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Application of 'CLEAN' in the Power Spectral Analysis of Non-Uniformly Sampled Pulsar Timing Data


Deshpande, AA and D'Alessandro, F and McCulloch, PM, Application of 'CLEAN' in the Power Spectral Analysis of Non-Uniformly Sampled Pulsar Timing Data, Journal of Astrophysics and Astronomy, 17, (1-2) pp. 7-16. ISSN 0250-6335 (1996) [Refereed Article]

DOI: doi:10.1007/BF02709341


Spectral analysis of the residual pulse-arrival times of pulsars is a useful tool in understanding the nature of the underlying processes that may be responsible for the timing noise observed from pulsars. Power spectra of pulsar timing residuals may be described by one or a combination of power-laws. As these spectra are expected to be very steep, it is important to ensure a high dynamic range in the estimation of the spectrum. This is difficult in practice since one is, in general, dealing with timing measurements made at unevenly placed epochs. In this paper, we present a technique based on 'CLEAN' to obtain high dynamic range spectra from unevenly sampled data. We compare the performance of this technique with other techniques including some that were used earlier for estimation of power spectra of pulsar timing residuals.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:D'Alessandro, F (Dr Franco D'Alessandro)
UTAS Author:McCulloch, PM (Professor Peter McCulloch)
ID Code:7221
Year Published:1996
Web of Science® Times Cited:9
Deposited By:Physics
Deposited On:1996-08-01
Last Modified:2011-08-16

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