MWA tied-array processing I: Calibration and beamformation
Journal article, 2019
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.
interferometric
PSR J1900-2600)
techniques
pulsars
instrumentation
general
interferometers
pulsars
individual (PSR J0437-4715
Author
S. M. Ord
ICRAR
Commonwealth Scientific and Industrial Research Organisation (CSIRO)
S. E. Tremblay
ICRAR
Curtin University
S. J. McSweeney
ICRAR
Curtin University
N. D. R. Bhat
Curtin University
ICRAR
C. Sobey
ICRAR
Commonwealth Scientific and Industrial Research Organisation (CSIRO)
D. A. Mitchell
Curtin University
Commonwealth Scientific and Industrial Research Organisation (CSIRO)
P. J. Hancock
Curtin University
ICRAR
Franz Kirsten
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics, Galactic Astrophysics
Publications Astronomical Society of Australia
1323-3580 (ISSN) 1448-6083 (eISSN)
Vol. 36 e030Subject Categories
Astronomy, Astrophysics and Cosmology
DOI
10.1017/pasa.2019.17