to our Sun, to recently detected possible extragalactic bursts of radio emission, the so-called fast radio bursts (FRBs). Originally conceived purely as an imaging telescope, the initial design of the Murchison Widefield Array (MWA) did not include the ability to access high time and frequency resolution voltage data. However, the flexibility of the MWA’s software correlator allowed an off-the-shelf solution for adding this capability. This paper describes the system that records the 100 μs and 10 kHz resolution voltage data from the MWA. Example science applications, where this capability is critical, are presented, as well as accompanying commissioning results from this mode to demonstrate verification.