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

  • S. E. Tremblay (a1) (a2), S. M. Ord (a1) (a2), N. D. R. Bhat (a1) (a2), S. J. Tingay (a1) (a2), B. Crosse (a1), D. Pallot (a1), S. I. Oronsaye (a1) (a2), G. Bernardi (a3) (a4) (a5), J. D. Bowman (a6), F. Briggs (a7), R. J. Cappallo (a8), B. E. Corey (a8), A. A. Deshpande (a9), D. Emrich (a1), R. Goeke (a10), L. J. Greenhill (a5), B. J. Hazelton (a11), M. Johnston-Hollitt (a12), D. L. Kaplan (a13), J. C. Kasper (a5) (a14), E. Kratzenberg (a8), C. J. Lonsdale (a8), M. J. Lynch (a1), S. R. McWhirter (a8), D. A. Mitchell (a2) (a15), M. F. Morales (a11), E. Morgan (a10), D. Oberoi (a16), T. Prabu (a9), A. E. E. Rogers (a8), A. Roshi (a17), N. Udaya Shankar (a9), K. S. Srivani (a9), R. Subrahmanyan (a2) (a9), M. Waterson (a1) (a7) (a18), R. B. Wayth (a1) (a2), R. L. Webster (a2) (a19), A. R. Whitney (a8), A. Williams (a1) and C. L. Williams (a10)...
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.

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References
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Archibald, A. M., Kondratiev, V. I., Hessels, J. W. T., & Stinebring, D. R. 2014, ApJL, 790, L22
Bhat, N. D. R., Cordes, J. M., Camilo, F., Nice, D. J., & Lorimer, D. R. 2004, ApJ, 605, 759
Bhat, N. D. R., et al. 2007, ApJ, 665, 618
Bhat, N. D. R., et al. 2014, ApJL, 791, L32
Bowman, J. D., et al. 2013, PASA, 30, 31
Burke-Spolaor, S., et al. 2011, MNRAS, 416, 2465
Cordes, J. M., & Lazio, T. J. W. 2002, arXiv: astro-ph/0207156
Demorest, P. B. 2011, MNRAS, 416, 2821
Dewdney, P., et al. 2013, SKA1 System Baseline Design, http://www.skatelescope.org/publications/
Dowell, J., et al. 2013, ApJL, 775, L28
Ellingson, S. W., et al. 2013, ApJ, 768, 136
Hankins, T. H., Kern, J. S., Weatherall, J. C., & Eilek, J. A. 2003, Nature, 422, 141
Hewish, A., Bell, S. J., Pilkington, J. D. H., Scott, P. F., & Collins, R. A. 1968, Nature, 217, 709
Keane, E. F., Kramer, M., Lyne, A. G., Stappers, B. W., & McLaughlin, M. A. 2011, MNRAS, 415, 3065
Lonsdale, C. J., et al. 2009, IEEEP, 97, 1497
Lorimer, D. R., Bailes, M., McLaughlin, M. A., Narkevic, D. J., & Crawford, F. 2007, Science, 318, 777
Manchester, R. N., Hobbs, G. B., Teoh, A., & Hobbs, M. 2005, AJ, 129, 1993
Manchester, R. N., et al. 2013, PASA, 30, 17
McKinley, B., et al. 2013, AJ, 145, 23
McLaughlin, M. A., et al. 2006, Nature, 439, 817
Oberoi, D., et al. 2011, ApJL, 728, L27
Oberoi, D., et al. 2014, arXiv: 1403.6250
Ord, S. M., et al. 2015, PASA, accepted
Prabu, T., et al. 2014, ExA, http://arxiv.org/abs/1502.05015
Spitler, L. G., et al. 2014, arXiv: 1404.2934
Stovall, K., et al. 2014, ApJ, 791, 67
Taylor, G. B., et al. 2012, JAI, 1, 50 004
Taylor, J. H., & Manchester, R. N. 1977, ARA&A, 15, 19
Thompson, A. R., Moran, J. M., & Swenson, G. W. 2007, in Interferometry and Synthesis in Radio Astronomy, ed. Thompson, A. R., Moran, J. M., & Swenson, G. W. (New York: John Wiley & Sons).
Thornton, D., et al. 2013, Science, 341, 53
Tingay, S. J., et al. 2013a, PASA, 30, 7
Tingay, S. J., et al. 2013b, AJ, 146, 103
Tremblay, S. E., et al. 2015, in prep.
Trott, C. M., Tingay, S. J., & Wayth, R. B. 2013, ApJL, 776, L16
van Haarlem, M. P., et al. 2013, A&A, 556, A2
van Straten, W., & Bailes, M. 2011, PASA, 28, 1
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