Search Results - "polarimetry"

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    Improving the Murchison Widefield Array tile model for polarimetry by Sutinjo, Adrian, Padhi, Shantanu, Wayth, Randall, Hall, Peter, Tingay, Steven, O’Sullivan, J., Lenc, E.

    Published 2014
    “…This paper summarizes the progress to date in improving the Murchison Widefield Array’s (MWA) “tile” model for polarimetry. A simple model that accounts for inter-element mutual coupling is presented which explains the false polarization leakage in Stokes Q (“false Q”) seen when the array is scanned away from zenith in the principal planes. …”
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    The Challenges of Low-Frequency Radio Polarimetry: Lessons from the Murchison Widefield Array by Lenc, E., Anderson, C., Barry, N., Bowman, J., Cairns, I., Farnes, J., Gaensler, B., Heald, G., Johnston-Hollitt, M., Kaplan, D., Lynch, C., McCauley, P., Mitchell, D., Morgan, John, Morales, M., Murphy, T., Offringa, A., Ord, S., Pindor, B., Riseley, C., Sadler, E., Sobey, Charlotte, Sokolowski, Marcin, Sullivan, I., O Sullivan, S., Sun, X., Tremblay, S., Trott, Cathryn, Wayth, Randall

    Published 2017
    “…We present techniques developed to calibrate and correct Murchison Widefield Array low-frequency (72–300 MHz) radio observations for polarimetry. The extremely wide field-of-view, excellent instantaneous (u, v)-coverage and sensitivity to degree-scale structure that the Murchison Widefield Array provides enable instrumental calibration, removal of instrumental artefacts, and correction for ionospheric Faraday rotation through imaging techniques. …”
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    Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky by Burke-Spolaor, S., Ekers, Ronald, Massardi, M., Murphy, T., Partridge, B., Ricci, R., Sadler, E.

    Published 2009
    “…We present the wide-field imaging and polarimetry at ? = 20 GHz of seven most extended, bright (Stotal = 0.50 Jy), high-frequency selected radio sources in the southern sky with declinations d < -30°. …”
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    Compact symmetric objects and supermassive binary black holes in the VLBA Imaging and Polarimetry Survey by Tremblay, Steven, Taylor, G., Ortiz, A., Tremblay, C., Helmboldt, J., Romani, R.

    Published 2016
    “…We present multifrequency Very Long Baseline Array (VLBA) follow-up observations of VLBA Imaging and Polarimetry Survey sources identified as likely compact symmetric objects (CSOs) or supermassive binary black holes (SBBHs). …”
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