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MWA Tied-Array Processing I: Calibration and Beamformation

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arxiv 1905.01826 v1 pith:QESBQ2GF submitted 2019-05-06 astro-ph.IM

S. M. Ord , S. E. Tremblay , S. J. McSweeney , N. D. R. Bhat , C. Sobey , D. A. Mitchell , P. J. Hancock , F. Kirsten This is my paper · ORCID
classification astro-ph.IM
keywords arrayantennabeammurchisontelescopetied-arrayalgorithmsaustralia
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The Murchison Widefield Array is a low-frequency Square Kilometre Array precursor located at the Murchison Radio-astronomy Observatory in Western Australia. Primarily designed as an imaging telescope, but with a flexible signal path, the capabilities of this telescope have recently been extended to include off-line incoherent and tied-array beam formation using recorded antenna voltages. This has provided the capability for high-time and frequency resolution observations, including a pulsar science program. This paper describes the algorithms and pipeline that we have developed to form the tied array beam products from the summation of calibrated signals of the antenna elements, and presents example polarimetric profiles for PSRs J0437-4715 and J1900-2600 at 185 MHz.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The Southern-sky MWA Rapid Two-metre (SMART) pulsar survey--IV. Survey update and an atlas of 205 non-recycled southern pulsars

    astro-ph.HE 2026-07 accept novelty 6.0 of 10

    Atlas of 205 non-recycled southern pulsars at 140–170 MHz from MWA SMART data, with profiles, DMs, RMs, fluxes and public data products for SKA-Low.

  2. The frequency-dependent behaviour of subpulse drifting: I. Carousel geometry and emission heights of PSR B0031-07

    astro-ph.HE 2019-08 conditional novelty 6.0 of 10

    The three drift modes of B0031-07 are matched by one carousel rotation period with 15, 14, and 13 sparks, and aberration plus retardation yields emission-height differences below about 2000 kilometers.

  3. The emission and scintillation properties of RRAT J2325-0530 at 154 MHz and 1.4 GHz

    astro-ph.HE 2019-08 conditional novelty 6.0 of 10

    Simultaneous 154 MHz and 1.4 GHz observations of RRAT J2325-0530 provide its first polarimetric profile, a mean spectral index of -2.2±0.1, and first RRAT scintillation parameters, though the latter are lower limits w...

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