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

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

doi:10.1017/pasa.2015.6

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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

61 Citations (Scopus)

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.

Original language	English
Article number	e005
Journal	Publications of the Astronomical Society of Australia
Volume	32
DOIs	https://doi.org/10.1017/pasa.2015.6
Publication status	Published - 16 Feb 2015

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Tremblay, S. E., Ord, S. M., Bhat, N. D. R., Tingay, S. J., Crosse, B., Pallot, D., Oronsaye, S. I., Bernardi, G., Bowman, J. D., Briggs, F., Cappallo, R. J., Corey, B. E., Deshpande, A. A., Emrich, D., Goeke, R., Greenhill, L. J., Hazelton, B. J., Johnston-Hollitt, M., Kaplan, D. L., ... Williams, C. L. (2015). The High Time and Frequency Resolution Capabilities of the Murchison Widefield Array. Publications of the Astronomical Society of Australia, 32, Article e005. https://doi.org/10.1017/pasa.2015.6

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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.",

keywords = "Sun: radio radiation, instrumentation: interferometers, pulsars: general, radio continuum: general, techniques: radar astronomy",

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

note = "Publisher Copyright: {\textcopyright} 2015 Astronomical Society of Australia.",

year = "2015",

month = feb,

day = "16",

doi = "10.1017/pasa.2015.6",

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Tremblay, SE, Ord, SM, Bhat, NDR, Tingay, SJ, Crosse, B, Pallot, D, Oronsaye, SI, Bernardi, G, Bowman, JD, Briggs, F, Cappallo, RJ, Corey, BE, Deshpande, AA, Emrich, D, Goeke, R, Greenhill, LJ, Hazelton, BJ, Johnston-Hollitt, M, Kaplan, DL, Kasper, JC, Kratzenberg, E, Lonsdale, CJ, Lynch, MJ, McWhirter, SR, Mitchell, DA, Morales, MF, Morgan, E, Oberoi, D, Prabu, T, Rogers, AEE, Roshi, A, Udaya Shankar, N, Srivani, KS, Subrahmanyan, R, Waterson, M, Wayth, RB, Webster, RL, Whitney, AR, Williams, A & Williams, CL 2015, 'The High Time and Frequency Resolution Capabilities of the Murchison Widefield Array', Publications of the Astronomical Society of Australia, vol. 32, e005. https://doi.org/10.1017/pasa.2015.6

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AU - Tremblay, S. E.

AU - Ord, S. M.

AU - Bhat, N. D.R.

AU - Tingay, S. J.

AU - Crosse, B.

AU - Pallot, D.

AU - Oronsaye, S. I.

AU - Bernardi, G.

AU - Bowman, J. D.

AU - Briggs, F.

AU - Cappallo, R. J.

AU - Corey, B. E.

AU - Deshpande, A. A.

AU - Emrich, D.

AU - Goeke, R.

AU - Greenhill, L. J.

AU - Hazelton, B. J.

AU - Johnston-Hollitt, M.

AU - Kaplan, D. L.

AU - Kasper, J. C.

AU - Kratzenberg, E.

AU - Lonsdale, C. J.

AU - Lynch, M. J.

AU - McWhirter, S. R.

AU - Mitchell, D. A.

AU - Morales, M. F.

AU - Morgan, E.

AU - Oberoi, D.

AU - Prabu, T.

AU - Rogers, A. E.E.

AU - Roshi, A.

AU - Udaya Shankar, N.

AU - Srivani, K. S.

AU - Subrahmanyan, R.

AU - Waterson, M.

AU - Wayth, R. B.

AU - Webster, R. L.

AU - Whitney, A. R.

AU - Williams, A.

AU - Williams, C. L.

PY - 2015/2/16

Y1 - 2015/2/16

N2 - 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.

AB - 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.

KW - Sun: radio radiation

KW - instrumentation: interferometers

KW - pulsars: general

KW - radio continuum: general

KW - techniques: radar astronomy

UR - http://www.scopus.com/inward/record.url?scp=84939168113&partnerID=8YFLogxK

U2 - 10.1017/pasa.2015.6

DO - 10.1017/pasa.2015.6

M3 - Article

SN - 1323-3580

VL - 32

JO - Publications of the Astronomical Society of Australia

JF - Publications of the Astronomical Society of Australia

M1 - e005

ER -

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

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