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 e030

Subject Categories

Astronomy, Astrophysics and Cosmology

DOI

10.1017/pasa.2019.17

More information

Latest update

5/21/2021