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The Low-frequency Characteristics of PSR J0437-4715 Observed with the Murchison Wide-field Array

Bhat, N.D.R.; Ord, S M; Tremblay, S.E.; Tingay, S. J.; Deshpande, Avinash; Van Straten, William; Oronsaye, S. I.; Bernardi, Gianni; Bowman, J D; Briggs, Franklin; Cappallo, R. J; Waterson, Mark

Description

We report on the detection of the millisecond pulsar PSR J0437-4715 with the Murchison Wide-field Array (MWA) at a frequency of 192 MHz. Our observations show rapid modulations of pulse intensity in time and frequency that arise from diffractive scintillation effects in the interstellar medium (ISM), as well as prominent drifts of intensity maxima in the time-frequency plane that arise from refractive effects. Our analysis suggests that the scattering screen is located at a distance of ~80-120...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
URI: http://hdl.handle.net/1885/204901
Source: Astrophysical Journal, The
DOI: 10.1088/2041-8205/791/2/L32
Access Rights: Open Access

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